Center Pages

Center-Pages allows you to narrow wide pages to the center of your screen. Center-Pages simply adds a margin to the sides, which you can increase/decrease via two buttons.

Align pages to the center of your screen.

Description

If you use a wide screen you may have encountered websites with long endless lines across the whole width of your screen or websites which align to the very left side of your screen so close to the border that it hurts. For such websites you can use Center-Pages. Center-Pages simply adds a margin to the sides, which you can increase/decrease via two buttons.

Open Source

Center-Pages is Open-Source Software. The source code can be found at: https://github.com/feluxe/Center-Pages

Permission

Unfortunately this extension requires the "Access your data for all websites" permission. Without this permission there is no way to achieve the functionality of this extension.

If you are concerned you can always checkout the source-code here: https://github.com/feluxe/Center-Pages

Alternatively you can take a look directly at the extension-bundle code. How this works is explained here: https://superuser.com/a/1582018

Known Issues

The extension API does not allow for a clean implementation of this feature. Center-Pages is able to narrow down a lot of pages, but it doesn't work for all.

New in version 1.2.1

  • Add alignment buttons (left, center, right).
  • Cleanup UI.

New in version 1.1.0

  • Remember margin sizes: Center-Pages now remembers the margin sizes, so that you have to set them only once for each website.

  • Use simpler method to apply margins: Center-Pages now uses a simpler less conflicting method to apply the margins.

Manifest V2 Add-on
By:
Felix Meyer-Wolters
Daily users:
378 -3
Rating:
4.36
(25)
Version:
1.2.1 Last updated: 2020-10-02
Version code:
5109019
Creation date:
2018-03-17
Risk:
Moderate risk impact Low risk likelihood
Permissions:
  • activeTab
Size:
20.29KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Data ingested on:
2025-07-13

Other platforms

Center Pages (v1.2.1)
526 3.33 (12)

User reviews

Thank you! This has solved having some sites only load on the left of the ultrawide screen. Also solves a sore neck!
by Di*****, 2025-01-23

Insanely good add-on for wide or large screens. Helps me keep content nice and centered. There are a small number of sites where a few elements are buggy, but I can't blame the dev. It works pretty great across tons of different sites.
by GB*****, 2024-06-05
View all user reviews ›

Extension safety

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Center Pages requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Center Pages has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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