Browser extensions starting with C

Calculator app sends popup usage and license-flow events to Google Analytics.

Turns on your webcam so you can take pictures or photos in the browser.

This extension reports a random fake canvas fingerprint when websites check canvas data.

Capsule Hub reads your AI chat transcripts and Gmail/Outlook email threads and uploads them to its own servers to build reusable "capsules."

Cash Catch runs on every site and sends the full URL, referrer, and hostname of each page you visit to its servers.

Blocks selected videos, users, or entire channels with one click.

Adds dark mode themes to Messenger on messenger.com.

Send AI chat messages with Ctrl+Enter or Cmd+Enter instead of Enter.

Queues ChatGPT image prompts and downloads each generated image automatically.

This extension notifies you when cheaper flight prices are available during your flight search.

CheerpJ Applet Runner exposes a proxy frame that fetches caller-supplied URLs and returns the responses.

Adds a simple offline notepad to the browser for writing, copying, speaking, and managing multiple notes.

Play piano songs in the browser using a keyboard or mouse.

Claude Usage Tracker monitors token consumption on claude.ai and contacts api.anthropic.com for token counts when a user API key is set.

This extension clears browsing data such as history, cache, cookies, downloads, passwords, and saved form data.

Adds a reader mode with AI summaries, translation, text-to-speech, export, and cloud sync features for web articles.

Deletes browsing data with one click or a keyboard shortcut.

Adds a small analog clock next to the Chrome address bar.

This extension converts files between more than 200 formats using CloudConvert’s online conversion service.

This Chrome app displays system information using Chrome system APIs.

Applies a customizable color filter to webpages to improve color perception.

Color Picker - Eyedropper Tool puts user-triggered tab screenshots in a page-readable canvas.

Color Picker reports the full URL and referrer of every page you visit to gopickcolors.com, keyed to a persistent ID.

Parses competitive programming problems and contests for use in supported coding tools.

Control Panel for YouTube exposes its stored settings to scripts running on YouTube pages.

This extension lets you view, add, edit, delete, import, export, back up, and restore browser cookies.

Clears cookies and site storage for the active website with one toolbar click.

Copytables runs on every page and writes selected table content to the clipboard.

Manage cryptocurrency and NFT wallets across multiple blockchains from a browser extension.

This extension lets users play a physics-based candy puzzle game in the browser.

This extension provides a physics-based puzzle game about collecting candy for a little monster.

This extension records and audits activity in CyberArk Identity-protected web applications.

coffeelings loads third-party font and image assets when its popup opens.

Connective signing extension lets any website ask its local signer app for GET_INFO details and read the response.

Enables authentication and digital signatures in Certisign corporate applications.

This extension lets users manually set webpage character encoding when text appears garbled.

Remove unwanted page elements temporarily or permanently while browsing websites.

Adds standard playback controls to Instagram videos embedded on web pages.

Copy All URLs (Free) reads the URLs of all open tabs in the current window and copies them to the clipboard.

Copies open tab URLs to the clipboard and opens clipboard URLs in new tabs.

Adds customizable colorful trails that follow your mouse cursor while you browse.

VIPRE URL Filtering sends HTTPS page URLs and headers to its local native security host.

Converter Suite sets Yahoo as the default search engine and routes all searches through an undisclosed affiliate tracking account.

Shows CSS properties for page elements when you enable it and hover over them.

Keeps your display or system awake to prevent sleep during presentations, reading, or downloads.

This extension changes selected text between title case, sentence case, uppercase, lowercase, and programmer-style cases.

Checks whether the YouTube channel you are viewing is monetized.

Shows shared US visa appointment slot availability while using the USVisaScheduling portal.

This extension makes scrolling smoother on HTTP and FTP pages.

ClearTok sends your TikTok username and repost-removal activity to its own servers via a session-based tracking system.

Simulates different types of colorblindness on websites for accessibility testing.