Advent of Code Charts
Inject charts in your private leaderboard page for Advent of Code - see https://github.com/jeroenheijmans/advent-of-code-charts
854 users
IP Whois
View info about IP, DNS records, SSL, country flag, domain whois, location, stats and more of any website.
852 users
Disable CSP for a minute
Temporarily disables CSP for the current tab's website. Right click on the page, then disable CSP.
849 users
show-my-ip
This add-on allows you to view your IP address from your browser without having to navigate to sites like https://www.whatismyip.com/ Furthermore, as this add-on is open source, you don't need to be worried about your privacy.
846 users
PageSpeed Insights
Open PageSpeed Insights to analyze the web page on the current opened tab.
829 users
Aionda Mail (TrashMail): Disposable Temp Mail
Create free disposable email addresses with Aionda Mail (formerly TrashMail). Paste them directly into forms to protect yourself from spam. Zero-knowledge login and optional MITM protection included.
824 users
LocalStorage Editor
Add, edit, copy, remove, export and import local- and session- storage data
824 users
CustomCSS Injector
- Apply any CSS rules for any websites, including iframes. - Whitelist and Blacklist functionality - Apply CSS rules to specific URLs, Domains or Globally - Syntax highlighting & line numbers - Update without page refresh
823 users
Simple Link Checker
Redirect Link Checker will check all links on your page to find broken and redirect links
822 users
Userchrome Toggle Extended
This extension allows you to toggle userchrome.css styles on-the-fly with buttons and hotkeys. You'll be able to switch up to six styles
818 users
Resize Window & Viewport
Resize browser window or viewport to desired screen widths. Firefox's Responsive Design Mode (Ctrl + Shift + M) is great for mobile devices emulation.
817 users
TanStack Query DevTools
Real-time TanStack Query devtools in your browser. Inspect queries, mutations, and cache — with zero bundle impact.
807 users
Quick Accept-Language Switcher
Provides a quick way of changing the HTTP Accept-Language header so you can view and test websites with a different locale.
805 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.
804 users
Sif — 亚马逊Listing和广告优化
Sif对亚马逊站内流量实现无死角全覆盖，精准查询每个产品的自然搜索、PPC广告、Deal(活动)、搜索推荐和关联流量，并锁定每个产品的主要流量词和精准长尾词，帮助卖家洞察不同竞品、不同变体的流量来源，据此优化自己的Listing和调整竞争策略
797 users
