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PDF Direct

Firefox extension to skip academic journals' "enhanced" PDF viewers to direct PDF downloads.

Install

Get the add-on at https://addons.mozilla.org/addon/pdf-direct/.

Example

With Extension Without Extension
With Extension Without Extension

Supported Publishers

The extension works with major academic publishers and their university proxy versions:

  • American Chemical Society (ACS)
  • Cambridge University Press
  • Elsevier (ScienceDirect)
  • IEEE (Institute of Electrical and Electronics Engineers)
  • JSTOR (Academic archives)
  • Nature Publishing Group
  • Oxford University Press
  • PLOS (Public Library of Science)
  • PNAS
  • Royal Society Publishing
  • Sage Publications
  • Springer Nature
  • Taylor & Francis
  • Wiley

The extension automatically works with:

  • Direct publisher websites (e.g., journals.sagepub.com)
  • OCLC WorldCat proxies (e.g., journals-sagepub-com.university.idm.oclc.org)

How It Works

The extension intercepts requests to academic journal "enhanced" PDF viewers and redirects them to direct PDF downloads by converting:

  • /doi/reader/ → /doi/pdf/
  • /doi/epdf/ → /doi/pdf/
  • /doi/epub/ → /doi/pdf/

This works across both direct publisher domains and proxy services.

License

MIT

Contributing and development

Submit an issue if you want me to add a publisher / feature / squash a bug.

Development requirements:

  • web-ext (npm install -g web-ext)
  • gh CLI (brew install gh)
  • jq (brew install jq)

Build and publish extension

  1. Download/clone https://github.com/mvuorre/pdf-direct
  2. Test extension manually: make test
  3. Lint extension: make lint
  4. Increment version in manifest.json
  5. Create release: make release
  6. Sign & submit extension: make sign (but note this requires private keys)

Credits