diff --git a/libs/ui/KisImportExportFilter.cpp b/libs/ui/KisImportExportFilter.cpp
index 2799373621..65eaf8dedc 100644
--- a/libs/ui/KisImportExportFilter.cpp
+++ b/libs/ui/KisImportExportFilter.cpp
@@ -1,324 +1,344 @@
 /* This file is part of the KDE libraries
    Copyright (C) 2001 Werner Trobin <trobin@kde.org>
                  2002 Werner Trobin <trobin@kde.org>
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Library General Public
 License as published by the Free Software Foundation; either
 version 2 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public License
 along with this library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 Boston, MA 02110-1301, USA.
 */
 
 #include "KisImportExportFilter.h"
 
 #include <QFile>
 #include <QFileInfo>
 #include <kis_debug.h>
 #include <QStack>
 #include "KisImportExportManager.h"
 #include <KoColorSpaceRegistry.h>
 #include <KoColorModelStandardIds.h>
 #include <KisExportCheckBase.h>
 #include <KisExportCheckRegistry.h>
 #include "KoUpdater.h"
 #include <klocalizedstring.h>
 #include "kis_config.h"
+#include <KoStore.h>
+#include <KisDocument.h>
 
 const QString KisImportExportFilter::ImageContainsTransparencyTag = "ImageContainsTransparency";
 const QString KisImportExportFilter::ColorModelIDTag = "ColorModelID";
 const QString KisImportExportFilter::ColorDepthIDTag = "ColorDepthID";
 const QString KisImportExportFilter::sRGBTag = "sRGB";
 
 class Q_DECL_HIDDEN KisImportExportFilter::Private
 {
 public:
     QPointer<KoUpdater> updater;
     QByteArray mime;
     QString filename;
     QString realFilename;
     bool batchmode;
 
     QMap<QString, KisExportCheckBase*> capabilities;
 
     Private()
         : updater(0), mime("")
         , batchmode(false)
     {}
 
     ~Private()
     {
         qDeleteAll(capabilities);
     }
 
 };
 
 
 KisImportExportFilter::KisImportExportFilter(QObject *parent)
     : QObject(parent)
     , d(new Private)
 {
 }
 
 KisImportExportFilter::~KisImportExportFilter()
 {
     if (d->updater) {
         d->updater->setProgress(100);
     }
     delete d;
 }
 
 QString KisImportExportFilter::filename() const
 {
     return d->filename;
 }
 
 QString KisImportExportFilter::realFilename() const
 {
     return d->realFilename;
 }
 
 bool KisImportExportFilter::batchMode() const
 {
     return d->batchmode;
 }
 
 
 void KisImportExportFilter::setBatchMode(bool batchmode)
 {
     d->batchmode = batchmode;
 }
 
 void KisImportExportFilter::setFilename(const QString &filename)
 {
     d->filename = filename;
 }
 
 void KisImportExportFilter::setRealFilename(const QString &filename)
 {
     d->realFilename = filename;
 }
 
 
 void KisImportExportFilter::setMimeType(const QString &mime)
 {
     d->mime = mime.toLatin1();
 }
 
 QByteArray KisImportExportFilter::mimeType() const
 {
     return d->mime;
 }
 
 QString KisImportExportFilter::conversionStatusString(ConversionStatus status)
 {
     QString msg;
     switch (status) {
     case OK: break;
 
     case FilterCreationError:
         msg = i18n("Krita does not support this file format"); break;
 
     case CreationError:
         msg = i18n("Could not create the output document"); break;
 
     case FileNotFound:
         msg = i18n("File not found"); break;
 
     case StorageCreationError:
         msg = i18n("Cannot create storage"); break;
 
     case BadMimeType:
         msg = i18n("Bad MIME type"); break;
 
     case WrongFormat:
         msg = i18n("Format not recognized"); break;
 
     case NotImplemented:
         msg = i18n("Not implemented"); break;
 
     case ParsingError:
         msg = i18n("Parsing error"); break;
 
     case InvalidFormat:
         msg = i18n("Invalid file format"); break;
 
     case InternalError:
     case UsageError:
         msg = i18n("Internal error"); break;
 
     case ProgressCancelled:
         msg = i18n("Cancelled by user"); break;
 
     case BadConversionGraph:
 
         msg = i18n("Unknown file type"); break;
 
     case UnsupportedVersion:
 
         msg = i18n("Unsupported file version"); break;
 
     case UserCancelled:
 
         // intentionally we do not prompt the error message here
         break;
 
 
     default: msg = i18n("Unknown error"); break;
     }
     return msg;
 }
 
 KisPropertiesConfigurationSP KisImportExportFilter::defaultConfiguration(const QByteArray &from, const QByteArray &to) const
 {
     Q_UNUSED(from);
     Q_UNUSED(to);
     return 0;
 }
 
 KisPropertiesConfigurationSP KisImportExportFilter::lastSavedConfiguration(const QByteArray &from, const QByteArray &to) const
 {
     KisPropertiesConfigurationSP cfg = defaultConfiguration(from, to);
     const QString filterConfig = KisConfig(true).exportConfigurationXML(to);
     if (cfg && !filterConfig.isEmpty()) {
         cfg->fromXML(filterConfig, false);
     }
     return cfg;
 }
 
 KisConfigWidget *KisImportExportFilter::createConfigurationWidget(QWidget *, const QByteArray &from, const QByteArray &to) const
 {
     Q_UNUSED(from);
     Q_UNUSED(to);
     return 0;
 }
 
 QMap<QString, KisExportCheckBase *> KisImportExportFilter::exportChecks()
 {
     qDeleteAll(d->capabilities);
     initializeCapabilities();
     return d->capabilities;
 }
 
 QString KisImportExportFilter::verify(const QString &fileName) const
 {
     QFileInfo fi(fileName);
 
     if (!fi.exists()) {
         return i18n("%1 does not exit after writing. Try saving again under a different name, in another location.", fileName);
     }
 
     if (!fi.isReadable()) {
         return i18n("%1 is not readable", fileName);
     }
 
     if (fi.size() < 10)  {
         return i18n("%1 is smaller than 10 bytes, it must be corrupt. Try saving again under a different name, in another location.", fileName);
     }
 
