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.
3 129 användare
Print for Firefox
Print the current page you see with one single click. And that for all kinds of photo printing, poster printing, brochure printer, newspaper printing, business cards and more.
3 108 användare
CookieManager - Cookie Editor
Edit cookies related to the current page and all its sub-frames right from a popup
3 095 användare
Omnibug
The leading browser extension for analytics and marketing technology testing and debugging
3 022 användare
ffCK Overlays
Right-click any element to remove it. Inspired by the Chrome extension "F*ck Overlays".
3 018 användare
Google Analytics Debugger
Prints useful information to the JavaScript console by enabling the debug version of the Google Analytics Javascript. P.S: this add-on is migrated from Chrome store.
3 015 användare
Try XPath
This add-on displays the result of evaluating XPath expression or CSS selector.
2 866 användare
webhint
Check for best practices and common errors with your site's accessibility, speed, security and more.
2 709 användare
HackTools
Hacktools, is a web extension facilitating your web application penetration tests, it includes cheat sheets as well as all the tools used during a test such as XSS payloads, Reverse shells to test your web application.
2 707 användare
dataslayer
Debug and test tag management (Google Tag Manager, Adobe Launch / DTM, Tealium) and analytics (Google Analytics, Adobe Analytics) implementations from within Developer Tools.
2 693 användare
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.
2 659 användare
Yandex Wordstat Assistant
Расширение, позволяющее значительно ускорить сбор фраз с помощью сервиса подбора слов Яндекс (wordstat)
2 605 användare
SEO Analysis & Website Review by WooRank
Instant SEO analysis and website reviews for SEO, mobile, usability and social media. The freshest data when and where you want it.
2 561 användare
Pesticide
This extension inserts the Pesticide CSS into the current page, outlining each element to better see placement on the page.
2 559 användare
