ColorZilla
Advanced Eyedropper, Colour Picker, Gradient Generator and other colourful goodies
Extension to track JS Errors and HTTP Requests
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Throw Catcher – Monitor Website Activity in Real Time
Throw Catcher is a lightweight Chrome extension designed to help developers and analysts understand what’s happening behind the scenes of any webpage.
With a simple and intuitive interface, Throw Catcher tracks and displays key runtime metrics in real time:
Network Requests – Monitor how many HTTP requests the page performs
DOM Mutations – Track changes in the page structure dynamically
JavaScript Errors – Count uncaught exceptions and runtime errors
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Advanced Eyedropper, Colour Picker, Gradient Generator and other colourful goodies
The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
Spoofs & Mimics User-Agent strings.
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
Adds a toolbar button with various web developer tools.
Pick colors from any website.