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Upload and export documents

Upload documents

To upload additional documents in a library:

  1. In the list view of the Documents tab, select Upload documents .
  2. Select Add files.
  3. Select the files to upload.
    1. In the Settings tab:
      1. Switch on Pdf document view to process with the Extract technology and view the PDF files in order to work on them in their original format. If not switched, all the documents are converted with the Apache Tika toolkit and used as txt files.
        1. Select or deselect Enable or disable table and title detection to enable or disable table and title detection
        2. Select or deselect Enable or disable OCR extraction to enable or disable OCR extraction
      2. Switch off Autodetect language to disable automatic language detection. Select the preferred language manually from the Select language drop-down list.
      3. Switch off Autodetect encoding to disable the automatic character encoding detection. Select manually the preferred encoding from the Select encoding drop-down list.
      4. Select Save as corpus to save your documents as a corpus and type a name for it.
    2. In the Documents tab:
      1. Display the list of documents and folders to upload. They can be deleted by clicking on the X button at the right of the file name.
  4. Select Upload.


You will be asked to reload the library in the lower right corner to have the updated number of documents.

You can also upload documents from the Library dashboard

Supported formats and limits

Supported document formats are those managed by the Apache Tika toolkit. Documents are automatically converted to plain text files during upload.

Documents are ignored if:

  • They are empty.
  • They mainly consist of nonsense words.
  • Their language is unrecognized or not supported (in case of automatic language recognition).
  • They exceed the following values:

    • 200 MB for .zip files.
    • 1 MB for .txt files.
    • 100 MB for other file types.

At most the first 50KB of text is considered for each document.

Export documents

To export documents in the Documents tab, list view:

  1. Select Export .
  2. In the Export documents window, Export tab, enter the filename or confirm the suggested one and select the format in Extension.
  3. Documents are pre-processed when uploaded and spacing is affected. For example, a sequence of empty lines is compressed to one. If you want to export documents with their original spacing, check Include original text spaced documents.
  4. Select the Export filter to filter the documents set to export:

    • Confirm All documents to download the whole corpus (Set by default).


    • Select Filtered documents to download a filtered list of the documents according to the following available filters:

      • Documents with annotations.
      • Documents with categories.
      • Current list of filtered documents.
  1. Select Export.
  2. In the Download tab or in the notification in the lower right corner, select Download.