# Mendeley web importer problem

**URL:** <https://discourse.mozilla.org/t/mendeley-web-importer-problem/99376>\
**Category:** Add-on Support\
**Created:** [July 5, 2022, 6:02pm UTC](https://discourse.mozilla.org/t/mendeley-web-importer-problem/99376 "2022-07-05T18:02:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mikarm](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@mikarm](https://discourse.mozilla.org/u/mikarm)\
**Post date:** [July 5, 2022, 6:02pm UTC](https://discourse.mozilla.org/t/mendeley-web-importer-problem/99376/1 "2022-07-05T18:02:19Z")

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I have a problem with Mendeley Web Importer: “for security firefox blocks extensions running on pdf files”

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**Author:** ![juraj.masiar](https://sea1.discourse-cdn.com/flex001/user_avatar/discourse.mozilla.org/juraj.masiar/32/30587_2.png) [@juraj.masiar](https://discourse.mozilla.org/u/juraj.masiar)\
**Post date:** [July 5, 2022, 6:58pm UTC](https://discourse.mozilla.org/t/mendeley-web-importer-problem/99376/2 "2022-07-05T18:58:36Z")

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I don’t think there is a workaround yet, extensions can’t run on PDF pages since Firefox 60:

> **[1454760 - content\_scripts won't load with pdf.js tabs](https://bugzilla.mozilla.org/show_bug.cgi?id=1454760)**
>
> RESOLVED (nobody) in WebExtensions - Untriaged. Last updated 2022-05-24.