     QFile f(fileName);
     f.open(QFile::ReadOnly);
     QByteArray ba = f.read(std::min(f.size(), (qint64)1000));
     bool found = false;
     for(int i = 0; i < ba.size(); ++i) {
         if (ba.at(i) > 0) {
             found = true;
             break;
         }
     }
 
     if (!found) {
         return i18n("%1 has only zero bytes in the first 1000 bytes, it's probably corrupt. Try saving again under a different name, in another location.", fileName);
     }
 
     return QString();
 }
 
 void KisImportExportFilter::setUpdater(QPointer<KoUpdater> updater)
 {
     d->updater = updater;
 }
 
 void KisImportExportFilter::setProgress(int value)
 {
     if (d->updater) {
         d->updater->setValue(value);
     }
 }
 
 void KisImportExportFilter::initializeCapabilities()
 {
     // XXX: Initialize everything to fully supported?
 }
 
 void KisImportExportFilter::addCapability(KisExportCheckBase *capability)
 {
     d->capabilities[capability->id()] = capability;
 }
 
 
 
 void KisImportExportFilter::addSupportedColorModels(QList<QPair<KoID, KoID> > supportedColorModels, const QString &name, KisExportCheckBase::Level level)
 {
     Q_ASSERT(level != KisExportCheckBase::SUPPORTED);
     QString layerMessage;
     QString imageMessage;
     QList<KoID> allColorModels = KoColorSpaceRegistry::instance()->colorModelsList(KoColorSpaceRegistry::AllColorSpaces);
     Q_FOREACH(const KoID &colorModelID, allColorModels) {
         QList<KoID> allColorDepths = KoColorSpaceRegistry::instance()->colorDepthList(colorModelID.id(), KoColorSpaceRegistry::AllColorSpaces);
         Q_FOREACH(const KoID &colorDepthID, allColorDepths) {
 
             KisExportCheckFactory *colorModelCheckFactory =
                     KisExportCheckRegistry::instance()->get("ColorModelCheck/" + colorModelID.id() + "/" + colorDepthID.id());
             KisExportCheckFactory *colorModelPerLayerCheckFactory =
                     KisExportCheckRegistry::instance()->get("ColorModelPerLayerCheck/" + colorModelID.id() + "/" + colorDepthID.id());
 
             if(!colorModelCheckFactory || !colorModelPerLayerCheckFactory) {
                 qWarning() << "No factory for" << colorModelID << colorDepthID;
                 continue;
             }
 
             if (supportedColorModels.contains(QPair<KoID, KoID>(colorModelID, colorDepthID))) {
                 addCapability(colorModelCheckFactory->create(KisExportCheckBase::SUPPORTED));
                 addCapability(colorModelPerLayerCheckFactory->create(KisExportCheckBase::SUPPORTED));
             }
             else {
 
 
                 if (level == KisExportCheckBase::PARTIALLY) {
                     imageMessage = i18nc("image conversion warning",
                                          "%1 cannot save images with color model <b>%2</b> and depth <b>%3</b>. The image will be converted."
                                          ,name, colorModelID.name(), colorDepthID.name());
 
                     layerMessage =
                             i18nc("image conversion warning",
                                   "%1 cannot save layers with color model <b>%2</b> and depth <b>%3</b>. The layers will be converted or skipped."
                                   ,name, colorModelID.name(), colorDepthID.name());
                 }
                 else {
                     imageMessage = i18nc("image conversion warning",
                                          "%1 cannot save images with color model <b>%2</b> and depth <b>%3</b>. The image will not be saved."
                                          ,name, colorModelID.name(), colorDepthID.name());
 
                     layerMessage =
                             i18nc("image conversion warning",
                                   "%1 cannot save layers with color model <b>%2</b> and depth <b>%3</b>. The layers will be skipped."
                                   , name, colorModelID.name(), colorDepthID.name());
                  }
 
 
 
                 addCapability(colorModelCheckFactory->create(level, imageMessage));
                 addCapability(colorModelPerLayerCheckFactory->create(level, layerMessage));
             }
         }
     }
 }
+
+QString KisImportExportFilter::verifyZiPBasedFiles(const QString &fileName, const QStringList &filesToCheck) const
+{
+    QScopedPointer<KoStore> store(KoStore::createStore(fileName, KoStore::Read, KIS_MIME_TYPE, KoStore::Zip));
+
+    if (!store || store->bad()) {
+        return i18n("Could not open the saved file %1. Please try to save again in a different location.", fileName);
+    }
+
+    Q_FOREACH(const QString &file, filesToCheck) {
+        if (!store->hasFile(file)) {
+            return i18n("File %1 is missing in %2 and is broken. Please try to save again in a different location.", file, fileName);
+        }
+    }
+
+    return QString();
+
+}
diff --git a/libs/ui/KisImportExportFilter.h b/libs/ui/KisImportExportFilter.h
index a30ec2b3a2..190b803617 100644
--- a/libs/ui/KisImportExportFilter.h
+++ b/libs/ui/KisImportExportFilter.h
@@ -1,188 +1,190 @@
 /* This file is part of the Calligra libraries
    Copyright (C) 2001 Werner Trobin <trobin@kde.org>
                  2002 Werner Trobin <trobin@kde.org>
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Library General Public
 License as published by the Free Software Foundation; either
 version 2 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public License
 along with this library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 Boston, MA 02110-1301, USA.
 */
 
 #ifndef KIS_IMPORT_EXPORT_FILTER_H
 #define KIS_IMPORT_EXPORT_FILTER_H
 
 #include "KisImageBuilderResult.h"
 
 #include <QObject>
 #include <QIODevice>
 #include <QMap>
 #include <QPointer>
 #include <QString>
 #include <QPair>
 #include <QList>
 #include <KoID.h>
 #include <QSharedPointer>
 #include <kis_properties_configuration.h>
 #include <kis_types.h>
 #include <KisExportCheckBase.h>
 
 class KoUpdater;
 class KisDocument;
 class KisConfigWidget;
 
 #include "kritaui_export.h"
 #include "KisImportExportErrorCode.h"
 
