Web development happens inside the browser as much as inside an editor, so a handful of well-chosen extensions remove friction from everyday debugging. The picks below cover screenshots, color and font inspection, tech-stack detection, JSON formatting, React internals and clearing cache, without asking for more browser access than the job needs.
Inspecting pages and components
React Developer Tools adds a panel to Chrome DevTools that shows the component tree, props and state, which beats console.log for tracing why a component re-rendered. Wappalyzer identifies the frameworks, CMS and analytics tools behind any site you visit, useful when reviewing a competitor's build or debugging a client's stack.
Color, fonts and full-page screenshots
ColorZilla's eyedropper picks the exact color of any pixel on a page and gives you the hex code instantly. WhatFont shows the font family, size and weight under your cursor. GoFullPage captures an entire scrollable page as one image, which is faster than stitching screenshots together for a bug report or design review.
JSON, dark mode and cache during testing
JSON Formatter pretty-prints raw JSON responses so API output is readable without pasting it into another tool. Dark Reader applies a dark theme to any site that lacks one, easier on the eyes during long sessions. Clear Cache wipes cache and cookies for the current tab, useful when testing changes without wiping every logged-in session.