Browser extensions starting with F

Footballguys Extension: Manage My Leagues sends fantasy-site cookies to Footballguys pages on request.

Opens new tabs in the background instead of switching to them automatically.

Force Paster sends paste activity, active hostnames, and field tags to a Cloud Functions analytics proxy.

This extension forces videos into Picture-in-Picture by removing the disablePictureInPicture attribute.

FoundersCard Chrome Extension fetches a benefit list from founderscard.com and injects server-controlled HTML into every visited web page.

Switches the browser connection between one or more proxy servers using icons, URL rules, or individual tabs.

Finds free OpenVPN servers and downloads OVPN configuration files.

Sets Freespoke as the browser’s default search engine for searches.

This extension provides a self-custodial crypto wallet for the Fuel blockchain.

Captures full-page, visible-area, or selected-region screenshots from Chrome pages.

Turns the browser into a light node for Functor Network on EVM chains.

Adds furigana readings to Japanese text on webpages for reading practice.

Saves e-pity and fillUp form data in the extension’s internal storage.

Play a Flappy Bird-style side-scrolling game in Chrome with a night farm mode.

folkX captures visible profile data from Gmail, X, Instagram, TikTok, WhatsApp, Facebook, and Meet and syncs it to its own CRM backend.

Runs Flash content in the browser using the Ruffle emulator.

Flight Tab Pro redirects all address-bar and new-tab searches through Yahoo affiliate URLs that pay the publisher per query.

F.Block Sponsored sends its Facebook ad-block counter to fblocksponsored.de during updates and uninstall setup.

Adds visual enhancements and profile-related details for FACEIT pages.

FLG accepts login tokens from page events and uses them for FLG Platform API requests.

FMHY SafeGuard fetches unsafe-site reason text from GitHub and inserts it into search results as HTML.

Fable sends active-tab URLs to Segment and accepts page messages that forward URLs and page snippets to Fable.

Fabric web clipper sends the clipped page URL, title, HTML, and reader text to api.fabric.so when saving a bookmark.

Provides FamilySearch Center users access to premium content and limited-access records.

FaniMani.pl Donation Reminder sends visited page URLs with a persistent user identifier to FaniMani stats and Google Analytics.

Fast Wallet sends biometric auth keys and a persistent device identifier to api.suiet.app, a third-party server, during biometric setup.

FastStunnel VPN can fetch an HTTP bootstrap file that selects the API server receiving login credentials and session tokens.

Fenerbahçe SK Anasayfa's new-tab search box loads and executes remote JavaScript returned by a third-party search API.

Translates supported Figma file pages into Japanese.

This extension replaces generic file icons with filetype-specific icons on GitHub, GitLab, and similar sites.

Findymail checks postMessage sender origin with a substring match, then writes the message data into the LinkedIn page via innerHTML.

Spoofs browser fingerprint details and can block images or JavaScript on pages.

Firewall Bypass vu loads a remote jsPDF library from cdnjs into VULMS pages.

Fiverr Mate reads a Syntaximos login cookie and sends it to apifiverrmate.syntaximos.com to obtain an extension API token.

Quick Grammar Fixer & AI Proofreader sends selected or typed text to a Vercel-hosted grammar API when you check grammar.

Flash Player EmuFlash lets sandboxed Flash content send arbitrary web requests through the extension.

Capture quick notes, highlights, and URLs with offline-first note-taking and Obsidian sync.

Flight Fare Compare opens fare-comparison sites with your Google Flights route, dates, passenger details, currency, and locale.

This extension plays YouTube videos in a floating Picture-in-Picture window while you browse.

This extension lets users share unused bandwidth and CPU power to earn Flow3 Points.

Flowith Web Clipper sends clipped content to Flowith's dev-edge server with a bundled API key.

This extension provides an in-browser Web3 wallet for managing blockchain funds.

Opens an interactive fluid simulation window from the browser toolbar.

Blocks selected websites and online services behind a PIN on a schedule.

Identifies the font family and font class used by selected text on a webpage.

Identifies the active font used by text you click on a web page.

Change website fonts using fonts already installed on your device.

Force Copy injects a main-world script that can override copy, keyboard, and context-menu restrictions on visited pages.

Force.com LOGINS stores Salesforce account passwords in extension localStorage without protection by default.

Foxit PDF Editor Cloud lets websites invoke its viewer to fetch a supplied URL and pass the response to Foxit cloud.

Generates AI artwork from short English text prompts.

Free AI ReCaptcha Solver by Raptor stores solved reCAPTCHA images and labels and uploads them to captcharaptor.com.

Checks SEO metrics for the current site or up to 20 entered domains at once.

This extension opens random free indie games to play online.

This extension replaces the new tab page with a Free Manuals Online search and shortcut experience.

This extension records your screen with audio and lets you download the recording to your device.

This extension launches FreeConferenceCall.com meetings and enables screen sharing on Chromebook computers.

Freighter sends data-sharing wallet usage telemetry and dApp domains to Amplitude.