 /**
  * @brief The base class for import and export filters.
  *
  * Derive your filter class from this base class and implement
  * the @ref convert() method. Don't forget to specify the Q_OBJECT
  * macro in your class even if you don't use signals or slots.
  * This is needed as filters are created on the fly.
  *
  * @note Take care: The m_chain pointer is invalid while the constructor
  * runs due to the implementation -- @em don't use it in the constructor.
  * After the constructor, when running the @ref convert() method it's
  * guaranteed to be valid, so no need to check against 0.
  *
  * @note If the code is compiled in debug mode, setting CALLIGRA_DEBUG_FILTERS
  * environment variable to any value disables deletion of temporary files while
  * importing/exporting. This is useful for testing purposes.
  *
  * @author Werner Trobin <trobin@kde.org>
  * @todo the class has no constructor and therefore cannot initialize its private class
  */
 class KRITAUI_EXPORT KisImportExportFilter : public QObject
 {
     Q_OBJECT
 public:
     static const QString ImageContainsTransparencyTag;
     static const QString ColorModelIDTag;
     static const QString ColorDepthIDTag;
     static const QString sRGBTag;
 public:
     /**
      * This enum is used to signal the return state of your filter.
      * Return OK in @ref convert() in case everything worked as expected.
      * Feel free to add some more error conditions @em before the last item
      * if it's needed.
      */
     enum ConversionStatus { OK,
                             UsageError,
                             CreationError,
                             FileNotFound,
                             StorageCreationError,
                             BadMimeType,
                             BadConversionGraph,
                             WrongFormat,
                             NotImplemented,
                             ParsingError,
                             InternalError,
                             UserCancelled,
                             InvalidFormat,
                             FilterCreationError,
                             ProgressCancelled,
                             UnsupportedVersion,
                             JustInCaseSomeBrokenCompilerUsesLessThanAByte = 255
                           };
 
     ~KisImportExportFilter() override;
 
     void setBatchMode(bool batchmode);
     void setFilename(const QString &filename);
     void setRealFilename(const QString &filename);
     void setMimeType(const QString &mime);
     void setUpdater(QPointer<KoUpdater> updater);
 
     /**
      * The filter chain calls this method to perform the actual conversion.
      * The passed mimetypes should be a pair of those you specified in your
      * .desktop file.
      * You @em have to implement this method to make the filter work.
      *
      * @return The error status, see the @ref #ConversionStatus enum.
      *         KisImportExportFilter::OK means that everything is alright.
      */
     virtual KisImportExportErrorCode convert(KisDocument *document, QIODevice *io, KisPropertiesConfigurationSP configuration = 0) = 0;
 
     /**
      * Get the text version of the status value
      */
     static QString conversionStatusString(ConversionStatus status);
 
     /**
      * @brief defaultConfiguration defines the default settings for the given import export filter
      * @param from The mimetype of the source file/document
      * @param to The mimetype of the destination file/document
      * @return a serializable KisPropertiesConfiguration object
      */
     virtual KisPropertiesConfigurationSP defaultConfiguration(const QByteArray& from = "", const QByteArray& to = "") const;
 
     /**
      * @brief lastSavedConfiguration return the last saved configuration for this filter
      * @param from The mimetype of the source file/document
      * @param to The mimetype of the destination file/document
      * @return a serializable KisPropertiesConfiguration object
      */
     KisPropertiesConfigurationSP lastSavedConfiguration(const QByteArray &from = "", const QByteArray &to = "") const;
 
     /**
      * @brief createConfigurationWidget creates a widget that can be used to define the settings for a given import/export filter
      * @param parent the owner of the widget; the caller is responsible for deleting
      * @param from The mimetype of the source file/document
      * @param to The mimetype of the destination file/document
      *
      * @return the widget
      */
     virtual KisConfigWidget *createConfigurationWidget(QWidget *parent, const QByteArray& from = "", const QByteArray& to = "") const;
 
     /**
      * @brief generate and return the list of capabilities of this export filter. The list
      * @return returns the list of capabilities of this export filter
      */
     virtual QMap<QString, KisExportCheckBase*> exportChecks();
 
     /// Override and return false for the filters that use a library that cannot handle file handles, only file names.
     virtual bool supportsIO() const { return true; }
 
     /// Verify whether the given file is correct and readable
     virtual QString verify(const QString &fileName) const;
 
 protected:
     /**
      * This is the constructor your filter has to call, obviously.
      */
     KisImportExportFilter(QObject *parent = 0);
 
     QString filename() const;
     QString realFilename() const;
     bool batchMode() const;
     QByteArray mimeType() const;
 
     void setProgress(int value);
     virtual void initializeCapabilities();
     void addCapability(KisExportCheckBase *capability);
     void addSupportedColorModels(QList<QPair<KoID, KoID> > supportedColorModels, const QString &name, KisExportCheckBase::Level level = KisExportCheckBase::PARTIALLY);
 
+    QString verifyZiPBasedFiles(const QString &fileName, const QStringList &filesToCheck) const;
+
 private:
 
     KisImportExportFilter(const KisImportExportFilter& rhs);
     KisImportExportFilter& operator=(const KisImportExportFilter& rhs);
 
     class Private;
     Private *const d;
 
 };
 
 #endif
diff --git a/libs/ui/KisImportExportManager.cpp b/libs/ui/KisImportExportManager.cpp
index dec3c91919..8335afaf94 100644
--- a/libs/ui/KisImportExportManager.cpp
+++ b/libs/ui/KisImportExportManager.cpp
@@ -1,696 +1,697 @@
 /*
  * Copyright (C) 2016 Boudewijn Rempt <boud@valdyas.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "KisImportExportManager.h"
 
 #include <QFile>
 #include <QLabel>
 #include <QVBoxLayout>
 #include <QList>
 #include <QApplication>
 #include <QByteArray>
 #include <QPluginLoader>
 #include <QFileInfo>
 #include <QMessageBox>
 #include <QJsonObject>
 #include <QTextBrowser>
 #include <QCheckBox>
 #include <QSaveFile>
 #include <QGroupBox>
 #include <QFuture>
 #include <QtConcurrent>
 
 #include <klocalizedstring.h>
 #include <ksqueezedtextlabel.h>
 #include <kpluginfactory.h>
 
 #include <KisUsageLogger.h>
 #include <KoFileDialog.h>
 #include <kis_icon_utils.h>
 #include <KoDialog.h>
 #include <KoProgressUpdater.h>
 #include <KoJsonTrader.h>
 #include <KisMimeDatabase.h>
 #include <kis_config_widget.h>
 #include <kis_debug.h>
 #include <KisPreExportChecker.h>
 #include <KisPart.h>
 #include "kis_config.h"
 #include "KisImportExportFilter.h"
 #include "KisDocument.h"
 #include <kis_image.h>
 #include <kis_paint_layer.h>
 #include "kis_painter.h"
 #include "kis_guides_config.h"
 #include "kis_grid_config.h"
 #include "kis_popup_button.h"
 #include <kis_iterator_ng.h>
 #include "kis_async_action_feedback.h"
 #include "KisReferenceImagesLayer.h"
 
