Browser extensions starting with C

This extension clears selected types of browsing data from a toolbar popup.

Cache Killer clears the browser cache before pages load when the user enables it.

Visually combines duplicate Google Calendar events from multiple calendars into one merged event.

Provides a calendar clock as a browser extension.

Place Cisco Jabber calls directly from the browser.

Camera sends user-submitted webcam snapshots to mara.photos for photo editing.

Canned Replies posts saved canned replies from Chrome sync storage to my.cannedreplies.com during options-page migration.

Batch-generates Canva designs from CSV variables and downloads the results one by one.

Filters Canva search results to show free resources and hide paid options.

CapMonster Cloud reads all cookies for the current site and attaches them to the captcha-solving request it sends to its own API.

Capios ships a disabled LinkedIn sharing branch with OAuth client secret and cookie values in web-accessible source.

Capital Koala sends the current merchant page URL to capitalkoala.com when you activate a cashback offer.

CaptchaSonic uploads your installed-extension inventory and stable browser fingerprint after API-key setup.

Reads YouTube subtitles aloud in a selected speaker language while videos play.

Capture Full Page - Screenshot Editor captures user-requested page screenshots and opens them in an in-page editor.

Take photos and record videos with your device camera from a Chrome popup.

This extension lets you play a browser-based car parking game with selectable cars, levels, and camera angles.

Car Tab sends the hostnames of frequently visited sites to Google's favicon service when the new tab opens.

Caramel sends Amazon cart product-title keywords to grabcaramel.com when applying coupons.

Career.io Job Auto Apply lets any webpage set Career.io account tokens in the extension through an unchecked app.html message.

Cashdo lets any website ask the extension to open a caller-chosen URL in a new browser tab.

Creates and manages Casper Network account keys and signs Casper transactions.

Casper Wallet sends visited merchant URLs and the active wallet public key to api.bringweb3.io for its BringWeb3 integration.

Catch Cat - Super Game sends a generated install UUID to mymoneyrain.com when the extension is installed.

Catchpoint User Experience collects page URLs, performance timing, and resource waterfall data across all sites and forwards them to a locally-installed native host.

Applies Catppuccin-themed file and code icons to supported web file explorers.

Shows John Cena’s theme at random when a new tab is opened.

This extension provides a Web3 wallet for managing multi-chain tokens, NFTs, and digital identity.

This extension changes the browser’s new tab experience with a simple, minimalist approach.

Character set fixer sends the signed-in user's Google email and subscription identifiers to pay.extensiondata.com.

Charlize sends Amazon product ASINs from viewed product pages to its product lookup API.

Chartink To TradingView sends selected Chartink stock symbols to a CloudFront endpoint before opening Kite.

Automatically saves AI chat conversations from services like ChatGPT, Gemini, Claude, and Doubao for later review.

Chat Plus sends selected Google Chat messages to its backend and uploads recorder media to Google Drive.

Downloads ChatGPT conversations as formatted PDF files with one click.

ChatGPT - Snack Prompt accepts page messages on ChatGPT that can submit prompts or open chosen URLs.

ChatGPT Assistant - Use AI Everywhere sends search queries, Gmail content, and selected text to ChatGPT.

Adds a one-click Copy button to messages in ChatGPT conversations.

ChatGPT Extension uploads user-selected image attachments to ImageBB before sending them to ChatGPT.

Organizes ChatGPT conversations into custom folders in the browser.

Shows ready-made prompt examples on the ChatGPT homepage.

Opens ChatGPT in a browser sidebar from the toolbar.

Adds clean timestamps to ChatGPT messages so users can see when messages were sent.

The extension reads clipboard text from prompt buttons and can submit it into ChatGPT or Gemini.

ChatTube sends YouTube transcripts, video details, chat prompts, and Firebase ID tokens to chattube.io.

Overlays Twitch live chat with a native Chatterino window in the browser.

Converts text between Simplified Chinese and Traditional Chinese variants locally.

Chrome Close Lock sends protection on/off status to intellibyte.net over cleartext HTTP.

This extension lets users view, organize, enable, and disable installed Chrome extensions.

Automatically clears browsing history on browser startup or at scheduled intervals.

Turns web pages into a cleaner reader view for distraction-free reading.

Chrome Step ToolBox displays local Anki note metadata and media inside UWorld question pages.

Chromoji can post to Facebook as the logged-in user from its popup.

This extension blocks selected websites and web pages in Chrome.

CiteMaker CiteWeb sends login passwords in GET requests to citemaker.com during popup sign-in.

Cityscapes sends each Chrome top-sites URL to Google's favicon service when it renders the new-tab page.

Claap removes Bubbles and Loom companion widgets from productivity sites where its content script runs.

Claude Token Counter reads Claude organization, usage, and conversation data on claude.ai to calculate local token metrics.

Clear Cache Chrome includes a Google Analytics API secret in its shipped code and sends analytics events to Google.