Location for pdftoppm on Linux Zotero installation

cmhorn
Trying to OCR and getting the error:

No /app/share/zotero/pdftoppm executable found.
  • dstillman
    pdftoppm isn't included with Zotero. If you're referring to https://github.com/UB-Mannheim/zotero-ocr, you need to actually install the executable, as noted there.
  • cmhorn
    According to the readme, and the error being thrown, it is required.

    ## Prerequisites

    - Tesseract OCR is installed
    - for Windows see https://github.com/UB-Mannheim/tesseract/wiki
    - for Linux, Mac see https://github.com/tesseract-ocr/tesseract/wiki
    - `pdftoppm` from poppler library is downloaded and copied to the other scripts in the Zotero directory


    ## Installation

    To install the extension:

    * Download the XPI file of the [latest release](https://github.com/UB-Mannheim/zotero-ocr/releases).
    * In Zotero, go to Tools → Add-ons and drag the .xpi onto the Add-ons window.
    * Possibly, adjust the path to Tesseract in the add-on options.
  • cmhorn
    To be more clear, I have copied the pdftoppm file into every directory I can see that is related to Zotero, and no change.

    To what directory for a pdftoppm executable is it referring?
  • cmhorn
    For what it is worth, I think the directory on my installation is:

    /home/USER/.local/share/flatpak/app/org.zotero.Zotero/x86_64/stable/021402b4c4c3e353f1e2346f4b2408bdca37cc1ffe6851a6209b3b1e7daad4f0/files/share/zotero
  • adamsmith
    edited September 8, 2020
    I'd be surprised if the app was tested using flatpack installs of Zotero, so might just be that, but have you tried the path specified in the error message, ie. /app/share/zotero/pdftoppm
  • cmhorn
    edited September 8, 2020
    Given that it doesn't exist, no. In any case the directory above worked.

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