 // static cache for import and export mimetypes
 QStringList KisImportExportManager::m_importMimeTypes;
 QStringList KisImportExportManager::m_exportMimeTypes;
 
 class Q_DECL_HIDDEN KisImportExportManager::Private
 {
 public:
     KoUpdaterPtr updater;
 
     QString cachedExportFilterMimeType;
     QSharedPointer<KisImportExportFilter> cachedExportFilter;
 };
 
 struct KisImportExportManager::ConversionResult {
     ConversionResult()
     {
     }
 
     ConversionResult(const QFuture<KisImportExportErrorCode> &futureStatus)
         : m_isAsync(true),
           m_futureStatus(futureStatus)
     {
     }
 
     ConversionResult(KisImportExportErrorCode status)
         : m_isAsync(false),
           m_status(status)
     {
     }
 
     bool isAsync() const {
         return m_isAsync;
     }
 
     QFuture<KisImportExportErrorCode> futureStatus() const {
         // if the result is not async, then it means some failure happened,
         // just return a cancelled future
         KIS_SAFE_ASSERT_RECOVER_NOOP(m_isAsync || !m_status.isOk());
 
         return m_futureStatus;
     }
 
     KisImportExportErrorCode status() const {
         return m_status;
     }
 
     void setStatus(KisImportExportErrorCode value) {
         m_status = value;
     }
 private:
     bool m_isAsync = false;
     QFuture<KisImportExportErrorCode> m_futureStatus;
     KisImportExportErrorCode m_status = ImportExportCodes::InternalError;
 };
 
 
 KisImportExportManager::KisImportExportManager(KisDocument* document)
     : m_document(document)
     , d(new Private)
 {
 }
 
 KisImportExportManager::~KisImportExportManager()
 {
     delete d;
 }
 
 KisImportExportErrorCode KisImportExportManager::importDocument(const QString& location, const QString& mimeType)
 {
     ConversionResult result = convert(Import, location, location, mimeType, false, 0, false);
     KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(!result.isAsync(), ImportExportCodes::InternalError);
 
     return result.status();
 }
 
 KisImportExportErrorCode KisImportExportManager::exportDocument(const QString& location, const QString& realLocation, const QByteArray& mimeType, bool showWarnings, KisPropertiesConfigurationSP exportConfiguration)
 {
     ConversionResult result = convert(Export, location, realLocation, mimeType, showWarnings, exportConfiguration, false);
     KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(!result.isAsync(), ImportExportCodes::InternalError);
 
     return result.status();
 }
 
 QFuture<KisImportExportErrorCode> KisImportExportManager::exportDocumentAsyc(const QString &location, const QString &realLocation, const QByteArray &mimeType,
                                                                             KisImportExportErrorCode &status, bool showWarnings, KisPropertiesConfigurationSP exportConfiguration)
 {
     ConversionResult result = convert(Export, location, realLocation, mimeType, showWarnings, exportConfiguration, true);
     KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(result.isAsync() ||
                                          !result.status().isOk(), QFuture<KisImportExportErrorCode>());
 
     status = result.status();
     return result.futureStatus();
 }
 
 // The static method to figure out to which parts of the
 // graph this mimetype has a connection to.
 QStringList KisImportExportManager::supportedMimeTypes(Direction direction)
 {
     // Find the right mimetype by the extension
     QSet<QString> mimeTypes;
     //    mimeTypes << KisDocument::nativeFormatMimeType() << "application/x-krita-paintoppreset" << "image/openraster";
 
     if (direction == KisImportExportManager::Import) {
         if (m_importMimeTypes.isEmpty()) {
             QList<QPluginLoader *>list = KoJsonTrader::instance()->query("Krita/FileFilter", "");
             Q_FOREACH(QPluginLoader *loader, list) {
                 QJsonObject json = loader->metaData().value("MetaData").toObject();
                 Q_FOREACH(const QString &mimetype, json.value("X-KDE-Import").toString().split(",", QString::SkipEmptyParts)) {
                     //qDebug() << "Adding  import mimetype" << mimetype << KisMimeDatabase::descriptionForMimeType(mimetype) << "from plugin" << loader;
                     mimeTypes << mimetype;
                 }
             }
             qDeleteAll(list);
             m_importMimeTypes = mimeTypes.toList();
         }
         return m_importMimeTypes;
     }
     else if (direction == KisImportExportManager::Export) {
         if (m_exportMimeTypes.isEmpty()) {
             QList<QPluginLoader *>list = KoJsonTrader::instance()->query("Krita/FileFilter", "");
             Q_FOREACH(QPluginLoader *loader, list) {
                 QJsonObject json = loader->metaData().value("MetaData").toObject();
                 Q_FOREACH(const QString &mimetype, json.value("X-KDE-Export").toString().split(",", QString::SkipEmptyParts)) {
                     //qDebug() << "Adding  export mimetype" << mimetype << KisMimeDatabase::descriptionForMimeType(mimetype) << "from plugin" << loader;
                     mimeTypes << mimetype;
                 }
             }
             qDeleteAll(list);
             m_exportMimeTypes = mimeTypes.toList();
         }
         return m_exportMimeTypes;
     }
     return QStringList();
 }
 
 KisImportExportFilter *KisImportExportManager::filterForMimeType(const QString &mimetype, KisImportExportManager::Direction direction)
 {
     int weight = -1;
     KisImportExportFilter *filter = 0;
     QList<QPluginLoader *>list = KoJsonTrader::instance()->query("Krita/FileFilter", "");
     Q_FOREACH(QPluginLoader *loader, list) {
         QJsonObject json = loader->metaData().value("MetaData").toObject();
         QString directionKey = direction == Export ? "X-KDE-Export" : "X-KDE-Import";
         if (json.value(directionKey).toString().split(",", QString::SkipEmptyParts).contains(mimetype)) {
             KLibFactory *factory = qobject_cast<KLibFactory *>(loader->instance());
 
             if (!factory) {
                 warnUI << loader->errorString();
                 continue;
             }
 
             QObject* obj = factory->create<KisImportExportFilter>(0);
             if (!obj || !obj->inherits("KisImportExportFilter")) {
                 delete obj;
                 continue;
             }
 
