Browser extensions starting with F
466 browser extension security reviews, listed by name.

FastSave for Instagram
FastSave for Instagram
CleanFastSave for Instagram reads selected Instagram profile and post media URLs to download media locally.

Font Changer
ExtensionHub
MediumFont Changer rewrites shopping links and queries deals99.com for affiliate promotion URLs.

FicLab
Erayd
LowFicLab sends downloaded-story metadata and source URLs to www.ficlab.com after successful ebook downloads.
FC Barcelona Mosaic Live Wallpaper
livewallpaper · Art & Design
LowFC Barcelona Mosaic Live Wallpaper sends custom shortcut URLs to Google when it loads missing shortcut icons.
FINTRX Private Wealth Data - Chrome Access
FINTRX, Inc.
CleanFINTRX Private Wealth Data checks visited hostnames against platform.fintrx.com for logged-in users.
FUNNELBOT CF Page Copier
Funnel Fix It
CleanFUNNELBOT CF Page Copier sends the active tab URL and rendered page HTML to FunnelBot when users run Manual Hack.
FUT Alert - My Extension
FUT Alert
MediumFUT Alert - My Extension lets EA/FUT and FUT Alert pages read saved local storage and send imported club holdings to futalert.co.uk.
Fat cat picture batch download
tomxuxu
LowFat cat picture batch download can route Chrome update checks through agency.pictureknow.com.
Felo Search 萬能工具箱
Will 保哥
CleanThe extension sends selected page text, page titles, and URLs to felo.ai when users request a Felo summary.
Ferrari F1 Car Wallpaper
themevisual
CleanFerrari F1 Car Wallpaper sends custom shortcut URLs to Google's favicon service.
File Management - WebDav
hocgin
CleanFile Management - WebDav sends saved WebDAV account URLs, usernames, and passwords to api.hocgin.top.
Final Fantasy 7 Remake Wallpaper
faithyong · Fun
LowFinal Fantasy 7 Remake Wallpaper sends top-site URLs from its new tab page to Google's favicon service.
Fireblocks DeFi extension
Fireblocks
CleanThis extension lets Fireblocks customers access dApps through a Fireblocks MPC wallet interface.
FlowForge Pro - Veo AI Automator
malsandigital
CleanFlowForge Pro captures Google Labs prompts and generated media URLs for local automation backups.
Flowchart Maker
pseko.warjovica
MediumFlowchart Maker requires first-run survey answers and an email address, then sends them to quiz.swimming.run.
Forge
Windsurf
LowForge removes GitHub page security headers on main-frame and sub-frame loads.
Forum Script
kalimullinbr
CleanForum Script sends visible log-page IP addresses to geolocation services for location and proxy labels.
Free Phone Number Finder
chekkutech
CleanFree Phone Number Finder scans the active page for phone numbers and displays them in its popup.
Free Photo Editor
GT
CleanFree Photo Editor sends user-selected image URLs to the-image-editor.com from context menu actions.
Free Turbo Comment Export Tool
hubext · Social & Communication
LowFree Turbo Comment Export Tool sends Instagram commenter avatar URLs to igimg.hubext.com during comment export.
Free VPN Premium for Chrome - OnVPN
RunApps · Privacy & Security
MediumFree VPN Premium for Chrome - OnVPN sends each completed top-level navigation URL to www.runapps.org with a persistent user ID.
Freelancer Helper
goodthingscming
LowFreelancer Helper sends project details and profile fields to freelancerhelper.click when generating AI bids.
Funny Gru
TiemBrent · Fun
CleanFunny Gru rewrites images, backgrounds, cursor styling, audio, and new-tab pages across all websites.
Fuse Flow
Fuse Universal
CleanFuse Flow sends searches, selected page text, and active tab titles to the user's Fuse tenant APIs.
ff2mpv
ff2mpv
Cleanff2mpv sends user-selected page, link, media, frame, or text URLs to the local ff2mpv native host.
find-your-product-on-meesho
github@slim-python
Lowfind-your-product-on-meesho injects a Meesho inventory banner controlled by GitHub JSON and tracks banner events with Mixpanel.
firestore export in one-click
Jerry Baba
Highfirestore export in one-click sends sample Firestore export data and Firebase context to Mixpanel during exports.
fnaf 4 online
troutilsaghijd
Lowfnaf 4 online sends a persistent extension UUID and game or notification interaction events to yoki.games.
fontSwap - Custom fonts for every website
Brahmastra
LowfontSwap sends extension error reports that can include the current tab URL to a Cloudflare Worker.
fubukicss-tool
zouhangsweet
Mediumfubukicss-tool redirects and rewrites Figma application scripts using rules fetched from ecomfe.github.io.

fc_enhancer
FUTNext LTD
LowFC26 Enhancer sends Futnext account, EA persona, and entitlement details to PostHog analytics at g.futnext.com.

