LocalStorage Editor
Add, edit, copy, remove, export and import local- and session- storage data
778 users
Website and IP address blocker
Block Websites and IP address. Additional feature: Option to only block the homepage.
775 users
Penetration Testing Kit
Attention! This version is no longer supported. Use /firefox/addon/owasp-penetration-testing-kit/ extension instead.
772 users
Scrum for Trello
Scrum for Trello adds functionality to the awesome trello.com for use in Scrum projects. Add estimates or record time-spent directly on Trello cards. Shows sums at the top of each list and the top right corner of each board.
771 users
Save Website as Image
Save a full snapshot of a website as a single or a series of images
765 users
GitKraken Browser Extension
Track your pull requests for GitHub, GitLab, Azure DevOps, and BitBucket. Open repos, commits, PRs, and branches in VS Code with GitLens or the GitKraken Desktop.
761 users
Proxy Checker
Check the quality of your proxies' IPs in bulk.
754 users
JSON Beautifier & Editor
Display JSON objects by transforming them into Syntax editable highlighted HTML
752 users
百度药丸 Baidu Capsule1
使用更纯净的百度 1.屏蔽百度广告推广 2.阻止百度追踪 3.支持居中显示治愈偏头痛
752 users
File Icon for GitHub, GitLab and Bitbucket
A Firefox Add-On which gives different filetypes different icons to GitHub, Gitlab, Bitbucket, gitea and gogs.
750 users
JPEG XL viewer
Displays JPEG XL images.
750 users
Content Security Policy (CSP) Generator
Automatic Content Security Policy (CSP) Generator. Generate a Content Security Policy header in minutes on any website. Built by https://csper.io
741 users
HAR/JSON viewer
Embedded HAR/JSON viewer. Visualizes HTTP Archive (HAR) files opened locally or online. Also features JSON tree view.
741 users
Quora Login Bypass
Lets you Bypass Quora Login. A Quora Blog shared this trick/hack so that knowledge can be shared without restriction. If you are logged in, it won't do anything. But say you are not logged in (or using private window), then this comes handy.
738 users
HackBar
A HackBar for new firefox. This addon is written in webextension and alternatives to the XUL version of original Hackbar.
734 users
GhostText
Use your text editor to write in your browser. Everything you type in the editor will be instantly updated in the browser (and vice versa).
733 users
InlineDisposition Reloaded
InlineDisposition Reloaded changes the disposition type of "Content-Disposition" response headers from "attachment" and "file" to "inline"
733 users
SiteAnalyzer SEO Tools
SiteAnalyzer SEO Tools is a browser extension providing a set of tools for analyzing SEO indicators of web site, technical audit (links, images, meta tags, content, indexing, etc.), URL analysis and correction of SEO optimization errors.
726 users
Request Interceptor
Intercept HTTP and HTTPS Requests. Add custom rules to modify request/response headers, block/redirect requests, modify query params. Example Usage: This extension can be used to block all ads having url (*/ad.x.com/*) by creating rules
725 users
Bug Magnet
Right-click context menu to help with exploratory testing
717 users
Favicon Detector
A simple way to detect website icons.
716 users
Toggle Cache
Disables or enables the browser cache.
715 users
Reading List/ Reading History Exporter
Export your lists and reading history to CSV, HTML, JSON, or PDF.
711 users
Measure Everything
Element distance measurement tool.
700 users
RDS bar (seo: pr, dmoz, alexa, seomoz)
RDS Bar is a handy tool for quick analysis of website and page SEO indicators, designed for webmasters and optimizers. And also with a number of useful features for ordinary users.
699 users