Browser extensions starting with C

Redirects Bing search requests to a search engine you choose.

Clari Groove reads the content of Gmail emails and Google Calendar events and sends them to its backend to log activity in Salesforce.

Automatically removes tracking elements from URLs as you browse.

ClickFix Block detects and blocks ClickFix social-engineering prompts on most web pages, and exposes its settings to any page via an open external-messaging channel.

Color by Fardos sends all link URLs from every HTTPS page to admitad.com and replaces them with affiliate tracking links.

Automatically clears cookies and other site data after tabs are closed, with whitelist and greylist controls.

This extension lets users view, edit, import, export, and delete cookies for the current page.

CrankWheel reads contact fields from your open CRM record and sends the screen-shared tab's URL to its own servers.

The extension mints a token from your Crunchyroll session and sends your watch history, profiles, and subscription data to me3x.online.

Records browser videos with automatic cursor-focused zooms and pans.

PDF to Word uploads the opened PDF to ZonePDF servers when you start a conversion.

Citavi Picker sends OAI publication identifiers to CORE when searching for downloadable PDFs.

Chrome Mask fetches a Chrome version number from a third-party server and injects it into request headers on user-whitelisted sites.

CatalyzeX sends page URLs, paper titles, and arxiv IDs to its servers on every academic page visit, and links this activity to authenticated user accounts via Mixpanel.

This extension enables selecting and copying text on websites that block it.

CF-Predictor reads every contestant handle from a Codeforces standings page and sends them to its own server to compute rating predictions.

CFCA CertEnrollment bridges ADBC bank pages to a local native application for certificate-based authentication.

CFCA CryptoKit.ADBC bridges pages on adbc.com.cn and hellotech.top to a locally installed bank PKI/certificate app via native messaging.

This extension shows a calendar clock with local time.

Adds a dark mode appearance to Canvas pages on instructure.com domains.

Capturables exposes a persistent install identifier to every visited page.

Adds rating-change and performance columns to Codeforces ranklists.

Chromegle sends Omegleweb video-chat peer IP addresses to geo.eulerstream.com for geolocation.

Citrix Secure Access logs every site you visit and can relay clipboard content to your IT admin's Citrix gateway.

CoffeTab replaces your new-tab page with a meta-refresh that immediately redirects every new tab to coffetab.com.

Collibra Browser Extension connects to a configured Collibra instance and sends search activity and login events to Pendo.io analytics.

Control de URLs para nebulaCERTagent sends the active or pending tab URL to its native messaging host.

Convert Picture to Text runs Tesseract OCR locally in the browser, fetching language model files from an external CDN when processing images.

Converter for Excel uploads user-selected Excel files to api.pdfconverted.com for PDF conversion.

Copies titles and URLs from open tabs to the clipboard in selectable formats.

Sets a custom page or local file to open whenever you create a new Chrome tab.

CyberGhost Cookie Cleaner sends domains shown in its exceptions UI to Google's favicon service.

CFCA CryptoKit accepts a caller-supplied native host name from bank-domain pages and connects to it without validating it against an allowlist.

This extension uses CFCA certificates to help perform message encryption and decryption.

CSDN browser assistant adds a clip button to every website and reports your CSDN account cookies and page views to CSDN's tracking servers.

CXone Agent Noise Cancellation provides audio noise cancellation for NICE CXone contact-center agents and exposes no external data collection.

Place calls through Cisco Jabber directly from the browser.

Hides selected Twitter interface items to create a calmer browsing experience.

Replaces the new tab page with a customizable dashboard of widgets and sidebar tools.

ChinaHelper silently redirects ordinary AliExpress product page visits through an affiliate link carrying the developer's own tracking IDs.

Checks websites and provides real-time security warnings while you browse.

Adds browser access to Clockwork PHP application runtime metrics for development and debugging.

Searches specific content sites from the browser address bar using @ commands.

Play a browser clicker game where cookie clicks earn upgrades and ongoing cookie production.

Shows a customizable clock in the browser toolbar with notifications and time tools.

Copy Cookies reads every cookie for the active tab, including httpOnly ones, and copies them to your clipboard on click.

Copy Youtube Transcript sends YouTube transcript text and your chat prompt to cyt.hamzaw.com.

Coursology sends selected text and tab screenshots to its AI API and stores user-uploaded files publicly on Vercel Blob storage.

CrapApi Http Test syncs your saved API requests, including headers and credentials, to its backend over unencrypted HTTP.

Converts highlighted prices and amounts into multiple currencies using current or saved exchange rates.

CyberGhost VPN Free Proxy bundles a hardcoded shared API key that is sent to its backend on every request.

Checker Plus for Gmail monitors your Gmail inbox and, when AI Compose is used, transmits email subject and reply text to a vendor-operated cloud proxy.

BestPrice Assistant scans every page you visit for product data and reports it to bestprice.gr's servers.

CCH® Browser Search transmits search queries and a user identifier to cchconnect.cch.com on every Google, Bing, and Google Scholar search.

CFCA SecEditCtl.SRCB Extension bridges pages on srcb.com and shrcb.com to a locally installed native messaging host without validating the host name supplied by the caller.

CMS Detect sends the active tab's URL to cmsdetect.com over plaintext HTTP each time the popup is opened.

Cart'In automatically overrides your Amazon.fr delivery location to a fixed French postcode on every visit.

Cartoon Yourself sends selected text to cartoonify.de over plain HTTP via a context menu shortcut.

ChatGPT Assistant Plus sends a persistent UUID to Google Analytics hourly and silently opens chatgpt.com tabs to refresh session tokens.