CSS Viewer by Forestier
CSS Viewer allows you to select any block on the page and instantly get the CSS for it and all its subelements.
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About this extension
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.
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.
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Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Version
- 1.0.0
- Size
- 17.18 KB
- Last updated
- a month ago (Feb 26, 2026)
- Related Categories
- License
- The Unlicense
- Version History
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