I-Firefox Community Forum

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.

On loading some documents a popup appears asking me to "Sign on the dotted line". This shows a pencil making a signature. I am unable to move or delete this popup and therefore cannot read the document fully. I can't print it either as the popup obscures the printer instruction area. I would be very pleased to know how to remove/block/disable this uncalled for obstruction

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 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?

How to download a pdf without secure download ? I thought windows defender was the problem, but I can download a pdf without cleaning it with chrome.

My tax return declaration is made using a spreadsheet like pdf document, and when downloading it with firefox, the cleaned document cannot be filled in.

When I try to select some object on a pdf page, a little window appears with "select" and "comment", and the window blocks other objects of the page. How to remove that forever? That is very inconvenient.

Since this morning, Firefox previews any PDF I click on, and then I have to manually download it for it to open in Acrobat. Acrobat is set as my system default. I have tried other suggestions found here, such as going into the troubleshooting and checking the folder profile, but nothing works. It is very frustrating.

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.

idk, what i did, but i assume it's most likely user error. but i don't even know where to go from where i'm at.

ok, i'm going to attempt to identify what is happening. [guess] .pdf website previews are messing up the font when converting the .pdf to an image asset for the website to use as a current web asset, when the .pdf is updated. (makes sense really, smart drag & drop update of a .pdf menu, has instruction to make the end users browser do the work for you. kind of a one and done webpage coding for older guys that can't type, let alone edit Html, or even use Wix. some people just don't "compute" hard R or not. lol )

i don't even know where to start. i mean Mozilla is probably referencing it's own "lib.moz" which is just probably it's own personal link to an existing Lib file so it can pull it in and do what it needs to do with it without Root etc.

that is probably working fine as it renders (opens) the .pdf fine whence it's downloaded it. so all that i've talked about might not be the problem.

there is probably some mozilla function calling that to convert the .pdf as an image web asset so that it can show a preview of the current .pdf available for download.

that converter is messing up the font recognition, and building a preview image with messed up font characters (why it looks like Wing-Dings). but i don't even know where to start, and i don't think a new install will solve this (kinda overkill, and any residual files may still remain.)

i'm adding a fastfetch

─────────────────────────────────────────────────────────────────────
BIOS (UEFI)          F20 (4.6)
Board                X79-UD3 (1.1)
─────────────────────────────────────────────────────────────────────
CPU                  Intel(R) Core(TM) i7-3820 (8) @ 3.80 GHz
CPU Cache (L1)       4x32.00 KiB (D), 4x32.00 KiB (I)
CPU Cache (L2)       4x256.00 KiB (U)
CPU Cache (L3)       10.00 MiB (U)
─────────────────────────────────────────────────────────────────────
GPU                  NVIDIA GeForce GTX 1660 SUPER [Discrete]
Vulkan               1.4.341 - NVIDIA [610.43.02]
OpenCL               3.0 CUDA 13.3.44
OpenGL               4.6.0 NVIDIA 610.43.02
─────────────────────────────────────────────────────────────────────
Display (VG248)      1920x1080 @ 1.5x in 24", 60 Hz [External] *
Display (VG248)      1920x1080 @ 1.5x in 24", 60 Hz [External]
Display (TOSHIBA-TV) 1920x1080 @ 1.5x in 72", 60 Hz [External]
─────────────────────────────────────────────────────────────────────
Memory               9.66 GiB / 31.26 GiB (31%)
Swap                 12.00 KiB / 1.91 GiB (0%)
Disk (/)             675.49 GiB / 7.22 TiB (9%) - ext4
─────────────────────────────────────────────────────────────────────
OS                   Linux Mint 22.3 x86_64
OS Age               99 days
Uptime               5 days, 2 hours, 40 mins
Packages             2452 (dpkg), 18 (flatpak)
─────────────────────────────────────────────────────────────────────
Kernel               Linux 6.17.0-35-generic
Bootmgr              Ubuntu - shimx64.efi
gcc                  13.3.0
Init System          systemd 255.4-1ubuntu8.16
Shell                bash 5.2.21
LM                   lightdm-autologin 1.30.0 (X11)
DE                   Cinnamon 6.6.7
WM                   Muffin (X11)
Terminal             GNOME Terminal 3.52.0
Terminal Font        MesloLGS Nerd Font Mono (12pt)
─────────────────────────────────────────────────────────────────────

Mozilla Firefox 152.0.1 " updates are manage by your operating system."

re-posted from; [[Why is Firefox PDF printing so strange?|https://support.mozilla.org/en-US/questions/1275786#answer-1276068]] and edited: reasons; support ticket gudelines [[Posting support requests|https://support.mozilla.org/en-US/kb/mozilla-support-rules-guidelines#w_subjects-covered-in-the-support-forum]]

[[i somewhat found an "answer" though i'd hardly call that "solved."|https://support.mozilla.org/en-US/questions/1275786#answer-1276068]]

i still say a Lib in a repo needs updated, within, or perhaps up stream of the project to reflect "commonly used fonts" if applicable (i know that's the trick, 'is it FOSS') yet other browsers use it, though idk if they're FOSS... i'd need to know what i'm looking for to confirm that or not, and do something about that (again most likely upstream, as the PDF Viewer is probably it's own project (or even several), retooled by Mozilla for Firefox.

I use Firefox as my default program for opening PDFs. But if I try to open more than one at the same time it will always leave one out and instead open a "New Tab" that I don't need. Can't figure out why or how to fix it.

Example: If I check (windows 11) files A, B, C, D, and E. It will open A, B, D, & E and a "New Tab" and leave out C.

Any Solutions?

I clicked on a PDF website while searching for articles on relations between Ukrainian settlers and First Nations people. Instead of opening so I could read it, it was automatically downloaded as a file into Firefox. Unfortunately, I noticed the title had random parentheses in AFTER I clicked on it to read it. I updated Windows defender, and ran the offline scan. I also uploaded and ran MSN.com M.S.R.T. and Malware Bytes, but they found nothing.

What happened? Did I unwittingly install Russian malware into my computer, or does Fire Fox automatically download some PDF websites as files?

Thanks,

Charlotte

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