             KisImportExportFilter *f = qobject_cast<KisImportExportFilter*>(obj);
             if (!f) {
                 delete obj;
                 continue;
             }
 
             int w = json.value("X-KDE-Weight").toInt();
             if (w > weight) {
                 delete filter;
                 filter = f;
                 f->setObjectName(loader->fileName());
                 weight = w;
             }
         }
     }
     qDeleteAll(list);
     if (filter) {
         filter->setMimeType(mimetype);
     }
     return filter;
 }
 
 bool KisImportExportManager::batchMode(void) const
 {
     return m_document->fileBatchMode();
 }
 
 void KisImportExportManager::setUpdater(KoUpdaterPtr updater)
 {
     d->updater = updater;
 }
 
 QString KisImportExportManager::askForAudioFileName(const QString &defaultDir, QWidget *parent)
 {
     KoFileDialog dialog(parent, KoFileDialog::ImportFiles, "ImportAudio");
 
     if (!defaultDir.isEmpty()) {
         dialog.setDefaultDir(defaultDir);
     }
 
     QStringList mimeTypes;
     mimeTypes << "audio/mpeg";
     mimeTypes << "audio/ogg";
     mimeTypes << "audio/vorbis";
     mimeTypes << "audio/vnd.wave";
     mimeTypes << "audio/flac";
 
     dialog.setMimeTypeFilters(mimeTypes);
     dialog.setCaption(i18nc("@titile:window", "Open Audio"));
 
     return dialog.filename();
 }
 
 KisImportExportManager::ConversionResult KisImportExportManager::convert(KisImportExportManager::Direction direction, const QString &location, const QString& realLocation, const QString &mimeType, bool showWarnings, KisPropertiesConfigurationSP exportConfiguration, bool isAsync)
 {
     // export configuration is supported for export only
     KIS_SAFE_ASSERT_RECOVER_NOOP(direction == Export || !bool(exportConfiguration));
 
     QString typeName = mimeType;
     if (typeName.isEmpty()) {
         typeName = KisMimeDatabase::mimeTypeForFile(location, direction == KisImportExportManager::Export ? false : true);
     }
 
     QSharedPointer<KisImportExportFilter> filter;
 
     /**
      * Fetching a filter from the registry is a really expensive operation,
      * because it blocks all the threads. Cache the filter if possible.
      */
     if (direction == KisImportExportManager::Export &&
             d->cachedExportFilter &&
             d->cachedExportFilterMimeType == typeName) {
 
         filter = d->cachedExportFilter;
     } else {
 
         filter = toQShared(filterForMimeType(typeName, direction));
 
         if (direction == Export) {
             d->cachedExportFilter = filter;
             d->cachedExportFilterMimeType = typeName;
         }
     }
 
     if (!filter) {
         return KisImportExportErrorCode(ImportExportCodes::FileFormatIncorrect);
     }
 
     filter->setFilename(location);
     filter->setRealFilename(realLocation);
     filter->setBatchMode(batchMode());
     filter->setMimeType(typeName);
 
     if (!d->updater.isNull()) {
         // WARNING: The updater is not guaranteed to be persistent! If you ever want
         // to add progress reporting to "Save also as .kra", make sure you create
         // a separate KoProgressUpdater for that!
 
         // WARNING2: the failsafe completion of the updater happens in the destructor
         // the filter.
 
         filter->setUpdater(d->updater);
     }
 
     QByteArray from, to;
     if (direction == Export) {
         from = m_document->nativeFormatMimeType();
         to = typeName.toLatin1();
     }
     else {
         from = typeName.toLatin1();
         to = m_document->nativeFormatMimeType();
     }
 
     KIS_ASSERT_RECOVER_RETURN_VALUE(
                 direction == Import || direction == Export,
                 KisImportExportErrorCode(ImportExportCodes::InternalError)); // "bad conversion graph"
 
     ConversionResult result = KisImportExportErrorCode(ImportExportCodes::OK);
     if (direction == Import) {
 
         KisUsageLogger::log(QString("Importing %1 to %2. Location: %3. Real location: %4. Batchmode: %5")
                             .arg(QString::fromLatin1(from))
                             .arg(QString::fromLatin1(to))
                             .arg(location)
                             .arg(realLocation)
                             .arg(batchMode()));
 
 
 
         // async importing is not yet supported!
         KIS_SAFE_ASSERT_RECOVER_NOOP(!isAsync);
 
         if (0 && !batchMode()) {
             KisAsyncActionFeedback f(i18n("Opening document..."), 0);
             result = f.runAction(std::bind(&KisImportExportManager::doImport, this, location, filter));
         } else {
             result = doImport(location, filter);
         }
     }
     else /* if (direction == Export) */ {
         if (!exportConfiguration) {
             exportConfiguration = filter->lastSavedConfiguration(from, to);
         }
 
         if (exportConfiguration) {
             fillStaticExportConfigurationProperties(exportConfiguration);
         }
 
         bool alsoAsKra = false;
         bool askUser = askUserAboutExportConfiguration(filter, exportConfiguration,
                                                        from, to,
                                                        batchMode(), showWarnings,
                                                        &alsoAsKra);
 
 
         if (!batchMode() && !askUser) {
             return KisImportExportErrorCode(ImportExportCodes::Cancelled);
         }
 
         KisUsageLogger::log(QString("Converting from %1 to %2. Location: %3. Real location: %4. Batchmode: %5. Configuration: %6")
                             .arg(QString::fromLatin1(from))
                             .arg(QString::fromLatin1(to))
                             .arg(location)
                             .arg(realLocation)
                             .arg(batchMode())
                             .arg(exportConfiguration ? exportConfiguration->toXML() : "none"));
 
 
 
         if (isAsync) {
             result = QtConcurrent::run(std::bind(&KisImportExportManager::doExport, this, location, filter, exportConfiguration, alsoAsKra));
 
             // we should explicitly report that the exporting has been initiated
             result.setStatus(ImportExportCodes::OK);
 
