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

How do I enable the built-in pdf viewer and stop Firefox from using Acrobat Reader?

  • 3 replies
  • 27 have this problem
  • 52353 views
  • Last reply by AjvarXX

more options

Firefox stopped displaying PDF's and now only allows me to save them. I want to view PDF's in the browser again.

Thank you.

Chosen solution

Hi, please try the following:

  1. Click the menu button New Fx Menu and choose Options.
  2. Select the Applications panel on the left.
  3. Check "Preview in Firefox" is set for "Portable Document Format (PDF)" -- if not, change it to this.

See View PDF files in Firefox or choose another viewer for a screenshot of what this page looks like.

If it is already set to that and it still won't load with the built-in viewer, please let us know. Thanks!

Read this answer in context 👍 3

All Replies (3)

more options

Chosen Solution

Hi, please try the following:

  1. Click the menu button New Fx Menu and choose Options.
  2. Select the Applications panel on the left.
  3. Check "Preview in Firefox" is set for "Portable Document Format (PDF)" -- if not, change it to this.

See View PDF files in Firefox or choose another viewer for a screenshot of what this page looks like.

If it is already set to that and it still won't load with the built-in viewer, please let us know. Thanks!

more options

Thanks! This solved my problem!

more options

Qantas94Heavy said

If it is already set to that and it still won't load with the built-in viewer, please let us know. Thanks!

I let you know that it doesn't work for me because it already was like that and instead of show me PDF itself Firefox tries to download it.

You know what's funny is here? That this problem only happens when I try to open ALREADY DOWNLOADED PDF! With pdf's location as link it works fine. But as soon as I try to open saved PDF... I get this stupid thing!

Already disabled all addons. This kinda pisses me off.