Last updated: March 13, 2026
Best Developer Tools Chrome Extensions (1970)
The essential Chrome extensions every frontend developer should know. From all-in-one toolkits to framework-specific debuggers.
Short on time? Here's our top pick:
Frontend Hero is our recommendation for an all-in-one toolkit. It combines 11 essential tools (CSS inspector, color picker, font explorer, screenshot, Tailwind converter, and more) so you don't need a dozen separate extensions.
Get Frontend HeroQuick Comparison
| Extension | Bonus Tools | Best For |
|---|---|---|
| 1. Web Developer | Dozens of utilities in toolbar | Power users |
| 2. Frontend HeroOur Pick | 11 integrated tools | Frontend developers |
| 3. Wappalyzer | Technology database | Tech stack research |
| 4. React Developer Tools | Performance profiler | React developers |
| 5. Vue.js Devtools | State management debugging | Vue developers |
| 6. JSON Viewer | None | API development |
| 7. Lighthouse | PWA auditing | Performance optimization |
| 8. Window Resizer | Device presets | Responsive testing |
Quick Comparison
Dozens of utilities in toolbar
Best for: Power users
11 integrated tools
Best for: Frontend developers
Technology database
Best for: Tech stack research
Performance profiler
Best for: React developers
State management debugging
Best for: Vue developers
None
Best for: API development
PWA auditing
Best for: Performance optimization
Device presets
Best for: Responsive testing
Detailed Reviews
1. Web Developer
The original Swiss Army knife for web developers with over 1 million users. Adds a toolbar with dozens of tools for disabling JavaScript, viewing CSS, manipulating cookies, resizing windows, and much more.
Key Features:
- Disable JavaScript, CSS, images
- View and edit cookies
- Outline elements on page
- Resize browser window
- View source code
- Form manipulation tools
- Image analysis tools
Pros:
- +Incredibly comprehensive feature set
- +Trusted by millions of developers
- +Free and open source
Cons:
- -Interface feels dated
- -Can be overwhelming for new users
- -Some features duplicate DevTools
Verdict:
A classic that's been essential for web developers for years. Still useful but the interface hasn't evolved much.
2. Frontend HeroOur Pick
A modern all-in-one toolkit built specifically for frontend developers. Combines 11 essential tools including CSS scanner, color picker, font explorer, screenshot capture, Tailwind converter, and more.
Key Features:
- CSS Scanner with hover/focus state support
- Color Picker with Tailwind output
- Font Explorer for all page fonts
- Element Screenshot tool
- Tailwind Scanner and Converter
- Page Ruler with snapping
- Asset Spy for image download
- Console Spy for debugging
- Color Palette Explorer
- Text Edit Mode for content preview
Pros:
- +11 focused tools in one extension
- +Modern, intuitive interface
- +Built for today's frontend workflows
- +No conflicts between tools
Cons:
- -One-time purchase ($59) vs free alternatives
- -Focused on frontend, not backend debugging
Verdict:
The professional choice for frontend developers who want modern, integrated tools without extension conflicts. One purchase, lifetime access.
3. Wappalyzer
Instantly identify the technologies used on any website. Detects CMS platforms, frameworks, analytics tools, and more. Essential for competitive research and learning.
Key Features:
- Detect CMS (WordPress, Shopify, etc.)
- Identify JavaScript frameworks
- Find analytics and marketing tools
- See hosting and CDN providers
- View e-commerce platforms
- Export technology data
Pros:
- +Instant technology detection
- +Great for competitive research
- +Continuously updated database
Cons:
- -Can't detect all technologies
- -Some features require paid plan
- -Detection not always 100% accurate
Verdict:
Essential for understanding what technologies other sites use. Great for research and learning but not a development tool per se.
4. React Developer Tools
The official React debugging extension from Meta. Adds React-specific panels to Chrome DevTools for inspecting component trees, props, state, and hooks.
Key Features:
- Inspect component hierarchy
- View and edit props
- Monitor state changes
- Debug hooks
- Performance profiling
- Highlight component updates
Pros:
- +Official tool from React team
- +Deep integration with React
- +Essential for React development
Cons:
- -Only useful for React projects
- -Can slow down on large apps
- -Learning curve for profiler
Verdict:
Non-negotiable for React developers. If you build with React, you need this extension.
5. Vue.js Devtools
The official debugging extension for Vue.js applications. Inspect Vue components, Vuex/Pinia state, and track events in your Vue applications.
Key Features:
- Component inspector
- Vuex/Pinia state management
- Event tracking
- Performance timeline
- Edit component data
- Router debugging
Pros:
- +Official Vue.js tool
- +Supports Vue 2 and Vue 3
- +Great Pinia integration
Cons:
- -Only useful for Vue projects
- -Can be slow on large apps
- -Separate versions for Vue 2/3
Verdict:
Essential for Vue developers. Provides the deep inspection capabilities you need for Vue applications.
6. JSON Viewer
Makes raw JSON data readable directly in the browser. Automatically formats and syntax-highlights JSON responses, making API debugging much easier.
Key Features:
- Auto-format JSON in browser
- Syntax highlighting
- Collapsible tree view
- Search within JSON
- Copy values easily
- Raw/formatted toggle
Pros:
- +Makes JSON instantly readable
- +Essential for API work
- +Lightweight and fast
Cons:
- -Single-purpose tool
- -Some sites block it
- -Limited editing capabilities
Verdict:
A simple but essential tool for anyone working with APIs. Makes JSON responses actually readable.
7. Lighthouse
Google's official tool for auditing web page quality. Generates reports on performance, accessibility, SEO, and best practices with actionable recommendations.
Key Features:
- Performance scoring
- Accessibility audit
- SEO analysis
- Best practices check
- PWA validation
- Actionable recommendations
Pros:
- +Comprehensive quality auditing
- +Official Google tool
- +Industry-standard metrics
Cons:
- -Built into DevTools already
- -Scores can vary between runs
- -Can be slow on complex pages
Verdict:
Essential for performance optimization, though it's also built into Chrome DevTools. The extension version offers easier access.
8. Window Resizer
Quickly resize your browser window to test responsive designs at different screen sizes. Includes presets for common devices and allows custom sizes.
Key Features:
- Preset device sizes
- Custom size configurations
- Quick size switching
- Save favorite sizes
- Rotate for portrait/landscape
Pros:
- +Quick responsive testing
- +Customizable presets
- +Simple and focused
Cons:
- -DevTools has similar feature
- -Limited beyond resizing
- -Single-purpose tool
Verdict:
Useful for quick responsive checks, though Chrome DevTools' device mode offers more comprehensive testing.
Frequently Asked Questions
Less is more. Each extension consumes memory and can slow down your browser. Focus on a few essential tools rather than dozens of single-purpose extensions. All-in-one tools like Frontend Hero can replace 5-10 separate extensions, reducing overhead and conflicts.
Yes, extensions can skew performance metrics. When running Lighthouse or other performance tests, use an incognito window with extensions disabled, or create a separate Chrome profile for testing with no extensions installed.
Extensions have access to webpage content, so only install from trusted sources. Check permissions before installing - a color picker shouldn't need access to your browsing history. Prefer extensions with large user bases and regular updates.
Chrome DevTools is built into the browser and offers deep debugging capabilities (Network, Console, Elements, etc.). Extensions add functionality on top of or alongside DevTools, often providing more specialized or user-friendly interfaces for specific tasks.
Yes, the framework-specific DevTools are essential. They provide component inspection and state management debugging that generic tools can't offer. They're maintained by the framework teams and deeply integrated with the framework internals.
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