         } else if (!batchMode()) {
             KisAsyncActionFeedback f(i18n("Saving document..."), 0);
             result = f.runAction(std::bind(&KisImportExportManager::doExport, this, location, filter, exportConfiguration, alsoAsKra));
         } else {
             result = doExport(location, filter, exportConfiguration, alsoAsKra);
         }
 
         if (exportConfiguration && !batchMode() && showWarnings) {
             KisConfig(false).setExportConfiguration(typeName, exportConfiguration);
         }
     }
     return result;
 }
 
 void KisImportExportManager::fillStaticExportConfigurationProperties(KisPropertiesConfigurationSP exportConfiguration, KisImageSP image)
 {
     KisPaintDeviceSP dev = image->projection();
     const KoColorSpace* cs = dev->colorSpace();
     const bool isThereAlpha =
             KisPainter::checkDeviceHasTransparency(image->projection());
 
     exportConfiguration->setProperty(KisImportExportFilter::ImageContainsTransparencyTag, isThereAlpha);
     exportConfiguration->setProperty(KisImportExportFilter::ColorModelIDTag, cs->colorModelId().id());
     exportConfiguration->setProperty(KisImportExportFilter::ColorDepthIDTag, cs->colorDepthId().id());
 
     const bool sRGB =
             (cs->profile()->name().contains(QLatin1String("srgb"), Qt::CaseInsensitive) &&
              !cs->profile()->name().contains(QLatin1String("g10")));
     exportConfiguration->setProperty(KisImportExportFilter::sRGBTag, sRGB);
 }
 
 
 void KisImportExportManager::fillStaticExportConfigurationProperties(KisPropertiesConfigurationSP exportConfiguration)
 {
     return fillStaticExportConfigurationProperties(exportConfiguration, m_document->image());
 }
 
 bool KisImportExportManager::askUserAboutExportConfiguration(
         QSharedPointer<KisImportExportFilter> filter,
         KisPropertiesConfigurationSP exportConfiguration,
         const QByteArray &from,
         const QByteArray &to,
         const bool batchMode,
         const bool showWarnings,
         bool *alsoAsKra)
 {
 
     // prevents the animation renderer from running this code
 
 
     const QString mimeUserDescription = KisMimeDatabase::descriptionForMimeType(to);
 
     QStringList warnings;
     QStringList errors;
 
     {
         KisPreExportChecker checker;
         checker.check(m_document->image(), filter->exportChecks());
 
         warnings = checker.warnings();
         errors = checker.errors();
     }
 
     KisConfigWidget *wdg = 0;
 
     if (QThread::currentThread() == qApp->thread()) {
         wdg = filter->createConfigurationWidget(0, from, to);
     }
 
     // Extra checks that cannot be done by the checker, because the checker only has access to the image.
     if (!m_document->assistants().isEmpty() && to != m_document->nativeFormatMimeType()) {
         warnings.append(i18nc("image conversion warning", "The image contains <b>assistants</b>. The assistants will not be saved."));
     }
     if (m_document->referenceImagesLayer() && m_document->referenceImagesLayer()->shapeCount() > 0 && to != m_document->nativeFormatMimeType()) {
         warnings.append(i18nc("image conversion warning", "The image contains <b>reference images</b>. The reference images will not be saved."));
     }
     if (m_document->guidesConfig().hasGuides() && to != m_document->nativeFormatMimeType()) {
         warnings.append(i18nc("image conversion warning", "The image contains <b>guides</b>. The guides will not be saved."));
     }
     if (!m_document->gridConfig().isDefault() && to != m_document->nativeFormatMimeType()) {
         warnings.append(i18nc("image conversion warning", "The image contains a <b>custom grid configuration</b>. The configuration will not be saved."));
     }
 
     if (!batchMode && !errors.isEmpty()) {
         QString error =  "<html><body><p><b>"
                 + i18n("Error: cannot save this image as a %1.", mimeUserDescription)
                 + "</b> Reasons:</p>"
                 + "<p/><ul>";
         Q_FOREACH(const QString &w, errors) {
             error += "\n<li>" + w + "</li>";
         }
 
         error += "</ul>";
 
         QMessageBox::critical(KisPart::instance()->currentMainwindow(), i18nc("@title:window", "Krita: Export Error"), error);
         return false;
     }
 
     if (!batchMode && (wdg || !warnings.isEmpty())) {
 
         KoDialog dlg;
 
         dlg.setButtons(KoDialog::Ok | KoDialog::Cancel);
         dlg.setWindowTitle(mimeUserDescription);
 
         QWidget *page = new QWidget(&dlg);
         QVBoxLayout *layout = new QVBoxLayout(page);
 
         if (showWarnings && !warnings.isEmpty()) {
             QHBoxLayout *hLayout = new QHBoxLayout();
 
             QLabel *labelWarning = new QLabel();
             labelWarning->setPixmap(KisIconUtils::loadIcon("warning").pixmap(32, 32));
             hLayout->addWidget(labelWarning);
 
             KisPopupButton *bn = new KisPopupButton(0);
 
             bn->setText(i18nc("Keep the extra space at the end of the sentence, please", "Warning: saving as %1 will lose information from your image.    ", mimeUserDescription));
 
             hLayout->addWidget(bn);
 
             layout->addLayout(hLayout);
 
             QTextBrowser *browser = new QTextBrowser();
             browser->setMinimumWidth(bn->width());
             bn->setPopupWidget(browser);
 
             QString warning = "<html><body><p><b>"
                     + i18n("You will lose information when saving this image as a %1.", mimeUserDescription);
 
             if (warnings.size() == 1) {
                 warning += "</b> Reason:</p>";
             }
             else {
                 warning += "</b> Reasons:</p>";
             }
             warning += "<p/><ul>";
 
             Q_FOREACH(const QString &w, warnings) {
                 warning += "\n<li>" + w + "</li>";
             }
 
             warning += "</ul>";
             browser->setHtml(warning);
         }
 
         if (wdg) {
             QGroupBox *box = new QGroupBox(i18n("Options"));
             QVBoxLayout *boxLayout = new QVBoxLayout(box);
             wdg->setConfiguration(exportConfiguration);
             boxLayout->addWidget(wdg);
             layout->addWidget(box);
         }
 
         QCheckBox *chkAlsoAsKra = 0;
         if (showWarnings && !warnings.isEmpty()) {
             chkAlsoAsKra = new QCheckBox(i18n("Also save your image as a Krita file."));
             chkAlsoAsKra->setChecked(KisConfig(true).readEntry<bool>("AlsoSaveAsKra", false));
             layout->addWidget(chkAlsoAsKra);
         }
 
         dlg.setMainWidget(page);
         dlg.resize(dlg.minimumSize());
 
         if (showWarnings || wdg) {
             if (!dlg.exec()) {
                 return false;
             }
         }
 
         *alsoAsKra = false;
         if (chkAlsoAsKra) {
             KisConfig(false).writeEntry<bool>("AlsoSaveAsKra", chkAlsoAsKra->isChecked());
             *alsoAsKra = chkAlsoAsKra->isChecked();
         }
 
         if (wdg) {
             *exportConfiguration = *wdg->configuration();
         }
     }
 
     return true;
 }
 
 KisImportExportErrorCode KisImportExportManager::doImport(const QString &location, QSharedPointer<KisImportExportFilter> filter)
 {
     QFile file(location);
     if (!file.exists()) {
         return ImportExportCodes::FileNotExist;
     }
 
     if (filter->supportsIO() && !file.open(QFile::ReadOnly)) {
         return KisImportExportErrorCode(KisImportExportErrorCannotRead(file.error()));
     }
 
