Best Developer Extensions 2026

Frequently Asked Questions

What Chrome extensions should every web developer install?▾

React Developer Tools, Redux DevTools, and Vue DevTools are framework-specific essentials. Web Developer (Chris Pederick) adds dozens of page analysis tools. JSON Formatter makes API responses readable. Accessibility Insights identifies WCAG issues. ColorZilla picks colors from any page element. Lighthouse (built into Chrome DevTools) audits performance, SEO, and accessibility. VisBug lets you visually edit any webpage.

What is the Web Vitals Chrome extension?▾

Web Vitals (by Google) shows real-time Core Web Vitals measurements (LCP, INP, CLS) for the page you are visiting - letting developers measure performance impacts of code changes immediately without running a formal Lighthouse audit. It is an essential tool for developers optimizing page performance, showing the actual user experience metrics Google uses for ranking signals.

Can Chrome extensions debug production issues?▾

Yes - developer extensions like React DevTools work on production sites without needing source maps for basic component tree inspection. Network monitoring extensions capture API requests and responses. Lighthouse audits production pages for real-world performance. For deeper production debugging with source maps and error tracking, Sentry's browser SDK and your application's error monitoring tools are more appropriate.

What are the best developer Chrome extensions?▾

Useful ones include framework-specific debuggers like React Developer Tools and Vue Devtools, accessibility checkers like axe DevTools and WAVE, performance and Lighthouse-related tools, JSON viewers and formatters, color pickers and design inspectors, and API and network inspection aids. The best set depends on your stack and work, front-end developers benefit from framework devtools and design inspectors, while those working with APIs value JSON and network tools. These extensions augment the browser's built-in DevTools with specialized capabilities, so choose based on the technologies you work with and the debugging and testing tasks you do most often in the browser.

Do I need developer extensions if browsers have DevTools?▾

Built-in DevTools are powerful and cover a lot, inspecting elements, debugging, network, and performance, but developer extensions add specialized capabilities DevTools lack, such as framework-specific debugging (seeing React or Vue component state), automated accessibility auditing, and particular design or API inspection tools. For general web development, DevTools plus a few targeted extensions for your stack cover most needs well. You do not need many, but extensions like React Developer Tools or an accessibility checker provide focused capabilities that meaningfully help with specific tasks, complementing rather than replacing the browser's native developer tools.

What Chrome extensions help with web accessibility testing?▾

axe DevTools and WAVE are among the most popular accessibility testing extensions, scanning pages for accessibility issues against standards like WCAG and highlighting problems with guidance to fix them. Lighthouse, built into Chrome DevTools, also includes accessibility scoring. These automated tools catch many common issues, missing labels, poor contrast, structural problems, quickly, though they do not catch everything, so combining them with manual testing and screen reader checks gives the fullest picture. For developers building accessible sites, an accessibility extension is a valuable part of the workflow, providing fast automated checks that surface many issues to address during development.