Komunitné fórum Firefox

I have looked at some of the comments about Firefox automatically opening pdf docs. Myu concern is twofold. Most importantly the password in the doc is somehow being overriden; that is a severe security issuen for me. Destroys the whole concept of security. Makes me very uncomfortable and may discontnue using Forefox after more than 15 years. Secondly this caught me by surprise; it only occurred for the first time this morning. How can i overcome this to prevent Firefox from performing merely as a browser?

I go to various websites, in this case https://go.valcom.com/EZ-GW1Rezipinstallationmanual (as well as other pages on this same site) and when I try to look at a manual or specs in pdf format, I get a blank screen and the URL looks like the go. and everything after the .com are grayed out. These work fine in Edge and Chrome. This also happens in Troubleshoot mode. No hardware or software changes on my desktop.

When viewing pdf files created from MS Word (.docx) documents and sent to me I see white lines across some images but not all. This happens with Firefox on Windows 11 and linux mint (various versions). It is present on the images from the file as received and after uploading to a website. The images are OK if viewed using Opera or other browsers but the same problem is present on Thunderbird. The file below has the problem on 2 images when viewed on Firefox. https://www.kass.org.uk/Documents/NewsletterFrom251114/20260304%20March%20Newsletter.pdf I have caused the writer of the article a lot of trouble because I blamed her file which seems to be OK. Can you help? Thanks Brian

Well, there is a bug with your downloading files configurations that REALLY ANNOYS me, which is, i want to always select where to save my downloaded files, no problem with that, i just set all configurations to "always ask", but sometimes, especially for pdfs, i want to just open them, without the need to save them to my computer, so the only one i have set as "open with firefox" is the pdfs, and if i want to download them, i just do so by clicking the download button on the corner. BUT, with this configuration, if there is a button to download a pdf, without opening it previously, it will skip the "ask where to download" pop-up, which is a pain in the ass, as usually want my stuff in specific folders, not the general downloads one. And even iff i set pdfs to "always ask" and then chose to open with firefox, it will automatically download it (???????) to the downloads folder, and then open it from my pc, even tho it could open it from the file in the server, which is what i wanted. I just switched to firefox, please fix this awful feature and dont make me find another browser.

Since the update to Firefox a few days ago, I am no longer able to view PDFs in the browser. They still open, but they show up as blank pages. Is there a way to fix this or to revert back to the previous version of FF?

Thanks.

1. Have read some recent questions which are similar. 2. My current Firefox is 151.04 (64 bit) I use Windows 11 Home 3. My problem relates to payroll in QuickBooks and has only occurred for payroll run after 20th May 2026. PDF's for payrun dated 20th May 2026 open with no problem. Any payroll reports after that date fail.

     I download payrun report and the page in firefox browser tab shows a 0 of 0 display (not the normal report)

      The file is sitting in browser download, as well as my C drive file explorer under 'downloads'

      When I double click, or highlight and select open, or highlight and select open with - my SodaPDF app displays a message indicating it failed to open a file.

4. Queried QuickBooks who believe it is a compatibility error.

5. Queried app provider (Soda PDF) and have been doing checks with them, but not able to resolve at this time.

6. Last resort went into QuickBooks using Microsoft Edge - file opened in SodaPDF with no problem.

As my preference is Mozilla browser, would like to have resolved ASAP, otherwise I need to use another browser. Await your advice - Kind regards

I am writing the following sentence in html: <a href="https://www.users.no/ingehelland/Desktop/QDT_article.pdf">QDT_article</a>. Firefox refuses to open the file

I'm filling out an appcation for a study permit in canada. My university website said that i should download adobe acrobat reader and use it to open the application pdf. I didn't want to pay for adobe, so i opened it with firefox instead. In the document, there are tab selections that it allows so you can select answers accurate to you and fill out the document. But at the top of the document it says I should enable javascript by going to preferences, then edit, and and then reopen the form. How can I enable javascript in firefox? I'm having difficulty finding the preferences and edit sections.

I am currently revising for professional qualifications and the PDF study manual I am using is extremely large.

I have seen tutors be able to use the document outline on the left sidebar to be able to filter through different chapters.

However, I do not have that option - I only have the option to view page-by-page which is not very helpful.

How can I get the document outline to show a chapter-by-chapter outline?

When filling in the PDF documents, at each section/line I move too, the font reverts back to the super large size, without being prompted too. Is there a way to set the font, so it remains the same, unless prompted? When attempting to adjust the font, it goes from super large to super small, any suggestions to set the font in between these two sizes?

• • I opened up the document from my email and began working from there. Should I use a PDF program and not from the email?**

Hi Mozilla Support Community,

I use Firefox Desktop as my primary browser for running a corporate consultancy agency. Recently, I've noticed an issue with Firefox's built-in PDF reader (pdf.js) on certain official interactive forms.

When downloading, previewing, and filling out business registration forms, MOA templates, or tax certificates from corporate web portals (such as the SECP Portal Pakistan for company name search and FBR verification tools), certain custom font fields in the PDF appear overlapped or fail to display input text properly.

System Details:

Firefox Version: Latest Desktop Release (Windows 11) Issue: Form text fields in interactive PDFs fail to render non-standard font glyphs properly. I wanted to ask:

Is there a specific preference in about:config to force Firefox's PDF.js viewer to fallback to system fonts for interactive form fields? Is there a way to reset pdf.js rendering cache without clearing general site cookies and sessions for web applications? Any troubleshooting tips or about:config tweaks would be greatly appreciated. Thanks! https://secpportal.com.pk/

Anytime that I open a pdf using firefox the page will load but will just leave a blank page with nothing displayed. Reloading does not help and I have tried to change my settings around to no avail

In the past, I was able to freehand highlight PDFs that did not recognize the Text. I was using this function this week; maybe the newest Firefox update is at fault. Without this, half of my documents are not really usable in Firefox. Everything else works. If it recognizes the text, I have no problems; the pencil tool also works just fine.

I read Firefox's suggestion to use the browser to edit pdf's and thought I'd give it a try, thinking I might be able to use it instead of my old Adobe Acrobat editor.

But I immediately noticed that there's no way to draw a shape with the Firefox pdf editor - a circle for example. The Help says I can select shapes from the Draw menu but the only thing that appears on my Draw menu is a line (see the attachment).

What am I doing wrong?