Directory
Browser tools and extensions covers add-ons, userscripts and utilities that change how you browse the web. Listings include extensions for Chrome, Firefox and similar browsers, along with userscripts, bookmark managers, tab tools and privacy add-ons. Some entries are official store pages, and others are open projects you install from a repository. The permissions each add-on requests, the last update date and the number of maintainers tell you a lot about it. Extensions can read and change page data, so install from a source you trust and confirm what the add-on actually does.
Copy Selection as Markdown is a Firefox add-on that copies the title, URL, and selection as Markdown. It is in maintenance mode, with no plans for new features or major changes. A Chrome version must be built and installed at the user's own risk.
Userscript for Maximize Video, adding browser customization or automation to supported websites.
A browser extension that modifies the browser's User-Agent string, related Client Hints headers and the navigator.userAgentData object. It can apply custom or randomized User-Agent strings per tab or hostname and deactivates when the default string is used.
Browser extension for Disable All Extensions, adding useful tools or workflow improvements inside the browser.
CRXInstaller is a Firefox browser extension developed by FoxRefire. It enables users to install Chrome browser extensions on Zen, Firefox Nightly, Firefox Developer Edition, Librewolf, and Firefox for Android. Use with standard Firefox requires additional configuration steps. The developer warns that installing untrusted extensions poses serious security risks and disclaims liability for any resulting damage, with the extension's source code available on GitHub.
Snap Links 3 is a browser tool for lassoing links, checkboxes and other elements. It lets users select multiple links, checkboxes and other elements, then act on them, such as opening them in new tabs or checking and unchecking them.
Tab Auto Refresh helps manage browser tabs, sessions, navigation, or tab-related workflows.
Copycat is a browser extension for copying content from web pages. It supports Chrome, Edge and an old Firefox version, and can copy tab titles, links and selections as plain text, HTML, Markdown and other formats. Images, audio and video can also be copied in some formats.
A browser userscript that adds direct download links to Microsoft Store pages when browsing apps. It uses the RG AdGuard project to retrieve links for apps and their dependencies, pointing to files hosted on Microsoft servers. The author reports it as tested on Firefox for Windows with ViolentMonkey.
Browser extension for Extension Manager, adding useful tools or workflow improvements inside the browser.
Mozilla web browser focused on open standards, privacy controls, extensions, and cross-device sync.
Easy Screenshot is a browser extension that captures screens. From its popup, users can capture the entire screen, the currently visible area, or a specific portion. Screenshots can be saved to disk or the clipboard, opened in an online editor, or handled in a chosen combination of these actions. It uses PNG format at maximum resolution and accounts for the screen's device pixel ratio.
Theater Mode is a browser extension or add-on that improves everyday web browsing workflows.
Update Scanner is a Firefox addon that monitors web pages for updates, intended for websites that do not provide Atom or RSS feeds. Users can add pages, choose how often changes are checked, and opt to ignore minor updates. Detected changes appear in a notification panel and highlighted in yellow, and updated items are listed in a sidebar.
Copyfish is a free Chrome extension that enables users to copy, paste, and translate text extracted from images, videos, and PDFs. It is intended for language learners, manga readers, and developers, and its source code is hosted on GitHub.
A userscript for modern browsers that shows images and videos behind links and thumbnails. It is a fork of MPIV and requires Chrome or Chromium-based 55+ or Firefox 52+ for main features.
Browser extension for Extensity, adding useful tools or workflow improvements inside the browser.
Firefox Multi-Account Containers is a Firefox extension that separates users' online activities into color-coded tabs. Cookies are isolated by container, allowing use of multiple accounts on the web, and it can integrate with Mozilla VPN for an extra layer of privacy.
CustomRightClickMenu is an open source project with code, documentation, and setup resources for browser extensions.
Violentmonkey is an open source userscript manager that provides userscripts support for browsers. It allows customization of web pages and automation of work, with data synced to Dropbox, OneDrive, Google Drive, or a WebDAV service and between different browsers. The extension contains no ads and does not modify web pages automatically; changes are made by installed scripts.
Userscript for Picviewer CE+, adding browser customization or automation to supported websites.
Browser extension for Infy Scroll, adding useful tools or workflow improvements inside the browser.
FoxyLink is a Firefox extension that adds link-related actions to the browser context menu. Its features include opening, copying, or saving selected links, removing duplicate URLs, and grabbing URLs from mixed text and hyperlinks. The developer states the extension contains no tracking, advertising, or privacy infringement.
Darkreader is an open source project with code, documentation, and setup resources for browser extensions.