     KisImportExportErrorCode status = filter->convert(m_document, &file, KisPropertiesConfigurationSP());
 
     if (file.isOpen()) {
         file.close();
     }
 
     return status;
 }
 
 KisImportExportErrorCode KisImportExportManager::doExport(const QString &location, QSharedPointer<KisImportExportFilter> filter, KisPropertiesConfigurationSP exportConfiguration, bool alsoAsKra)
 {
     KisImportExportErrorCode status =
             doExportImpl(location, filter, exportConfiguration);
 
     if (alsoAsKra && status.isOk()) {
         QString kraLocation = location + ".kra";
         QByteArray mime = m_document->nativeFormatMimeType();
         QSharedPointer<KisImportExportFilter> filter(
                     filterForMimeType(QString::fromLatin1(mime), Export));
 
         KIS_SAFE_ASSERT_RECOVER_NOOP(filter);
 
         if (filter) {
             filter->setFilename(kraLocation);
 
             KisPropertiesConfigurationSP kraExportConfiguration =
                     filter->lastSavedConfiguration(mime, mime);
 
             status = doExportImpl(kraLocation, filter, kraExportConfiguration);
         } else {
             status = ImportExportCodes::FileFormatIncorrect;
         }
     }
 
     return status;
 }
 
 // Temporary workaround until QTBUG-57299 is fixed.
 #ifndef Q_OS_WIN
 #define USE_QSAVEFILE
 #endif
 
 KisImportExportErrorCode KisImportExportManager::doExportImpl(const QString &location, QSharedPointer<KisImportExportFilter> filter, KisPropertiesConfigurationSP exportConfiguration)
 {
 #ifdef USE_QSAVEFILE
     QSaveFile file(location);
     file.setDirectWriteFallback(true);
     if (filter->supportsIO() && !file.open(QFile::WriteOnly)) {
 #else
     QFileInfo fi(location);
     QTemporaryFile file(fi.absolutePath() + ".XXXXXX.kra");
     if (filter->supportsIO() && !file.open()) {
 #endif
         KisImportExportErrorCannotWrite result(file.error());
 #ifdef USE_QSAVEFILE
         file.cancelWriting();
 #endif
         return result;
     }
 
     KisImportExportErrorCode status = filter->convert(m_document, &file, exportConfiguration);
 
     if (filter->supportsIO()) {
         if (!status.isOk()) {
 #ifdef USE_QSAVEFILE
             file.cancelWriting();
 #endif
         } else {
 #ifdef USE_QSAVEFILE
             if (!file.commit()) {
                 qWarning() << "Could not commit QSaveFile";
                 status = KisImportExportErrorCannotWrite(file.error());
             }
 #else
             file.flush();
             file.close();
             QFile target(location);
             if (target.exists()) {
                 // There should already be a .kra~ backup
                 target.remove();
             }
             if (!file.copy(location)) {
                 file.setAutoRemove(false);
                 return KisImportExportErrorCannotWrite(file.error());
             }
 #endif
         }
     }
 
     // Do some minimal verification
     QString verificationResult = filter->verify(location);
+    qDebug() << verificationResult;
     if (!verificationResult.isEmpty()) {
         status = KisImportExportErrorCode(ImportExportCodes::ErrorWhileWriting);
         m_document->setErrorMessage(verificationResult);
     }
 
 
     return status;
 
 }
 
 #include <KisMimeDatabase.h>
diff --git a/plugins/impex/kra/kra_export.cpp b/plugins/impex/kra/kra_export.cpp
index 4e9c4d8a7e..e3366be7b9 100644
--- a/plugins/impex/kra/kra_export.cpp
+++ b/plugins/impex/kra/kra_export.cpp
@@ -1,78 +1,94 @@
 /*
  * Copyright (C) 2016 Boudewijn Rempt <boud@valdyas.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "kra_export.h"
 
 #include <QCheckBox>
 #include <QSlider>
 
 #include <kpluginfactory.h>
 #include <QFileInfo>
 #include <QApplication>
 
 #include <KisImportExportManager.h>
 #include <KoColorModelStandardIds.h>
 #include <KoColorSpace.h>
 
 #include <KisExportCheckRegistry.h>
 #include <KisDocument.h>
 #include <kis_image.h>
 #include <kis_node.h>
 #include <kis_group_layer.h>
 #include <kis_paint_layer.h>
 #include <kis_shape_layer.h>
 #include <KoProperties.h>
 
 #include "kra_converter.h"
 
 class KisExternalLayer;
 
 K_PLUGIN_FACTORY_WITH_JSON(ExportFactory, "krita_kra_export.json", registerPlugin<KraExport>();)
 
 KraExport::KraExport(QObject *parent, const QVariantList &) : KisImportExportFilter(parent)
 {
 }
 
 KraExport::~KraExport()
 {
 }
 
 KisImportExportErrorCode KraExport::convert(KisDocument *document, QIODevice *io,  KisPropertiesConfigurationSP /*configuration*/)
 {
     KisImageSP image = document->savingImage();
     KIS_ASSERT_RECOVER_RETURN_VALUE(image, ImportExportCodes::InternalError);
 
     KraConverter kraConverter(document);
     KisImportExportErrorCode res = kraConverter.buildFile(io, filename());
     dbgFile << "KraExport::convert result =" << res;
     return res;
 }
 
 void KraExport::initializeCapabilities()
 {
     // Kra supports everything, by definition
     KisExportCheckFactory *factory = 0;
     Q_FOREACH(const QString &id, KisExportCheckRegistry::instance()->keys()) {
         factory = KisExportCheckRegistry::instance()->get(id);
         addCapability(factory->create(KisExportCheckBase::SUPPORTED));
     }
 }
 
