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Hi all, I remember in older versions of Firefox (within the past 6 months) that pdfs embedded in a page would be a hyperlink that you had to click which would open in another tab. Now pdfs automatically open which is very annoying as it makes it difficult to read, while I found a way to open it in another tab I was wondering if there is a setting I can disable so I can just click on a hyperlink.

Thanks in advance

Hello... currently when I try to open a PDF from the internet, I cannot open it in Firefox. Specifically I have been adding PDF files to a FB page, but cannot open the document when browsing in Firefox. I can open it, when using EDGE.

I closed a PDF file but can not move it to another folder. Windows says it is open in firefox. I closed firefox and it still says it is open in firefox. I even restarted windows and it still says it is open in firefox. How do I get firefox to close and release the file?

Hi, I am having an issue in mobile on iPhone 13 mini where I am trying to view a PDF (a bill so I can’t share the link) and it just opens to a about:blank page that says:

“Your bill is almost ready. Please wait.

Are you using a Chrome browser? Check your browser’s Downloads folder for a PDF of your bill.”

I wait and nothing happens. When I try in chrome it opens immediately in another tab (and doesn’t go to the downloads folder funny enough).

It isn’t in my downloads folder here either.

I don’t think it’s the site since it works in chrome.

I tried turning off pop up blocker, clicking the link again, and it didn’t change anything.

I also notice it is labeling the blank page as an insecure connection. It is from my city electric company so that wouldn’t be likely.

Thank you

Hi everyone,

After enabling `privacy.resistFingerprinting = true` in `about:config`, I noticed that Firefox’s built-in PDF viewer (`pdf.js`) is always displayed in **light mode**, even though my system and browser themes are both dark.

I understand that RFP forces `prefers-color-scheme: light` to prevent fingerprinting, but this also affects internal components like the PDF reader. Unfortunately, the PDF viewer doesn’t provide a manual dark mode toggle.

Is there any **official or safe workaround** that allows keeping RFP enabled while still having the PDF viewer use dark colors?

Thanks!

open downloaded pdf from "download tab" in new tab always. Opening in the same last tab, destroys the opened tab which often not support back option e. g. Banking websites.

Pls give option of new tab opening of downloaded files.

Using Firefox 143.0 on Ubuntu 24.04, when loading PDFs into the browser window, the PDF does not get properly rendered. Instead, when scrolling part or all of the PDF just show the desktop or windows behind Firefox. This usually happens after opening several PDFs and then keeps happening until I restart Firefox. Is there an issue for this extremely annoying bug?

Using Firefox on iPad (IOS 18.6.2), When working on a any website that have PDF files to view, When trying to open a document, the viewer only shows a black screen with code lines on it. Need assistance to know how to clear the browser settings to restore the viewer.

I am a magazine editor right on deadline and as my Firefox inisted it must be updated I endeavoured to do so and now it will nor allow me to open up and forward any pdfs.Please help.

There should be an option whether the pdfs should be opened in the app or just DOWNLOAD, because sometimes the pdf is long enough that it takes much time to load and after that we are able to download.

Hi Firefox Team,

Why suddenly today there's no PDF preview for all PDF file sent or received on browser (i.e whatsapp web) Attached latest screenshots

Please assist.

Regards, Novie

I am using the FireFox PDF Editor to annotate a PDF, however, no method of me saving the document (whether that is save as, or save as PDF) will allow me to save any annotations on the document. If I try doing save as PDF, the preview shows up as blank sheets of paper, when I click "save as" it only saves one page of the 31 as BLANK. If I try doing normal save as, the saved file is un-annotated.

Please help... thanks