Browser extensions starting with C

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.

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

Create, edit, and cloud-sync visual mind maps with shapes, colors, images, notes, and fonts.

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 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.

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

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.

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

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.

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

Connects managed student Chromebooks to classroom.cloud teacher and administrator portals for classroom management.

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

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.

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

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.

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

CSFloat Market Checker lets allowed Steam Community and CSFloat pages read its cached Steam Web API token from extension storage.

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

CFCA CryptoKit.CIB Extension forwards caller-supplied native host names without validation, allowing any authorized origin to connect to arbitrary native messaging hosts.

CJDropshipping stores your raw account password in Chrome sync when remember password is selected.

This extension lets you set a custom browser geolocation value for websites.

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

This extension changes your voice for web apps that use your microphone or audio capture device.

CocoShot lets any website request and receive your camera and microphone device list through its permissions page.

Simulates different types of colorblindness on websites for accessibility testing.

ČSOB Electronic Signature reads session cookies from CSOB and ICA banking pages and forwards them to a local native PKI service.

Gets the CSS applied to a selected web element and its descendants in one click.

View the CSS code used for specific elements on a web page.

Calendar Dark Mode can load Google Fonts when its optional monospace font add-on is enabled.

Canvas+ sends its settings and install metadata to a Google Forms survey after a user clicks the survey prompt.