Adjust Page Brightness

Control your browser's global screen brightness to use sites that do not support the native dark theme

As of June 2026, Adjust Page Brightness has 100,000 users and a 4.01/5 rating from 187 reviews in the Accessibility category.

Usersno change0%
100.0K
100,000
Ratingno change0%
4.01
187 reviews
Reviewsup 3.9 percent+3.9%
187
Version
0.3.9
Manifest V3
90-day change · In the last 90 days this extension 1 version update.

History

5 snapshots

Tracking since Apr 19, 2026.

101.2K100.0K98.8KApr 19, 2026Jun 18, 2026
View as table
DateUsersRatingReviewsVersion
Apr 19, 2026100.0K4.011800.3.8
May 8, 2026100.0K4.011810.3.8
May 16, 2026100.0K4.011840.3.8
May 18, 2026100.0K4.011840.3.9
Jun 18, 2026100.0K4.011850.3.9
Now100.0K4.011870.3.9

Permissions & access

Permissions
activeTabscriptingstoragealarmsidle
Host access
<all_urls>

Screenshots

Adjust Page Brightness screenshot 1Adjust Page Brightness screenshot 2Adjust Page Brightness screenshot 3

About

This extension reduces or increases the screen brightness level for both daytime and nighttime periods based on user-defined values. It helps the websites that do not support the native dark theme. Also, it can increase the brightness of websites that are too dark. It reduces the eyestrain while reading documents online when dark mode is not supported. The extension offers two different values for daytime and nighttime duration to enhance usability. 

Features:
1. Control the darkness level of all websites or just a single hostname
2. You can increase or decrease the brightness level of a website
3. Supports keyboard shortcuts for every action.
4. You can disable the extension on a single website or entirely
5. Control the brightness level from 0% (completely dark) to 120% (20% brighter than the original)
6. Supports two different methods to decrease the brightness level.

Notes: 
1. By setting the brightness level to 100%, the extension does not affect browser tabs (does not inject any CSS styling)
2. It is recommended to configure the start time for both daytime and nighttime. By default, daytime starts at 08:00, and nighttime starts at 19:00.
3. By adding a website to the exception list, brightness control is turned off for this website. You can use this feature to turn off the extension on websites that support native dark mode.
4. This extension does not reduce the screen brightness when printing a webpage. There is a CSS selector that only affects "screen" type displays.

What is the difference between this extension and other dark mode extensions (e.g. "Dark Reader™" or "Turn Off the Lights™" (I do not own these two extensions))?
These extensions manipulate the styling of all elements by using custom stylesheets. They convert the light theme to dark. This extension only injects a filter to reduce or increase the original brighness. So it does not perform any resource-intensive operations and does not alter the website's styling.

Technical

Version
0.3.9
Manifest
V3
Size
119KiB
Min Chrome
88
Languages
12
Featured
Yes

Metadata

ID
bcjiagkgnilmcngacjlfhmpdmbhbjcah
Developer ID
u998790a42d49632e0728e5a526305904
Developer Email
[email protected]
Created
Feb 13, 2018
Last Updated (Store)
May 9, 2026
Last Scraped
Jun 18, 2026
Website
Privacy Policy

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Data sourced from the Chrome Web Store · last verified Jun 18, 2026.