# Adjust Screen Brightness

> Control your browser's global screen brightness

Canonical page: [https://chrome-stats.com/d/adjust-screen-brightness](https://chrome-stats.com/d/adjust-screen-brightness)

## Overview

- **ID:** `adjust-screen-brightness`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Joue
- **Category:** appearance,tabs
- **Daily users:** 7,318
- **Weekly downloads:** 274
- **Rating:** 4.29 / 5 (51 ratings)
- **Version:** 0.3.9
- **Last updated:** 2026-05-09
- **First published:** 2018-02-13
- **Size:** 125 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/adjust-screen-brightness/)
- **Website:** [https://webextension.org/listing/screen-brightness.html](https://webextension.org/listing/screen-brightness.html)

## Description

The **Adjust Screen Brightness** Chrome extension provides an easy and customizable way to control your browser's global screen brightness. By setting different brightness levels for daytime and nighttime, users can reduce eye strain and improve reading comfort while surfing or working online. 

This extension allows you to define start times for both periods, ensuring seamless transitions between your preferred brightness settings throughout the day. You can even choose to keep daytime brightness at 100% if desired. Ideal for those who spend long hours reading or working in front of a screen, it helps protect your eyes with minimal effort.

## Rankings

- #933 — Overall
- #69 — Tabs
- #142 — Appearance
- #8 — screen
- #25 — screen time
- #32 — screensaver

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `storage`
- `alarms`
- `idle`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users broadly praise Adjust Screen Brightness for making nocturnal browsing easier by dimming or brightening pages, with particular appreciation for per site controls and white listing. The extension is described as simple, lightweight, and effective for night viewing, videos, and even battery friendly adjustments by increasing brightness beyond the built in limit. The main caveat is that it can break or fail to render on some sites, and on some pages the shader does not apply immediately or loads inconsistently. Overall, it is a reliable, user friendly tool for most sites, though not perfect on every page.

### Pros

- Improves night time viewing and reduces eye strain by dimming content and enabling brightness beyond the built in limit when needed.
- Offers per site customization and whitelisting with adjustable brightness levels and timing.
- Simple, lightweight, and user friendly, making it easier to use than more complex alternatives.
- Generally reliable and works on most websites for everyday use.

### Cons

- Page rendering issues on some sites; can break pages or make content unreadable when enabled.
- Occasional reliability issues; sometimes the shader fails to load or does not apply immediately on certain pages.

## Similar extensions and apps

- [Screen dimmer](https://chrome-stats.com/d/screen-dimmer) — 24 users
- [Night Mode Pro](https://chrome-stats.com/d/night-mode-pro-w) — 369 users, 3.92 / 5
- [Adjust Screen Color](https://chrome-stats.com/d/adjust-screen-color) — 17 users
- [Adjust Page Brightness – Brightness Controller](https://chrome-stats.com/d/page-brightness-controller) — 4 users
- [Brightness Control](https://chrome-stats.com/d/brightness-control) — 88 users, 5.00 / 5
- [Smart Night Mode](https://chrome-stats.com/d/smart-night-mode) — 12 users, 5.00 / 5
- [Screen Comfort Adjuster](https://chrome-stats.com/d/screen-comfort-adjuster)
- [Simple Dimmer](https://chrome-stats.com/d/simple-dimmer) — 102 users, 4.67 / 5
- [Blue Light Filter](https://chrome-stats.com/d/blue-light-filter-sp) — 26 users
- [Simple Brightness Control](https://chrome-stats.com/d/simple-brightness-control) — 32 users
- [NightShift - ExtensionBuffet](https://chrome-stats.com/d/nightshift-extensionbuffet) — 3 users
- [The Lights Off](https://chrome-stats.com/d/the-lights-off)

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Source: [Chrome-Stats](https://chrome-stats.com/d/adjust-screen-brightness)