Browser Tools & Extensions

Temporary Containers

addons.mozilla.org

Temporary Containers is a Firefox browser extension that opens tabs, websites, and links in automatically managed disposable containers. These containers isolate website-stored data including cookies and local storage from each other to enhance user privacy and security while browsing. It supports fully automatic operation based on navigation targets, configuration for specific websites, activation via configured mouse clicks or the toolbar icon, and automatic deletion of history, cookies, and scripts after use. The extension is free and open source.

Get-cookies.txt

github.com

Get-cookies.txt is a GitHub-hosted tool that retrieves cookies.txt files locally on the user's device without transmitting any user information to external servers. It is compatible with Google Chrome and Firefox, and can be installed via the respective web stores or from source code.

Text to Image

chromewebstore.google.com

Browser extension for Text to Image, adding useful tools or workflow improvements inside the browser.

User-Agent String Switcher

addons.mozilla.org

User-Agent String Switcher is a Firefox browser extension that spoofs the browser's user-agent string to prevent websites from collecting information about the user's browser type, operating system, and browsing configuration, allowing users to receive preferred site content. It allows custom user-agent strings to be set via the toolbar popup, uses a two-factor technique to replicate the default user-agent string for reliability, and consumes no resources when not actively spoofing. A common use case is setting a mobile user-agent string to load faster-loading mobile versions of websites.

GlobalSpeed

github.com

Global Speed is a web extension for setting a default speed for video and audio. It applies speeds automatically and allows URL rules for specific sites, and it is offered for Edge, Firefox, or Chrome.

uAutoPagerize

chromewebstore.google.com

Browser extension for uAutoPagerize, adding useful tools or workflow improvements inside the browser.

FireMonkey

addons.mozilla.org

FireMonkey is a Firefox browser extension that functions as a lightweight combined user script and user style manager. It provides similar functionality to user script managers such as GreaseMonkey, Tampermonkey and Violentmonkey, and user CSS managers such as Stylish, Stylus and xStyle. It supports GM3 and GM4 script functions, allows users to toggle scripts and CSS on or off via a toolbar button, contains no tracking or advertising, and is released under the Mozilla Open Source licence. It has experimental support for Firefox for Android.

Native HLS

github.com

Native HLS is a legacy browser extension that allows native HLS and MPEG-DASH playback in a browser. A GitHub page states that it opens m3u8 or mpd links in a video player using the hlsjs and dashjs libraries, and that it was forked from chrome-hls with added features.

Volume Master

chromewebstore.google.com

Browser extension for Volume Master, adding useful tools or workflow improvements inside the browser.

OLED

github.com

A GitHub repository of userstyles for a variety of websites, designed for Stylus. Some of the styles include userCSS. The repository lists styles for sites such as ChatGPT, Claude, GitHub, Google, and Trakt.

FoxyTab

addons.mozilla.org

FoxyTab is a Firefox browser extension that adds a wide range of tab-related actions to the tab context menu. Available actions include duplicating tabs, closing duplicate or left-side tabs, copying tab titles and URLs, merging windows, saving tabs as PDF, sorting tabs, and setting reload timers. The extension also adds a tab counter, country flag indicator, and multi-language date and time display, and contains no tracking or advertising.

Omni

github.com

Omni is a browser extension for Chrome and Firefox that provides a command interface for managing tabs, bookmarks and browsing history. It offers over 50 actions and special commands for filtering results, plus shortcuts for actions such as muting, pinning and bookmarking. The project lists integrations with Notion, Figma, Docs and Asana. It is free and requires no sign-in.

Scroll Anywhere

addons.mozilla.org

Scroll Anywhere is a Firefox browser extension that enables page scrolling without interacting with the browser scrollbar. Users can press the middle, right or left mouse button anywhere on a page to scroll, and the extension also supports grab-and-drag scrolling, customizable scrollbars, and momentum auto-scroll. It is also available for the Thunderbird 78 email client.

Peek

github.com

Peek is a browser tool project hosted on GitHub that allows users to preview documents, videos, music and other content in their browser by hovering the mouse over relevant links.

Quick Copy

github.com

Quick Copy is a browser webextension that eases copying text inside browsers. The repository lists Chrome and Firefox as install targets and notes 2000+ active users on Chrome Web Store. It is distributed under GNU GPLv3, with source in the repository and an icon provided by Unicons.

Read Aloud

github.com

Read Aloud is an open source project with code, documentation, and setup resources for browser extensions.

Session Alive

github.com

Session Alive is a Firefox and Chrome add-on for keeping a website session alive to avoid session timeout messages. Rules can use a background request via AJAX or a foreground request, with a rule name, trigger URL and request interval. Background requests support an asterisk wildcard in the trigger URL.

Sessionic

github.com

Sessionic is a web extension for saving, managing and restoring sessions, windows and tabs. It offers session import and export, automatic saving at set intervals, URL filtering with match patterns, tags for sessions, light and dark modes, and cross-browser support for Firefox, Chrome, Edge and Opera. It is compatible with Session Buddy, OneTab and Tab Session Manager.

SoundFixer

github.com

SoundFixer is a WebExtension for Firefox that addresses sound problems on the web, such as audio in one channel only, volume too quiet at maximum or too loud at minimum. It is distributed through addons.mozilla.org. It does not work on all websites because the Web Audio API cannot be used from a cross-domain source.

Surfingkeys

github.com

Surfingkeys is a browser extension for Chrome, Chromium-based browsers, Firefox and Safari that provides keyboard-based navigation and control of the web in the spirit of the VIM editor. It is intended for users who need more shortcuts for their own functions, and its settings are described in JavaScript, allowing keystrokes to be mapped to user-defined JavaScript functions.

Vimium C

github.com

Vimium C is an open source project with code, documentation, and setup resources for browser extensions.

78d6c1406c901be02c2d

gist.github.com

A GitHub Gist by paulirish titled How to view-source of a Chrome extension. It lists several options for viewing extension source, including a command-line method to download the extension as a zip and extract it, using the CRX Viewer website, and using the CRX Viewer extension. It also describes viewing the source of a locally installed extension.

Bt

github.com

Bt is an open source project with code, documentation, and setup resources for browser tools.

Chromium Drift

github.com

Chromium Drift is a dashboard that tracks Chromium version lag across major browsers. Tracked browsers include Chrome Stable as the baseline, Brave, Edge, Vivaldi, Opera, Perplexity Comet, Arc, Dia and Helium.