Browser extensions starting with C

CoolStart loads third-party stylesheets and fonts whenever it opens its replacement new tab page.

Copies open tab URLs in formats such as text, HTML, and JSON.

Coursera Dual Subtitles sends Coursera page host, path, and title to Google Analytics when its subtitle overlay renders.

Compare two Salesforce profiles from Setup and view their access differences.

Creator Studio Extension lets MSN pages request your logged-in Medium RSS feed through its browser bridge.

Generates multiple credit card numbers for testing purposes.

Criminal IP: AI-based Phishing Link Checker sends visited HTTP(S) hosts to Criminal IP and DNS lookup endpoints.

Adds a Cristiano Ronaldo CR7 live wallpaper experience to the browser new tab page.

Cristiano Ronaldo Wallpaper loads Google Fonts from its new-tab page on each new-tab navigation.

Play a road-and-river crossing game in Chrome using keyboard arrows or a gamepad.

Select CrowdLog projects from Google Calendar or Outlook Calendar to reduce daily time-entry work.

Highlights the mouse cursor and clicks for screen sharing, recordings, and accessibility needs.

Shows HD puppy wallpapers whenever you open a new tab.

This extension adds the Cyber Soldier action game to Chrome for play without extra downloads.

cpdown reads the active tab's page content when you ask it to copy the page as Markdown.

Copy webpage elements as HTML, CSS, JSX, React, or Tailwind code from the browser.

Displays a toolbar country flag for the current website’s server location.

CyberGhost Cookie Cleaner shows whitelisted domains through Google's favicon service.

ClipSave Facebook Video Downloader opens clipsave.net with encoded Facebook video links when users click Download.

The extension scans page text on every site to detect adult content and records matching hostnames locally.

Claude Usage Tracker stores Claude prompt and request details in local debug logs whenever it runs.

Copies URLs and link text from links selected on a webpage.

Clipboard2File reads clipboard images or text after file-input clicks and prepares them as files for upload.

Pick color values from webpages and, with a helper app, from desktop apps and images.

Change Geolocation (Location Guard) injects code into pages to replace browser geolocation results with configured coordinates.

Country Flag + records each site's server IP locally and can send derived map coordinates to Yandex when enabled.

Provides Google Calendar reminders, quick event creation, and calendar views without opening the calendar page.

Shows a popup and notifications when the current site, product, or service has a Consumer Rights Wiki article.

Check4Change sends monitored page URLs and selected page text to check4change.com for VIP email alerts over HTTP.

CAD SCOUT 3Dfindit reads search text or page titles from visited sites and sends matching searches to PARTcommunity.

CFCA CertEnrollment.BOCD Extension lets approved BOCD banking sites talk to a native certificate host.

CFCA CertEnrollment.BankOfLuoYang Extension lets approved banking sites send native-messaging requests to a local host.

This extension lets Qingdao Bank business systems use X509 certificates from a USBKEY in Chrome.

CFCA CertEnrollment.XIBank Extension lets XIB pages choose a native messaging host and forward payloads to it.

This extension supports certificate application functionality in Chrome.

This extension removes the CNFans “risk reminder” from CNFans pages.

Searches CNRTL lexical resources from a simple browser search field.

CP Calendar fetches coding contest listings from the Clist API with an embedded API key.

CS2 Case Stats fetches Steam inventory history pages and stores parsed case-opening results locally.

Highlights page elements that match CSS selectors entered by the user.

Calcula impuestos para compras en USD y muestra la cotización oficial del dólar.

Customize Google Calendar with a user-selected background image.

Adds configurable labels to Google Calendar event colors for easier identification.

Redirects web page resources to custom URLs using organized rule groups.

Can I React? sends YouTube video IDs and channel URLs to api.canireact.com for reaction guideline lookups.

This extension edits videos and images in the browser with imports, timeline tools, overlays, filters, and exports.

This extension lets you play an HTML5 car racing game in Chrome.

This extension replaces the new tab with animated car live wallpaper and quick-access tools.

This extension lets users change a webpage’s character encoding to fix garbled text.

Forces KaTeX formulas and code blocks to display left-to-right in right-to-left language contexts.

ChatGPT Translator sends text entered in its popup to OpenAI for translation.

ChatGPT and AI Detector by ZeroGPT.cc sends selected page text to zerogpt.cc when its popup opens.

Replaces the browser’s new tab page with OpenAI’s ChatGPT.

ChatGPT to PDF sends ChatGPT conversation HTML and page metadata to chatgptpdf.tech when exporting PDFs or DOC files.

ChatPDF - AI for Documents loads a remote Imgkits image on matched PDF pages, sending normal request metadata.

ChatSearch: ChatGPT for Search Engine (GPT4) logs search prompts with IP-derived fields and a UUID to Alibaba Cloud.

The extension lets TikTok and Instagram page scripts request downloads and settings changes through its message bridge.

Checklist sends user-entered checklist and section names to Amplitude analytics.

Shows chess player win/loss/draw counts and average accuracy stats.

Christ-Centered sends precise browser geolocation coordinates to OpenWeatherMap for its new-tab weather widget.