Browser extensions starting with C

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.

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

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.

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

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.

Chess Helper (chess.com) sends Chess.com board positions to stockfish.online for move recommendations.

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

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.

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.

Clean-Spam-Link-Tweet can send selected X/Twitter post text and account metadata to a developer report server.

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

Clear cookies for one site lets webpages trigger its cookie-clearing button for the current site.

Click Image Download lets page-generated alt-click events trigger extension-managed image downloads.

ClipSave Video Downloader sends clicked Facebook video URLs and page metadata to clipsave.net for downloads.

Clipboard Tool polls the clipboard every second and stores copied text in local extension storage.

Clipper lets web pages invoke its page extraction and cloud clipping actions through a message bridge.

Cloud Print injects Google Analytics JavaScript into activated HTTP pages through its toolbar.

Coin Search reports each visited page URL and hostname to coinsearch.cash when rewards are enabled.

Color Code Finder reads page colors from every HTTP and HTTPS site and sends the computed palette to its extension runtime.

Color Picker captures the active tab image when you use its picker and sends recurring run events to Google Analytics.

Color Picker Tool & Eye Dropper captures the active tab screenshot for local color sampling when you use its picker.

Comment Exporter proxies exported Instagram commenter avatar URLs through cdn.getwebooster.workers.dev.

Comunidade ZDG FREE fetches and eval-executes a GitHub script inside WhatsApp Web after WhatsApp tabs load.

Console Importer injects a page helper on every site that can load user-selected remote JavaScript or CSS.

Consumer Rights Wiki reads page details locally to match visited shopping pages with consumer-rights information.

Contentsquare Tracking Setup Assistant records tracker request details and Contentsquare storage/cookies locally for setup checks.

Convert File sends a bundled ConvertAPI secret with each file-conversion request.

Cookie Clicker Mod Manager injects user-configured remote mod scripts into Cookie Clicker pages.

Cookie Guard writes detected affiliate cookie details into page-visible alerts and sessionStorage.

Cool Cursors redirects Google search pages to ugnewtab.net with the user's original search query.

Copilot by Global Technology rewrites Bing-matching requests and removes CSP and X-Frame-Options responses.

Copilot for Gmail by cloudHQ sends Gmail account lists and visible message contacts to cloudHQ for checks and CRM lookup.

Copy & Paste Tabs copies open tab URLs, and optionally titles, to the clipboard when you click its Copy button.

Copy on Select can paste clipboard contents into editable fields on any website after specific mouse actions.

CopyTabTitleUrl copies tab titles, URLs, and optional active-page fields to the clipboard when the user triggers it.

Core Web Vitals Visualizer sends the active page URL or origin to the Google Chrome UX Report API after a user request.

Cornify records recent key codes on HTTP and HTTPS pages to detect the Konami sequence.

Coupons Search sets searchext.com as your default search engine, routing every address-bar query through a Yahoo-syndication redirect.

CreaSign bridges any webpage's postMessage calls to the locally installed CreaSign native app without validating the message origin.

CrowdScrape reads page text on user request and sends extracted indicators to CrowdStrike Intelligence APIs.

Blocks trackers, cookies, cookie pop-ups, and URL tracking parameters while sending privacy signals.

Crunchyroll Enhancer - CrOptix reports certain German subtitle and watched-episode details to gateway4m.com.

Currency Helper sends searches from its new-tab page to goog.currencyhelperext.com.

Custom Cursor Changer injects cutecursors.com cursor image URLs into pages where its content script runs.

checklist for Google Tasks™ uses your Google account's OAuth token to read and write your Google Tasks lists.

Censor Tracker fetches its proxy server configuration from a remote GitHub URL and routes all browser traffic through that server.

ChatGPT to PDF sends selected or full ChatGPT conversation HTML to PDFCrowd when you save a chat as a PDF.

CDA Downloader randomly opens short.ovh advertising tabs when you click links or its download button on CDA pages.

CSS Stacking Context inspector reads page DOM and CSS stacking-context metadata for its DevTools panel.

CTERA Edit relays page-triggered CustomEvents to a native desktop application on all websites without origin validation.