Last updated: March 13, 2026
Best CSS Inspector Chrome Extensions (1970)
We compared popular CSS inspector tools to help you find the best one for viewing and editing styles in the browser.
Short on time? Here's our top pick:
Frontend Hero is our recommendation because it shows CSS styles that other tools miss (like :hover states), lets you edit in real-time, and includes 10 more developer tools.
Get Frontend HeroQuick Comparison
| Extension | Bonus Tools | Best For |
|---|---|---|
| 1. CSS Peeper | Color palette, asset viewer | Designers |
| 2. Frontend HeroOur Pick | Font detector, color picker, screenshots + 7 more | Professional developers |
| 3. VisBug | Visual editor, guides, accessibility | Visual experimentation |
| 4. Pesticide | None | Layout debugging |
| 5. CSS Viewer | None | Quick lookups |
| 6. WhatFont | Font service detection | Font identification |
| 7. Web Developer | HTML validation, cookies, forms | All-around debugging |
| 8. CSSViewer | None | Occasional use |
Quick Comparison
Color palette, asset viewer
Best for: Designers
Font detector, color picker, screenshots + 7 more
Best for: Professional developers
Visual editor, guides, accessibility
Best for: Visual experimentation
None
Best for: Layout debugging
None
Best for: Quick lookups
Font service detection
Best for: Font identification
HTML validation, cookies, forms
Best for: All-around debugging
None
Best for: Occasional use
Detailed Reviews
1. CSS Peeper
A visual CSS inspector designed for designers. CSS Peeper pioneered the concept of viewing styles in a clean panel without digging through DevTools code.
Key Features:
- Clean visual style panel
- Color palette extraction
- Asset viewing (images, fonts)
- Contrast accessibility checker
- Export styles to Figma/Sketch
- Smart Inspector for shadows and effects
Pros:
- +Beautiful, designer-friendly interface
- +Quick color and asset extraction
- +Accessibility contrast checking
Cons:
- -Cannot edit CSS in real-time
- -Limited to viewing, not modifying
- -Some features require premium
Verdict:
Excellent for designers who want to quickly view styles without touching DevTools, but developers may need more editing capabilities.
2. Frontend HeroOur Pick
A comprehensive CSS Scanner that shows all styles including media queries, pseudo-classes like :hover, and lets you edit them in real-time. Part of an 11-tool developer suite.
Key Features:
- Full CSS inspection with media queries
- Pseudo-class styles (:hover, :focus, :active)
- Real-time CSS editing
- Copy styles in CSS or Tailwind format
- Font detection across entire page
- Color palette extraction
- Element screenshot capture
- Tailwind class conversion
Pros:
- +Shows pseudo-class styles other tools miss
- +Real-time editing, not just viewing
- +10 additional tools included
- +Outputs Tailwind classes directly
Cons:
- -One-time purchase ($59) vs free alternatives
- -May be more than you need for simple inspection
Verdict:
The most complete CSS inspection tool available. See styles that other inspectors miss, edit them live, and get 10 more developer tools included.
3. VisBug
An open-source Google Chrome Labs project that brings design-tool-like editing to any webpage. Think 'Figma for the browser.'
Key Features:
- Visual drag-and-drop editing
- Guides and measurements
- Margin/padding visualization
- Color picker
- Typography controls
- Accessibility inspection
Pros:
- +Free and open source (Google project)
- +Intuitive visual editing
- +Great for quick mockups and testing
Cons:
- -Changes are temporary (not saved)
- -Learning curve for all features
- -Can be slow on complex pages
Verdict:
Perfect for designers who want to visually experiment with layouts, but remember changes don't persist.
4. Pesticide
A simple extension that outlines every element on the page with colored borders, making it easy to see the box model and layout structure.
Key Features:
- One-click element outlining
- Color-coded depth levels
- Shows box model visually
- Minimal, lightweight
Pros:
- +Extremely simple to use
- +Instant layout visualization
- +No learning curve
Cons:
- -Very limited functionality
- -No style inspection
- -Just for debugging layouts
Verdict:
Great for quickly debugging layout issues, but you'll need another tool for actual CSS inspection.
5. CSS Viewer
A lightweight CSS property viewer that shows styles in a floating tooltip as you hover over elements.
Key Features:
- Hover-to-view CSS properties
- Floating panel display
- Quick property copying
- Minimal interface
Pros:
- +Very lightweight
- +Instant hover inspection
- +Simple and fast
Cons:
- -Limited to basic properties
- -No editing capabilities
- -Dated interface
Verdict:
Good for quick property lookups, but lacks the depth of more comprehensive tools.
6. WhatFont
Primarily a font identifier, but also shows basic CSS properties for typography including size, weight, line-height, and color.
Key Features:
- Font family detection
- Font size and weight
- Line height and color
- Google Fonts integration
- Typekit detection
Pros:
- +Best-in-class font detection
- +Shows font service (Google, Typekit)
- +Clean, simple interface
Cons:
- -Limited to typography CSS only
- -No layout or box model inspection
- -Single-purpose tool
Verdict:
The go-to tool for font identification, but you'll need additional extensions for full CSS inspection.
7. Web Developer
A comprehensive toolbar with CSS, HTML, and JavaScript debugging tools. A veteran extension that's been around since the Firefox era.
Key Features:
- Disable/enable CSS
- View computed styles
- Outline elements
- Edit CSS in browser
- Validate HTML/CSS
- Cookie management
Pros:
- +Feature-rich toolbar
- +Trusted, long-standing tool
- +Many debugging utilities
Cons:
- -Interface feels dated
- -Overwhelming number of options
- -Not focused on CSS inspection
Verdict:
A swiss-army knife for web debugging, but the CSS inspection is just one of many features in a crowded interface.
8. CSSViewer
A simple CSS property viewer showing basic styles like fonts, colors, and dimensions in a compact popup.
Key Features:
- Click-to-view CSS
- Compact popup display
- Basic property listing
- Copy individual values
Pros:
- +Simple and lightweight
- +Quick to use
- +No bloat
Cons:
- -Very basic functionality
- -No computed styles
- -Limited property display
Verdict:
Fine for occasional quick checks, but serious CSS work requires more capable tools.
Frequently Asked Questions
DevTools is powerful but complex. CSS inspector extensions provide a cleaner, more focused interface for viewing styles without the overwhelming DevTools panel. Some extensions like Frontend Hero also show pseudo-class styles (:hover, :focus) that are harder to access in DevTools.
No, all CSS inspector extensions only make temporary changes that disappear on page refresh. To make permanent changes, you need to update your actual CSS files. The extensions are for inspection and experimentation, not production editing.
Most basic CSS inspectors struggle with Shadow DOM encapsulation. More advanced tools like Frontend Hero are designed to inspect Shadow DOM elements, but always test with your specific use case.
Frontend Hero is the only tool that can convert inspected CSS directly to Tailwind classes. Other inspectors show raw CSS, requiring manual conversion to Tailwind utilities.
Reputable CSS inspectors only read page styles locally and don't transmit data. However, always check extension permissions before installing. Avoid extensions that request unnecessary access to browsing history or personal data.
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