This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox Recognizing All PDFs as ZIP files

  • 2 replies
  • 1 has this problem
  • 1 view
  • Last reply by cor-el

kasa05
kasa05
more options

I've never encountered this problem before... I am using a new computer but have used firefox exclusively for decades.

Every time i try to read a PDF, Firefox recognizes it as a .zip file, which it clearly isn't. I can't even choose acrobat reader as an option to open the files. If i manually go to the downloads tap and click on the file there, it immediately opens as a pdf in reader. What on earth is going on?

I've never encountered this problem before... I am using a new computer but have used firefox exclusively for decades. Every time i try to read a PDF, Firefox recognizes it as a .zip file, which it clearly isn't. I can't even choose acrobat reader as an option to open the files. If i manually go to the downloads tap and click on the file there, it immediately opens as a pdf in reader. What on earth is going on?
Attached screenshots

All Replies (2)

jonzn4SUSE
jonzn4SUSE
  • Top 10 Contributor
more options

Just to verify, can you show what you have set here as the default app for pdf? see screenshot

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can look at this extension.

See also: