Unfortunately, Firefox 103 has a bug in the PDF viewer on Mac OS. When printing a PDF with embedded images or consisting of images, the images are scaled up so some of them is lost.

This problem should not affect printing regular web pages. If you have a problem printing regular web pages, let's discuss that in more detail.

There is a bug report on file, and fingers crossed for a fix in a few weeks in Firefox 104 (but no patch is in testing yet).

Until then, I suggest that Mac users print any PDFs containing images through Preview or Acrobat or Safari. If you want to change your default handling because there are a lot of those, this article has the steps: View PDF files using Firefox’s built-in viewer.

By the way, if you are viewing a PDF in the built-in viewer, you can save it without printing again using the Download button on the viewer's toolbar:

The PDF preview in iMac does this with the whole document. I.e. it shows large fonts and my shows a portion of the upper left and top quadrent of the document. The only thing you can do is down load and save the document, then print view. Old, arciec PC style. 99 % of my documents are print prievew from Gmail pdf and “drag and drop” to another application.

FireFox has incrased the number of clicks to print preview from 2 to six and now having to save file and reopen with preview increased that time from seven seconds to over a minute per document. IE instead of processing 7 documents per min or 420 per hour FF has religated me to less than 60 per hour. That is how stupid an idea this FF print system is. SYSTEM DIALOGUE IS THE ONLY PRINT METHOD. PUT IT BACK THE WAY IT USED TO BE. See my post yestrrday with attachment.

Hi Dean, if you want to skip Firefox's combined preview/setup overlay, you can use the following combination of hidden settings:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

More info on about:config: Configuration Editor for Firefox. The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future.

(2) In the search box in the page, type or paste print.prefer_system_dialog and pause while the list is filtered (this requires Firefox 102 or newer)

(3) Double-click the print.prefer_system_dialog preference to switch the value from false to true -- this bypasses the built-in preview when you call up File > Print or press Command+P

(4) Clear the search box and type or paste print.show_page_setup_menu and pause while the list is filtered (this requires Firefox 97 or newer)

(5) Double-click the print.show_page_setup_menu preference to switch the value from false to true -- this restores Page Setup to the File menu

Does that improve your workflow?

Hi ed209, the changes I mentioned to Dean won't solve the problem of Firefox mis-scaling images when printing PDFs, so please continue to use the workaround of printing PDFs from another program until this bug is fixed.

I have this same problem. Images are zoomed in, but text is ok. This happens if I print on my printer or print to PDF. Other browsers and apps print fine. It only happen when printing from Firefox. I have version 104.0.2

I have this same problem. Images are zoomed in, but text is ok. This happens if I print on my printer or print to PDF. Other browsers and apps print fine. It only happen when printing from Firefox. I have version 104.0.2

Yes, this wasn't fixed in time for Firefox 104. It will be fixed in Firefox 105 (scheduled to release on September 20, 2022).