Browser extensions starting with R

Creates notes, notifications, tab-opening reminders, and actionable tasks in the browser.

Reminders for Google Calendar sends calendar event IDs and saved SMS reminder details to its backend.

This extension sends HTTP and HTTPS REST API requests from a browser interface.

Checks pages for robots, canonical, and link directives that affect crawling or indexing signals.

This extension automatically solves reCAPTCHA challenges using an image classification model.

RECAP uploads PACER docket pages and downloaded court documents to the public CourtListener archive.

Radioplayer UK opens the radioplayer.co.uk listen page in a popup window when you click its toolbar button.

Reading List fetches a favicon from DuckDuckGo for each saved page, disclosing the hostnames of your reading list to a third party.

Reel Downloader for Instagram sends a persistent user ID to a third-party server on startup and captures Instagram session headers.

Automatically reloads selected web pages on a user-defined interval.

Play a 3D rolling-ball arcade game with obstacle-filled levels and collectible diamonds.

This extension helps generate and edit AI-written copy for emails, blogs, social posts, and other content.

Repeek sends FACEIT user IDs and Steam IDs to its own servers when viewing match pages on faceit.com.

ROSE Wallet stores a V0 migration backup of private keys in extension localStorage protected by a KDF 31x weaker than the current standard.

Rakuten Drive contains a flawed postMessage origin check that lets any window inject file links or modify extension settings in Gmail, Slack, and Chatwork.

Rapid Image Search replaces the browser's default search engine with myprivate-search.com and embeds a persistent affiliate tag in every query.

Reactions for Google Meet reads your Google display name from the page and sends it with your meeting room ID to a third-party server.

Readwise Exporter reads Notion session cookies and Roam Research auth tokens and transmits them to readwise.io.

ReciMe Extension sends the active tab's URL and full page HTML to api.recime.app when you open the popup.

This extension lets users create reminders for tasks, health habits, bills, medication, water intake, and daily goals.

Customizes the appearance of scrollbars on webpages in Chrome.

RingCentral Contact Center Voice embeds a hardcoded OAuth client secret used to authenticate token requests to the RingCentral platform API.

Customizes the Roblox website with themes, layout changes, and quick game access features.

Create and apply custom color themes for Roblox pages.

RYS exposes the MD5 hash of its settings-lock password to YouTube pages as a DOM attribute.

RazorWave Video Downloader sends detected video page domains to Google's favicon service when its popup opens.

Read It To Me captures Kindle reader pages as images and sends them to ttstool.com for OCR.

Read Out Loud sends user-selected page or document text to its WebSocket text-to-speech backends.

Reader Mode for Google Chrome uploads saved article HTML to readerview.freebusinessapps.net.

Obsidian Web sends the active page URL, title, selected text, and readable content to the user's local Obsidian API.

Recent Tabs displays recent tab titles, tab IDs, and favicon image URLs in the current page's DOM.

Recipe Search tags default-search queries with a persistent extension GUID and campaign type before redirecting them.

RedNote Downloader sends downloaded RedNote media IDs, your public IP, client ID, and device details to Google Analytics.

Deletes all cookies for the current site with one click.

Replace Google CDN removes security headers from matching CDN responses before pages receive them.

Provides alternate search queries when a website is down or temporarily unavailable.

Resize Gmail Sidebar by cloudHQ sends Gmail account identifiers to cloudHQ during Gmail page initialization.

Resoomer - Cognitive Studio sends the active tab URL to notify.resoomer.ai when you open the popup.

Result Hunter sets resulthunter.com as Chrome's default search provider and sends address-bar searches there.

Return YouTube Comment Username displays channel handles on YouTube comments and exposes a postMessage bridge to all YouTube-origin scripts.

Rize rewrites page titles on all sites to include the active tab URL.

Rocket Sender automates WhatsApp messaging and decides where to activate from a class-name list fetched from its remote config server.

right-click QRcode reader decodes a QR image locally, then opens the decoded text as a new-tab URL after a single OK prompt.

RetailMeNot: Codes, Cash Back and Coupons transmits full page DOM content from shopping and checkout pages to api.onsleek.ai via the Sleek SDK.

RoGold - Level Up Roblox sends visited Roblox user IDs and collectible asset IDs to rogold.live to power its preview and trading features.

Ronin Wallet injects an Ethereum provider into all web pages and fetches an Amplitude script from cdn.amplitude.com with no integrity check.

Recipio routes all search queries through Yahoo affiliate search with hardcoded partner tracking codes, without disclosing this to users.

OnHub Recovery Utility sends recovery target and USB drive details to Google Analytics when crash reporting allows it.

Raga Minions fetches remote userscripts and runs installed script code on Agar.io pages.

Random number generator redirects matching site visits through a bit.ly URL that appends the current page URL.

ReCaptcha Solver sends page URLs, reCAPTCHA site keys, and solver credentials to selected captcha services over HTTP.

ReYohoho Twitch Extension sends your Twitch ID and watched channel to its backend for its friends feature.

Read Pronunciation sends selected text and sentence context to proactive.im for AI pronunciation and flashcard features.

Reader Mode - Natural Reader and dark mode sends visited page URLs and referrers to cleaner.reader-view.com.

Reader View sends the full article HTML to the vendor's server when you use its Save to PC or Save to Google Drive buttons.