Tuello is a comprehensive Chrome extension designed for web developers, QA engineers, and testers. It provides a powerful suite of tools to interact with, analyze, and test the websites you visit.
Core Features
🔄 HTTP Request Interception & Mocking
- Intercept and modify HTTP requests (XHR and Fetch) in real-time
- Mock API responses for testing and development purposes
- Record HTTP traffic and replay it later
- Profile management: Create, switch, and organize multiple mock configurations
- Deep mock matching: Configure matching depth for nested response objects
- Export recordings as a ready-to-use JavaScript library to deploy demo or offline versions of your web applications
- Tags system: Extract and display specific JSON values directly on the page via customizable lightboxes
🎬 Browser Action Recording & Replay (Spy Mode)
- Record user interactions: clicks, keyboard inputs, navigation, and scrolling
- Capture screenshots (Alt+Shift+S) with annotations during recording
- Add comments (Alt+Shift+C) to document your test scenarios
- Record by image (Alt+Shift+I): Locate elements using visual matching
- Drag & drop to reorder recorded actions
- Replay recorded sessions with visual comparison to detect UI regressions
- Synchronize HTTP mocks during replay for consistent test results
- Full iframe support for complex web applications
🔍 HTML Element Search & Highlighting
- Search for elements using CSS selectors or XPath expressions
- Highlight matching elements directly on the page
- Display custom attributes (class, id, text content, etc.)
- Real-time element counting and navigation
📡 Resource Tracking
- Track HTML tags, attributes (e.g., aria-labelledby), or text content
- Monitor specific HTTP requests and responses (e.g., analytics tags like XITI)
- Distinguish between page load and click-triggered resources
- Visual highlighting of tracked elements as you navigate
- Support for regular expressions for advanced matching
📋 JSON Tools
- JSON Formatter: Beautify and validate JSON with detailed error reporting
- JSON Viewer: Visualize JSON streams from the page as interactive trees
- JSON5 support for flexible parsing
Additional Features
- Interactive guided tours: Step-by-step onboarding for each feature
- Mouse coordinates display: Show cursor position on the page
- Dark mode: Full dark theme support
- Multilingual: English and French interfaces
- Context menus: Quick access via right-click (JSON Viewer, Screenshots, Pause/Resume)
- LZ4 compression: Automatic data compression for large recordings
- Verbose mode: Detailed logging for debugging
- Full import/export: Save and restore your entire Tuello configuration
Performance & Control
Tuello can be completely disabled while browsing and activated only when needed—ensuring zero impact on your regular browsing experience.
Tuello is fully free. You can thank the author by making a small donation
