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.

ค้นหาฝ่ายสนับสนุน

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.

เรียนรู้เพิ่มเติม

Why can't Firefox open a .pdf sometimes?

  • 1 การตอบกลับ
  • 2 คนมีปัญหานี้
  • 11 ครั้งที่ดู
  • ตอบกลับล่าสุดโดย cor-el

more options

Sometimes Firefox 45.0 on my MacBook Pro running 10.11.3 will open a .pdf file in a new tab. Sometimes it will instead offer to save it.

The .pdf I'm trying to look at right now is my monthly statement from PayPal. Firefox wants to save it.

I looked in Preferences -> Applications and scrolled down to find *two* entries (See screenshot.), both with pop-up Action menus. The bottom entry looks good with the Action Pop-Up set the "Preview in Firefox".

The top entry Action Pop-up does not have a selection for "Preview in Firefox", so I selected "Use other..." and navigated to Applications -> Firefox -> Firefox.app. This did not seem to help. When I clicked away it reverted to "Use Preview".

Are there two kinds of .pdf files, one that Firefox can view and not the other?

--Gil

Sometimes Firefox 45.0 on my MacBook Pro running 10.11.3 will open a .pdf file in a new tab. Sometimes it will instead offer to save it. The .pdf I'm trying to look at right now is my monthly statement from PayPal. Firefox wants to save it. I looked in Preferences -> Applications and scrolled down to find *two* entries (See screenshot.), both with pop-up Action menus. The bottom entry looks good with the Action Pop-Up set the "Preview in Firefox". The top entry Action Pop-up does not have a selection for "Preview in Firefox", so I selected "Use other..." and navigated to Applications -> Firefox -> Firefox.app. This did not seem to help. When I clicked away it reverted to "Use Preview". Are there two kinds of .pdf files, one that Firefox can view and not the other? --Gil
ภาพหน้าจอที่แนบมา

วิธีแก้ปัญหาที่เลือก

The built-in Firefox PDF Viewer only supports the content type application/pdf. If the server sends the file with a different content type or as content disposition then Firefox will only offer to save the file.

อ่านคำตอบนี้ในบริบท 👍 1

การตอบกลับทั้งหมด (1)

more options

วิธีแก้ปัญหาที่เลือก

The built-in Firefox PDF Viewer only supports the content type application/pdf. If the server sends the file with a different content type or as content disposition then Firefox will only offer to save the file.