Fake Data - A form filler you won't hate
Hater Apps
CleanFake Data embeds OAuth client secrets for Google Sheets and Fake Data API token exchanges in its extension package.

Fleetyards Sync
Fleetyards.net
CleanFleetyards Sync lets Fleetyards pages request RSI identity and pledge-page data using your RSI cookie.

Flickr Size Pickr
SophistiCat
LowFlickr Size Pickr injects Flickr API image URLs into the active Flickr tab without escaping them.

Feature Queries Manager
ireaderinokun
CleanFeature Queries Manager reads CSS @supports rules and stylesheet URLs from pages opened in its DevTools panel.

FACEIT Lobby King Extension
Lobby King
CleanFACEIT Lobby King Extension forwards FACEIT match details and player IDs to lobbyking.app during lobby analysis.

Free Visio Viewer (Mac, Windows, Linux)
Lucidchart
CleanFree Visio Viewer uploads user-selected Visio files to Lucid for conversion.

Foxtana Pro - Redirect Cortana
Marc Guiselin
LowFoxtana Pro rewrites Bing search URLs to a chosen search engine and forces custom search redirects to HTTP.

Folx 5
Electronic Team, Inc.
CleanFolx 5 forwards download URLs, referrers, and cookies to the local Folx download handler.

feedly_mini
Feedly
CleanFeedly Mini sends the active tab's URL and full page HTML to Feedly when its popup optimization runs.

Free Android online emulator ApkOnline
ApkOnline android online emulator
MediumFree Android online emulator ApkOnline sends non-ApkOnline tab URLs with a persistent user ID to www.uptoplay.net.

Furigana
EYHN
LowFurigana converts Japanese page text into parsed HTML, so page text containing markup can become live DOM elements.

Force Paster
Pratyush Vashisht
LowForce Paster sends the page hostname and paste-use metadata to its Cloud Functions analytics proxy.
F-B Hide Recommendations and Reels
mrinc
CleanF-B Hide Recommendations and Reels uploads a Facebook page HTML snapshot to its vendor during support diagnostics.
F.B Data Scraper - Posts, Comments
www.chattuesday.com
LowF.B Data Scraper - Posts, Comments copies full page HTML from every HTTP and HTTPS site into the extension.
FACE-X
rksss
LowFACE-X sends Steam profile IDs from Steam Community pages to Faceit and CSStats to display Counter-Strike stats.
FC 26 Sniping Bot & Autobuyer - Stevie's Sniper
Stevie's Sniper
LowFC 26 Sniping Bot & Autobuyer lets listed football sites call background actions that read settings and use its backend API.
FGIS Educational Emulator
UnitCode
CleanFGIS Educational Emulator sends support appeal screenshots and page details to edu.mcx.ru.
FIO Client
FNAR Industries group
CleanFIO Client forwards Prosperous Universe account and activity messages to FIO services.
FLIKOVER
nnsoftware
LowFLIKOVER loads remote stylesheets and images from Flikover and public CDN hosts when its popup opens.
FLYFF_Helper
illuminechen
LowFLYFF_Helper lets any site send commands to its local FlyFF WebSocket bridge.
FNAF Live Wallpaper
yowtheme
LowFNAF Live Wallpaper loads Google-hosted font resources each time its custom new tab page opens.
FNaF Cursor - Custom Horror Cursor for Chrome
PixEXT · Entertainment
LowFNaF Cursor - Custom Horror Cursor for Chrome adds a page-readable extension ID prefix to every website it runs on.
FOLDING AT HOME IN THE DARK
folding.lar.systems
LowFOLDING AT HOME IN THE DARK lets any site load its control page, poll the local Folding@Home client, and send slot samples.
FREE FLOW AUTOMATION - VEO AUTOMATION
Dang Huynh
CleanFREE FLOW AUTOMATION captures Google Flow authorization headers and request bodies on labs.google pages.
Fable 5 Claude Usage Tracker — UsageMeter
PiloteCode
LowGaugr for Claude.ai uploads Claude account metadata and usage history to gaugr.app for cloud sync.
Facebook Comments Exporter
LowFacebook Comments Exporter removes Content-Security-Policy headers on Facebook pages before injecting its scripts.
Facebook Group Cleaner
irfanalam.anstar
CleanFacebook Group Cleaner sends assisted-service contact details and the submitted group URL to Web3Forms.
Fashion Background Pictures New Tab
Fashion New Tab
MediumFashion Background Pictures New Tab sends new-tab search queries to feed.mambosearch.com with publisher and barcode IDs.
Fastcup Helper
Good Boy
MediumFastcup Helper includes a FACEIT bearer token in requests from its content script.