Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Customize PDF Viewer toolbar

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Is there a way to customize PDF viewer toolbar in Firefox?

Is there a way to customize PDF viewer toolbar in Firefox?
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No, that is not possible. What kind of changes would you want to make ?

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Because Firefox treats the PDF viewer as part of the browser, add-ons are not allowed to change it or add tools to it. If you have an add-on that you want to be able to modify the viewer or act on PDFs you view in Firefox, you can load the PDF into the web app version of the viewer which Firefox treats as just another web page. You'll notice an extra "open file" button on the toolbar of that version:

https://mozilla.github.io/pdf.js/web/viewer.html

Possibly there could be an add-on that automatically opens PDFs in that customizable viewer, but I haven't searched around for it.