Install pdftoppm

Installing pdftoppm from poppler tools is a requirement for the Zotero OCR plugin. However, this can be quite challenging and it depends on your operating system you are working on. This page contains some hints and experience of how this can be done. Feel free to add more information if you have found a better solution in your case or the information here is to sparse.

Windows

1. Go to https://github.com/oschwartz10612/poppler-windows
2. Navigate there to the latest release
3. Download the zip
4. Unzip and save the files in a new folder
5. Adjust in the preferences of the Zotero OCR plugin the location of pdftoppm

macOS

1. Open a terminal
2. Install homebrew (only if you have not already done this before), see https://brew.sh/
3. brew install poppler

Linux (Ubuntu)

1. sudo apt-get install poppler-utils