Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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.

[PDF] Open PDF Side-by-Side (Double Pages) by default ?

  • 2 replies
  • 1 has this problem
  • 292 views
  • Last reply by Nic0wyN
  • Solved

Nic0wyN
Nic0wyN

Hi, How can i do to make firefox open all pdf with side by side (Double pages) page option please ?

Thanks in advance for your help.

Hi, How can i do to make firefox open all pdf with side by side (Double pages) page option please ? Thanks in advance for your help.

Chosen solution

False, i have find solution on reddit. Have to do : about:config, pdfjs.spreadModeOnLoad change "0" to "1" and firefox will open PDF on double page (side by side) by default.

Thanks anyway for your reponse.

Read this answer in context 👍 0

All Replies (2)

WestEnd
WestEnd

That isn't possible with the Browser you need something adobe installed to do that feature.

or read here.

https://support.mozilla.org/en-US/questions/951711

Nic0wyN
Nic0wyN Question owner

Chosen Solution

False, i have find solution on reddit. Have to do : about:config, pdfjs.spreadModeOnLoad change "0" to "1" and firefox will open PDF on double page (side by side) by default.

Thanks anyway for your reponse.