A minimal Firefox extension for monochrome browsing. Supports dark theme and grayscale only on selected hostnames.
[Notice: Doesn't work at mozilla pages]
- By:
- xpmn
- Rating:
- 4.45 (11)
- Version:
- 0.6.2 (Last updated: 2024-02-02)
- Version code:
- 5686684
- Creation date:
- 2020-06-21
- Permissions:
- tabs
- storage
- Size:
- 18.09K
- URLs:
- Website
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- 11 hours ago
Manifest V2
User reviews
Grayscale Bro is praised for effectively applying grayscale mode and allowing selective site control, providing a mostly smooth user experience. However, users frequently report problems with fullscreen videos and standalone images, including black screens and partial image visibility. Some also note color conversion inaccuracies on certain pages, suggesting improvements in grayscale processing would benefit the add-on.
Pros
- Effectively converts web pages to grayscale as intended.
- Allows users to enable grayscale mode on selected websites only.
- User-friendly and works well across most websites.
- Good control features for managing grayscale application.
Cons
- Issues with fullscreen videos or images showing a black screen while audio continues.
- Problem with images displayed alone where only the bottom half is visible, top half scrolls off-screen.
- Color conversion inaccuracies leading to unexpected color changes instead of proper grayscale on some pages.
Recent reviews
Tried a couple different greyscale extensions, but this is the one. Perfect.
by mijji, 2025-01-16
by Firefox user 18639262, 2024-10-15
It incorrect work.
RGB色数値の計算・処理が正しくない。
例
灰色→オレンジ色になる
明るい灰色→白になる
ページの下になにもない大きい空間が生まれる
「明度」ではなく「輝度」の数値をグレースケールに使ってください。
良い点:
「このページに有効」がある
by IWD1, 2024-10-11
Extension safety
Risk impact
Grayscale Bro requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
Grayscale Bro is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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