Browser extensions starting with B

Adds a toolbar button for opening Google Calendar, creating events, joining meetings, and receiving calendar reminders.

Porn / Adult Blocker, Block Sites - BlockerX sends blocked page URLs and blocking reasons to Mixpanel analytics.

Boosts volume and bass for audio playing in the current browser tab.

Redesigns the Bilibili homepage with added features and personalization options.

Creates citations and bibliography entries for websites and journal articles from the browser.

Blocks chosen websites and can redirect or limit access based on custom rules.

Browser-Surf replaces the new tab page with a search form that forwards every query to browser-surf.xyz with an affiliate tracking ID.

BTRoblox ships a hardcoded ButterCMS API token in its extension bundle used to fetch blog content.

This extension opens a pasted or saved list of URLs in multiple tabs with one click.

Bilibili Video Download Helper resolves your public IP and sends a per-user telemetry record to an Alibaba Cloud logging service on downloads.

Binotel Virtual PBX scans configured webpages for phone numbers and sends clicked numbers to Binotel over WebSocket.

Supports phone-based assistance for agents helping Uber customers.

BotRix fetches shop data from botrix.live and inserts item names and prices into YouTube and Trovo page HTML.

Ban Checker for Steam sends Steam IDs and an API key to Steam's GetPlayerBans API to check player ban status.

BetterFloat injects a page-level fetch/XHR interceptor into 26 skin-trading marketplaces and sends pro users' Steam IDs to its own server.

BibGuru Citation Generator sends page metadata to search.paperpile.com when the user activates it on a page.

Blueticks keeps a persistent connection to its MQTT broker and runs server-issued commands that read your WhatsApp contacts, chats, and messages.

Builder.io captures page DOM, screenshots, and CSS from any tab when a user selects an element for editing in the visual editor.

Open web pages and links in the Bulk Image Downloader Windows app from Chrome.

Bitdefender TrafficLight for Firefox sends every visited URL to Bitdefender's cloud servers for real-time threat classification.

Create, remix, share, and download music tracks with a grid-based sequencer.

This extension shows the current BTC/USD price in the browser toolbar.

Bittorent For Chrome sends your saved uTorrent Web UI password as a Basic-Auth header over plain HTTP and to message-supplied URLs.

Blerp reads the channel or account name of the streaming page you are on across 11 platforms and stores it in the browser.

Block Websites Focus Timer sends usage metrics and a persistent device ID to Amplitude's EU analytics servers.

Save tabs as sessions and manage bookmarks with search, folders, and duplicate cleanup.

Banrisul security extension bridges the bank's own web pages to a local native application for chip card transactions.

Configures BLHeli ESCs and updates their firmware from Chrome.

Bambuser One-to-One removes X-Frame-Options/CSP headers and rewrites consent cookies on merchant sites named in Bambuser's remote config.

Download multiple files from a website without saving each link one by one.

This extension opens local EPUB files in a continuous, customizable reader.

This extension provides a free VPN proxy connection for browsing, streaming, and gaming in Chrome.

BookWidgets reads the user's Google account email from classroom.google.com and sends it to bookwidgets.com on panel open.

Change, reset, and export custom favicons for bookmarks.

This extension adds AI writing, chat, translation, and summarization tools across web pages, Google Docs, social platforms, and search.

This extension helps test web pages and workflows for accessibility issues against WCAG-related criteria.

Buster bundles Wit.ai API credentials encrypted with a key derived entirely from its own publicly distributed source files.

BlockSite sends per-navigation browsing history and a persistent device identifier to its servers when the user enables analytics.

B.Point Saas Chrome Extension relays commands from WKI SaaS pages to a local native messaging host on Windows.

Backup WhatsApp Chats sends a device fingerprint and license key to a third-party verification server on download.

Batch Upload Tool sends page URLs, device identifiers, and IP addresses to events.sellfox.com on every product scrape action.

BeeLine Reader sends the full URL of each active page to Google Analytics via a tracking pixel for free and trial users.

Belfius Smart Card Reader relays commands from permitted web pages to a native card reader host via native messaging.

Benefithub sends the current site's hostname to its API to check for merchant offers.

Best Cursors exposes a stored user identifier and cursor collection to any website via unguarded message handlers.

Shows historical listing and valuation details for homes on the Dutch real estate platform.

BigBobux overwrites the Robux balance display on Roblox pages with user-configured fake values.

BitLife Life Simulator Unblocked opens an external publisher page on every install without user interaction.

Bloc de Notas Online is a packaged app that opens an online notepad over cleartext HTTP, so typed notes transit unencrypted.

Provides real-time multichain gas price estimates for Ethereum, Bitcoin, Arbitrum, and other networks.

BookBeam: Extension scrapes Amazon and Audible book metadata on every page visit and transmits it to app.bookbeam.io.

Breeze Search sets breezetask.com as the browser's default search engine, so every address-bar search is sent there.

Bright Tab routes every new-tab search query through its own server with a persistent user ID and a server-assigned secret token.