webhint
Check for best practices and common errors with your site's accessibility, speed, security and more.
2.661 Benutzer
Basic JSON Formatter
Adds a page action to pretty-print JSON. Unlike similar extensions, this simply pretty-prints it. It doesn't add any kind of viewer, colors, or collapsing. If you want this to work as expected, disable devtools.jsonview.enabled in about:config.
2.643 Benutzer
Merge Windows
Merges the tabs from multiple windows together into one window. Extension won't show context menu item when there aren't more than one window of the same type to merge together. Private windows will only merge with private windows not normal.
2.623 Benutzer
IBM Equal Access Accessibility Checker
A web developer tool that checks web applications for accessibility issues.
2.501 Benutzer
ReCaptcha Solver
Verify Google ReCaptcha V2 automatically with :2Captcha, DeathByCaptcha, ImageTyperz, RuCaptcha, Anti-Captcha, BestCaptchaSolver and EndCaptcha Without API or TOKEN key it won't work!!
2.442 Benutzer
dataslayer
Debug and test tag management (Google Tag Manager, Adobe Launch / DTM, Tealium) and analytics (Google Analytics, Adobe Analytics) implementations from within Developer Tools.
2.411 Benutzer
Try XPath
This add-on displays the result of evaluating XPath expression or CSS selector.
2.409 Benutzer
Chat GPT for Google
See the ChatGPT responses right next to your search engine results. https://extensionchatgpt.com/ See our youtube guide: https://www.youtube.com/watch?v=p9it2NCB3_c
2.376 Benutzer
Pesticide
This extension inserts the Pesticide CSS into the current page, outlining each element to better see placement on the page.
2.368 Benutzer
Resource Override
An extension to help you gain full control of any website by redirecting traffic, replacing, editing, or inserting new content.
2.349 Benutzer
Yandex Wordstat Assistant
Расширение, позволяющее значительно ускорить сбор фраз с помощью сервиса подбора слов Яндекс (wordstat)
2.345 Benutzer
Script Blocker Ultimate (NoScript, Disable JS)
Best Script Blocker for Firefox. (Best in Performance, This addon does NOT track user activities same as others)
2.292 Benutzer
LiveReload - Web extension
Web extension based version of LiveReload. Supports Firefox 57 (Firefox Quantum)
2.292 Benutzer
SEO Analysis und Website Review von WooRank
Sofortige SEO-Analyse und Webseitenbewertungen für SEO, Handy, Nutzerfreundlichkeit und Soziale Medien. Die frischesten Daten, wann und wo immer Sie wollen.
2.289 Benutzer
FB unseen
Blocks the ”seen” feature of the facebook messenger, and your friends will no longer be able to see if you read their messages.
2.280 Benutzer
Fake Data - A form filler you won't hate
Fill form fields on the fly with fake random data. No configuration needed, just double click on each input you want to fill. Has an autolearn feature for unrecognised fields.
2.249 Benutzer
