CSS Viewer Firefox

CSS Viewer

CSS Viewer allows you to select any block on the page and instantly get the CSS for it and all its subelements.

Features & Capabilities

CSS Viewer is a Firefox extension that helps you quickly extract styles from web pages.

What it can do:

  • Select any element on the page with visual highlighting;
  • Collection of CSS rules applied to the selected block and its children;
  • Taking into account inline styles (style="") inside the selected block;
  • View the result in a convenient extension window;
  • Copy CSS to clipboard or download to .css file;
  • Automatic interface localization: Russian/English according to the browser language.

The extension is intended for developers, layout designers and anyone who analyzes website styles.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Forestier
Daily users:
12 2
Rating:
5.00
(1)
Version:
1.0.0 Last updated: 2026-03-01
Version code:
6162764
Creation date:
2026-02-26
Risk:
High risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Content scripts matches:
  • <all_urls>
Size:
17.18KB
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-03
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Forestier
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/css_viewer/

User Reviews

Удобное чистое решение.
by Fi*****, 2026-05-14
View all user reviews ›

Is CSS Viewer Safe?

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.

CSS Viewer 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.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • 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 Add-ons Store, 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.

CSS Viewer 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.
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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