Browser extensions starting with C

Controls for Youtube accepts page messages for playback controls and can include stored usage stats in its uninstall survey.

Adds a Chrome button that logs you out of Facebook and removes facebook.com cookies.

Copilotly writes page-readable browser identifiers into storage on every matched website.

Cosmos Extension sends searches typed on its new-tab page to goog.cosmosextension.com.

Coupert Guard lets any website change its ad-blocking settings through a page-accessible message bridge.

Clip web pages, selected content, and images from the browser into Craft documents.

Generates fake credit card details for testing, validation, and free trial activation workflows.

This extension lets users select and crop a screenshot area, then save it as an image file or copy it to the clipboard.

Crossmark Wallet accepts same-page wallet request messages on every HTTP/HTTPS page and forwards them to its background script.

Ctool 程序开发常用工具 sends a persistent user UUID and tool-usage events to www.baiy.org.

This extension converts between 155 currencies using daily exchange rates.

Current Moon Phase uses IPinfo location data to request local moon-phase details from Moon Organizer.

This extension changes the background and text colors used for selected text highlights.

This extension changes the mouse cursor shown on regular web pages in Chrome.

This extension customizes the EcoleDirecte website and adds live grade average calculations.

chatgpt for google: search gpt removes ChatGPT's CSP and uses remote rules to hide page elements.

Copies tab URLs to the clipboard from the current window, all windows, or the active tab.

Replaces YouTube thumbnails with video frames and can adjust title formatting.

Generates fictional credit and debit card numbers for software testing and validation workflows.

CR7 Wallpaper HD HomePage sends new-tab search text to Google Analytics as user-search telemetry.

CS2 Profile Stats sends viewed Steam profile IDs to CS2 statistics services to show player stats.

Click-to-dial lets CallSwitch Communicator users call phone numbers found on web pages.

Cashback beruby records visits to matched advertiser sites by requesting Beruby tracking pixels.

Customizes the background color shown for Google Meet participants without a camera feed.

Customize Chrome’s mouse cursor with built-in styles or your own image.

Change Default Search Engine routes browser search terms through default-search.site and sends ad events with a persistent client ID.

Changedetection.io Website Monitor sends the current tab URL to your configured API when you add a watch.

Exports Gemini conversations as PDF, text, CSV, or Excel files for offline use.

Save ChatGPT conversations as TXT or PDF files from a browser toolbar button.

The extension sends YouTube Music track details to artwork.boidu.dev when animated art is enabled.

ChatGPT to Markdown converts visible ChatGPT conversations into Markdown for clipboard copying or local download.

Check Competitor Stock Levels - Inventory Spy sends Amazon offer-listing details to rebelsoftwarellc.com when you click it.

This extension notifies Chegg subject experts when a new Expert Q&A question is available.

Chinese Tools sends selected page text to PurpleCulture conversion endpoints when context-menu tools are used.

Citace PRO sends active-page citation details to www.citacepro.com when the user generates citations.

Play the classic 2048 puzzle game from the Chrome toolbar, including offline play.

Play a simple 3D bowling game in a Chrome toolbar popup.

Play a classic Pong game offline from the Chrome extension toolbar.

Play a free 2D Uno-style card game in the browser with mouse controls.

Records meeting and website audio in Chrome for later transcription in Clipto.

Shows Cloud Duplicate Finder account details and links to cloud drive scan and setup pages.

CloudTalk Click-to-Call lets webpages trigger its inserted phone links to send click-to-call requests to CloudTalk.

Cluing reports page URLs, titles, and reading engagement metrics for visible text blocks to account.cluing.io.

Opens Microsoft Copilot in a Chrome side panel or popup for quick access while browsing.

Adds a rating-based activity heatmap to Codeforces user profiles.

Codes Hunter sends Roblox game activity, copied codes, searches, and a persistent client ID to Google Analytics.

This extension picks colors from web pages and keeps a history of recent selections.

Compresses PDF files to smaller sizes and lets users save the results locally or to Google Drive.

Consenter Einwilligungsagent exposes its stored consent settings to scripts on any website through a message bridge.

Console Wallet sends each active page hostname to its own phishing-check API.

Contador de Seguidores sends selected Instagram account details to Invertexto endpoints.

ControlUp Enrich sends page and user context telemetry to ControlUp while scanning supported pages for device matches.

Replaces the new tab page with unit converters and Bing-powered search.

Copy All URL's 2.0 statically configures a redirect for yt3.ggpht.com requests through youtube.vulpine.email.

Copies the current page title and URL in Markdown format with one click or shortcut.

Copykiller sends user-selected page text to copykiller.com for plagiarism and AI-generation checks after submission.

This extension helps Coursera learners quickly get shareable links for their submissions.

Cristiano Ronaldo (CR7) MeaVana sends public IP addresses and Urban Dictionary searches to third-party APIs over HTTP.