Browser extensions starting with C

Access and manage Google Drive files from a browser button without opening the full Drive page.

ChemDraw Web Clipboard bridges clipboard requests from any webpage to a local native messaging host on the user's machine.

This extension redirects Cortana and Bing searches in Chrome to a user-selected search engine.

Chromium browser automation records user interactions including password field values and replays them by executing caller-supplied scripts in page context.

Cloaq requests IP geolocation from ip-api.com over HTTP whenever its popup opens.

Clutter Free prevents duplicate tabs and transmits user IP addresses to geoplugin.net over unencrypted HTTP when the premium page is opened.

This extension opens comic book files such as CBR, CBZ, and PDF in Chrome.

Companion Window sends the full URL of pages you visit plus a persistent user ID to GiveFreely's analytics server when its review prompt fires.

Adds model switching, conversation export, customization, and interface enhancements to Perplexity AI.

Compresses PDF files online to reduce their file size for uploads, email attachments, or archiving.

Connecteur de sécurité banque à distance bridges BPCE-group banking pages to a local certificate-signing application via native messaging.

Copies selected web text to the clipboard without formatting.

Copycat Ads sends Facebook Ads Library search, ad, and advertiser data to its backend during tool use.

Counting Characters sends the active tab URL to countingcharacters.com when users click its webpage word-count link.

Create Link executes user-defined JavaScript in the content script context on every page visited when a custom format filter is set.

Cross-border Product Collection scrapes Shopee product listings and forwards product data and page URLs to BigSeller's servers.

Crunchyroll Speeder exchanges your Crunchyroll session cookies for an OAuth token and reads your account, history, and subscription data.

Cursorland applies user-selected custom cursors across all visited pages using SVG images fetched from cursor-land.com.

Theme & Color Changer for YouTube opens promotional tabs on install and every update without user interaction.

Custom Search Tool overrides the default search engine and sends all user searches to Yahoo with hardcoded affiliate tracking parameters.

City Scapes sends every new-tab search query to a third-party monetized search proxy instead of your browser's default search engine.

CS2 Trader scrapes Steam API keys and access tokens from Steam pages on install and sends item inspection data to its developer backend.

C2 Password reads form credentials on all sites, auto-fills stored logins, and disables Chrome's built-in password saving.

CFCA CertEnrollment.SRCB Extension bridges SRCB bank pages to locally installed native messaging hosts without validating the host name.

Enables CFCA U-key certificate authentication for Bank of Beijing personal online banking.

CFCA CryptoKit.SRCBSCF Extension bridges CFCA-affiliated banking pages to a local native messaging host for cryptographic operations.

CFCA WebSeal.SRCB Extension bridges bank web pages to local native security software via native messaging, accepting the target host name from the calling page without validation.

CORS Unblock rewrites CORS response headers across all sites when its unblock mode is enabled.

This extension helps developers evaluate the strength of Content Security Policy settings.

Cambridge Dictionary Lookup sends selected text to Cambridge Dictionary when you choose its lookup menu item.

Cats Fan sends new-tab search queries to cats.catsfanext.com with an affiliate tracking ID.

Change Timezone (Time Shift) accepts timezone-override commands from any page, with no check on who sent them.

ChatGPT For Chrome sends search-result queries to OpenAI to generate its sidebar answers.

ChatGPT Optimizer sends user-selected page text to ChatGPT and user-entered URLs to productivity.rocks.

ChatGPT for Gmail sends your Gmail account email, timezone, and selected draft text to Salesgear AI endpoints.

Chatslator sends Kick, Twitch, and YouTube live chat text to Google Translate for real-time translation.

Chatwork Quick Info Input injects Google Fonts into ChatWork pages, sending referrer and IP metadata to Google.

CheaperThere sends selected flight and hotel itinerary details from supported booking sites to its pricing API.

Chrome Audio Capture records the active tab's audio after a popup request and saves the recording locally.

City Bus Driver Car Game opens a promotional publisher webpage on install and redirects to it on uninstall.

City Scapes sets your browser's default search engine to landscape-extensions.com, an unbranded third-party search proxy.

ClassroomGo embeds a hardcoded YOURLS API signature in its bundle, allowing any party with source access to create short URLs on gtogo.to.

Classwork Zoom can upload Google Classroom and Drive API responses when server-controlled logging is enabled.

Claude Fable 5 Limit & Usage Tracker - ClaudeKarma sends daily health counters, version, OS, and language to TokenKarma.

Claude QoL lets scripts on Claude pages read its stored text-to-speech provider API key through a postMessage settings bridge.

Claude Tuner sends snapshot submissions to its backend using a shared fallback API key.

Cloud VPN sends the first page URL visited on each host to vpnincloud.com before the VPN connects.

Colorway is a color-picker that, once opened on a tab, accepts page messages with no origin check to capture a screenshot or write its storage.

Compras online Travel Club sends your saved Travel Club card number to Travel Club when you save it.

Conductor for Chrome reports every page URL you visit to its background worker and sends on-page SEO scrapes to Conductor for signed-in users.

Contact Saver for WhatsApp reads every contact, group member, and label from WhatsApp Web and exports the dataset to a local CSV/XLSX file.

Convert HEIC to JPG injects a hidden onlineapp.pro paywall iframe into every page and runs a leftover dev hot-reload client on localhost.

Country Flags & IP Whois loads a GeoLite2 database from a CDN without integrity checks to resolve page IP addresses to countries.

Crunchbase sends LinkedIn parser errors, including page DOM snippets and URL context, to Sentry.

Mouse Cursor - Custom Cursor injects cursor-image URLs from cutecursors.com into every matched page.

SAP Build Process Automation extension captures page content, cookies, and screenshots and sends them to the local SAP desktop agent.

cat-catch lets any HTTP(S) page send background commands that can turn on auto-download and queue media URLs.

color picker for website - monster pick contacts colorpicker.monster on install/update and can open a server-provided tab.

Eno from Capital One scans page structure on all sites and sends URL, referrer, and session identifiers to Capital One analytics.