+QString KraExport::verify(const QString &fileName) const
+{
+    QString error = KisImportExportFilter::verify(fileName);
+    if (error.isEmpty()) {
+        return KisImportExportFilter::verifyZiPBasedFiles(fileName,
+                                                          QStringList()
+                                                          << "mimetype"
+                                                          << "documentinfo.xml"
+                                                          << "maindoc.xml"
+                                                          << "mergedimage.png"
+                                                          << "preview.png");
+    }
+    return error;
+}
+
+
 #include <kra_export.moc>
 
diff --git a/plugins/impex/kra/kra_export.h b/plugins/impex/kra/kra_export.h
index bffdb4f824..77e5a7823f 100644
--- a/plugins/impex/kra/kra_export.h
+++ b/plugins/impex/kra/kra_export.h
@@ -1,39 +1,39 @@
 /*
  * Copyright (C) 2016 Boudewijn Rempt <boud@valdyas.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef _KRA_EXPORT_H_
 #define _KRA_EXPORT_H_
 
 #include <QVariant>
 
 #include <KisImportExportFilter.h>
 
 class KraExport : public KisImportExportFilter
 {
     Q_OBJECT
 public:
     KraExport(QObject *parent, const QVariantList &);
     ~KraExport() override;
 public:
     KisImportExportErrorCode convert(KisDocument *document, QIODevice *io,  KisPropertiesConfigurationSP configuration = 0) override;
     void initializeCapabilities() override;
-
+    QString verify(const QString &fileName) const override;
 };
 
 #endif
diff --git a/plugins/impex/ora/ora_export.cc b/plugins/impex/ora/ora_export.cc
index 711dbbbe79..e352f63005 100644
--- a/plugins/impex/ora/ora_export.cc
+++ b/plugins/impex/ora/ora_export.cc
@@ -1,103 +1,117 @@
 /*
  *  Copyright (c) 2007 Cyrille Berger <cberger@cberger.net>
  *
  *  This library is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU Lesser General Public License as published by
  *  the Free Software Foundation; version 2.1 of the License.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #include "ora_export.h"
 
 #include <QCheckBox>
 #include <QSlider>
 
 #include <kpluginfactory.h>
 #include <QFileInfo>
 #include <QApplication>
-
+#include <KoStore.h>
 #include <KisImportExportManager.h>
 #include <KoColorModelStandardIds.h>
 #include <KoColorSpace.h>
 #include <KisExportCheckRegistry.h>
 
 #include <KisDocument.h>
 #include <kis_image.h>
 #include <kis_node.h>
 #include <kis_group_layer.h>
 #include <kis_paint_layer.h>
 #include <kis_shape_layer.h>
 #include <KoProperties.h>
 
 #include "ora_converter.h"
 
 class KisExternalLayer;
 
 K_PLUGIN_FACTORY_WITH_JSON(ExportFactory, "krita_ora_export.json", registerPlugin<OraExport>();)
 
 OraExport::OraExport(QObject *parent, const QVariantList &) : KisImportExportFilter(parent)
 {
 }
 
 OraExport::~OraExport()
 {
 }
 
 
 bool hasShapeLayerChild(KisNodeSP node)
 {
     if (!node) return false;
 
     Q_FOREACH (KisNodeSP child, node->childNodes(QStringList(), KoProperties())) {
         if (child->inherits("KisShapeLayer")
                 || child->inherits("KisGeneratorLayer")
                 || child->inherits("KisCloneLayer")) {
             return true;
         }
         else {
             if (hasShapeLayerChild(child)) {
                 return true;
             }
         }
     }
     return false;
 }
 
 KisImportExportErrorCode OraExport::convert(KisDocument *document, QIODevice *io,  KisPropertiesConfigurationSP /*configuration*/)
 {
     KisImageSP image = document->savingImage();
     Q_CHECK_PTR(image);
     OraConverter oraConverter(document);
 
     KisImportExportErrorCode res = oraConverter.buildFile(io, image, {document->preActivatedNode()});
     return res;
 }
 
 void OraExport::initializeCapabilities()
 {
     addCapability(KisExportCheckRegistry::instance()->get("MultiLayerCheck")->create(KisExportCheckBase::SUPPORTED));
     addCapability(KisExportCheckRegistry::instance()->get("NodeTypeCheck/KisGroupLayer")->create(KisExportCheckBase::SUPPORTED));
     addCapability(KisExportCheckRegistry::instance()->get("NodeTypeCheck/KisAdjustmentLayer")->create(KisExportCheckBase::SUPPORTED));
     addCapability(KisExportCheckRegistry::instance()->get("sRGBProfileCheck")->create(KisExportCheckBase::SUPPORTED));
     addCapability(KisExportCheckRegistry::instance()->get("ColorModelHomogenousCheck")->create(KisExportCheckBase::SUPPORTED));
     QList<QPair<KoID, KoID> > supportedColorModels;
     supportedColorModels << QPair<KoID, KoID>()
             << QPair<KoID, KoID>(RGBAColorModelID, Integer8BitsColorDepthID)
             << QPair<KoID, KoID>(RGBAColorModelID, Integer16BitsColorDepthID)
             << QPair<KoID, KoID>(GrayAColorModelID, Integer8BitsColorDepthID)
             << QPair<KoID, KoID>(GrayAColorModelID, Integer16BitsColorDepthID);
     addSupportedColorModels(supportedColorModels, "OpenRaster");
 }
 
+QString OraExport::verify(const QString &fileName) const
+{
+    QString error = KisImportExportFilter::verify(fileName);
+    if (error.isEmpty()) {
+        return KisImportExportFilter::verifyZiPBasedFiles(fileName,
+                                                          QStringList()
+                                                          << "mimetype"
+                                                          << "stack.xml"
+                                                          << "mergedimage.png");
+    }
+
+    return error;
+}
+
 
 
 #include <ora_export.moc>
 
diff --git a/plugins/impex/ora/ora_export.h b/plugins/impex/ora/ora_export.h
index 2e06e207f3..a9e1a657d3 100644
--- a/plugins/impex/ora/ora_export.h
+++ b/plugins/impex/ora/ora_export.h
@@ -1,36 +1,37 @@
 /*
  *  Copyright (c) 2007 Cyrille Berger <cberger@cberger.net>
  *
  *  This library is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU Lesser General Public License as published by
  *  the Free Software Foundation; version 2.1 of the License.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #ifndef _ORA_EXPORT_H_
 #define _ORA_EXPORT_H_
 
 #include <QVariant>
 
 #include <KisImportExportFilter.h>
 
 class OraExport : public KisImportExportFilter
 {
     Q_OBJECT
 public:
     OraExport(QObject *parent, const QVariantList &);
     ~OraExport() override;
 public:
     KisImportExportErrorCode convert(KisDocument *document, QIODevice *io,  KisPropertiesConfigurationSP configuration = 0) override;
     void initializeCapabilities() override;
+    QString verify(const QString &fileName) const override;
 };
 
 #endif