HTTP Status Reference
A searchable reference of HTTP status codes with names, plain-English meanings and categories. Look up by code or keyword like timeout or gateway. Offline.
History Roulette
Take a nostalgic spin through your browsing history. One click pulls up a random page you once visited, filtered by age, so you can revisit old finds you'd otherwise forget.
Blackjack Ace – Pro
Hi‑Opt II with Ace adjustment, Kelly betting, and configurable detection.
Nightfall Dark Mode
Give every website a beautiful dark theme. Nightfall darkens pages across the web with adjustable brightness and contrast, a one-tap per-site switch, and an automatic sunset-to-sunrise night mode.
Cart Tracker
Assists healthcare professionals with pharmaceutical data research and information gathering from regulatory websites involving drugs and their prices.
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Meneame LinkBack
Recupera la funcionalidad de ir a la noticia desde el enlace del título en la portada
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![Search Geo & Settings Tuner[sham.si]](https://addons.mozilla.org/user-media/addon_icons/2983/2983096-64.png?modified=a9fdbfc0)
Search Geo & Settings Tuner[sham.si]
Customise Google search by setting location, language, currency & other parameters via a handy popup Compatible with Firefox desktop & Android
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DevVault
All the dev tools you usually paste your secrets into — running 100% offline in your browser.
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Dade Toggle
Adds a toolbar button to toggle dark mode on all active tabs using CSS filter inversion. Version 1.0: Basic toggle using invert and hue-rotate filters.
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SEO Tools by Econet
SEO Helper — Browser Extension for Fast Meta Tag Analysis & Tab Management
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Basic Bearer Headers
Generate and decode HTTP Basic and Bearer Authorization headers in one place. Encode user:pass to Base64, assemble token headers, and read existing headers back into username, password or token. Runs locally.
Emoji Sprinkler
Give web pages a cheerful upgrade by sprinkling relevant emoji after keywords such as pizza, music, star and more. Dial the amount up or down with a slider and revert to the original whenever you like.
Page Weight X-Ray
See how heavy a page really is. Breaks down total transferred bytes by resource type — scripts, CSS, images, fonts, media and more — with per-type counts and bars, using the browser's Performance API.
Page Age Checker
Reveal how fresh or stale a web page is. Fetches the page's response headers to show the Last-Modified time and how long ago that was, with quick access to older versions via the Wayback Machine.
Dead Link Finder
Quickly audit a web page for dead and broken links. Checks every link's response, highlights errors and redirects with their status codes, and shows a clean summary you can filter.
Custom Font Loader
Apply your own custom TTF/OTF font to all websites.
