Browser extensions starting with C
907 browser extension security reviews, listed by name.
ComedyTab
Explore
MediumComedyTab sends new-tab search queries and partner identifiers to find.wsrc-now.com.
Comment Scraper
Freja Cychosz
CleanComment Scraper replays Facebook GraphQL requests to export comment text, author details, attachments, and timestamps.
Competition Meter
Competition Meter
MediumCompetition Meter sends product images to Google Cloud Vision when users click its Inspect Product button.
Contextual translator
N10
CleanContextual translator opens Google Translate with selected text embedded in the page URL.
Control for Transmission
Jackie(Guokai) Han
CleanControl for Transmission sends Basic Auth credentials to user-configured Transmission RPC endpoints over HTTP.
Convert PDF to DOCX
Convert PDF to DOCX
CleanConvert PDF to DOCX uploads user-selected PDFs and profile metadata to convertpdftodocx.com for conversion.
Core SERP Vitals
defaced
CleanCore SERP Vitals sends Google search result URLs to the Chrome UX Report batch API.
Cristiano Ronaldo CR7 Iconic Gaze with Red Backdrop Live Wallpaper
Ovkas
LowCristiano Ronaldo CR7 Iconic Gaze sends saved new-tab shortcut URLs to Google's favicon service.

Check4Change
Ronen Zilberman
MediumCheck4Change sends monitored page URLs and selected page text to check4change.com for VIP email alerts over HTTP.

Clipboard2File (Upload From Clipboard)
Clipboard2File
CleanClipboard2File reads clipboard images or text after file-input clicks and prepares them as files for upload.

Cookiebro - Cookie Manager
Nodetics
CleanCookiebro sends cookie domain names to DuckDuckGo when it displays remote favicons in cookie editor and log pages.

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

Calculator Whiz & Custom Web Search
Calculator Whiz & Custom Web Search
CleanCalculator Whiz & Custom Web Search sends homepage search terms to Yahoo Search.

Claude Usage Tracker
lugia19
MediumClaude Usage Tracker stores Claude prompt and request details in local debug logs whenever it runs.

Speed Booster for ChatGPT – Fix Lag & Export
BGSN
LowSpeed Booster for ChatGPT changes ChatGPT page rendering to keep long conversations responsive.

CopyTables
Nirantak Raghav
CleanCopyTables reads selected table content and clipboard HTML to format copied tables locally.

Cookie Clicker Mod Manager
klattmose
CleanCookie Clicker Mod Manager injects user-configured remote mod scripts into Cookie Clicker pages.

CopyTabTitleUrl
toshi
LowCopyTabTitleUrl reads the active tab's document.cookie when its scripting copy option is enabled.

Capture EndNote Reference
Filippo
CleanThis extension launches EndNote’s reference capture process from article webpages.

ContextSearch web-ext
Mike B
LowContextSearch web-ext lets web pages prompt users to save attacker-supplied search templates through its add-engine page.

cda_downloader
Undefined
MediumCDA Downloader opens short.ovh tabs during most CDA.pl link clicks and some download clicks.
C8KE
C8KE.com · Social & Communication
CleanC8KE captures selected page image details and checks its S3 store-domain config for the page domain.
CATS Extension
CATS Applicant Tracking
CleanCATS Extension's bug-report feature can send the full HTML of the active recruiting page to a third-party upload endpoint.
CB Insights: Browser Analyst
CB Insights
CleanCB Insights: Browser Analyst sends the active page hostname to CB Insights for organization lookup.
CF College Standings
praveennooka123
CleanCF College Standings reads Codeforces profile and standings data to update organization lists and cache country ranks.
CMG Hacks
Theo's Tech Tips · Games
LowCMG Hacks sets a Coolmathgames premium-play cookie and modifies Coolmathgames game pages to skip ad UI.
CONTADU NeuronWriter - SEO/NLP optimization
CONTADU
CleanCONTADU NeuronWriter sends Google Docs, WordPress, and Shopify editor content into its CONTADU optimization iframe.
CR Dual Subtitles - Subtitle Translator
revja0189
LowCR Dual Subtitles sends Crunchyroll tab details and subtitle translation text to Amplitude during translation.
CallHippo-Virtual Phone System
CallHippo
MediumCallHippo-Virtual Phone System lets any webpage open its dialer popup for a chosen phone number.
Canopy GUI Enhancer
Mattia Basone
MediumCanopy GUI Enhancer sends hovered MAC addresses from Cambium admin pages to maclookup.info as executable JSONP.
Canva Premium Remover
micaux.nicolas
LowCanva Premium Remover stores persistent hashed Canva account identifiers in browser sync storage.
Canvas files Downloader
Abdulrahman A
LowCanvas files Downloader lets any course-shaped page trigger extension-privileged file downloads.
CaptainFact
CaptainFact · News & Weather
CleanCaptainFact sends matching YouTube video URLs to graphql.captainfact.io to load fact-checking statements.
Capture Full Page - Screenshot Editor
capturefullpage
CleanCapture Full Page - Screenshot Editor captures user-requested page screenshots and opens them in an in-page editor.
Caramel - Trusted Honey Alternative
Devino · Shopping
CleanCaramel sends Amazon cart product-title keywords to grabcaramel.com when applying coupons.
Card Bookmarks
KK YUAN
LowCard Bookmarks uploads cloud-synced bookmarks and tab backups to aa-zz.cn and records page visits locally.
Cats-Kittens
Triplex-Media
MediumCats & Kittens Wallpapers sends new-tab search terms to search.cats-wallpaper.com.
Celonis Task Mining Browser Extension
Celonis Task Mining
LowCelonis Task Mining captures clicks, clipboard text, and form input on every page and sends them to a local desktop client over a WebSocket.
Chapax - Universal AI agent
chapax
LowChapax lets webpages trigger its screenshot capture flow and uploads selected screenshots to app.chapax.ai.
Chat AI for Chrome
CleanChat AI for Chrome makes chataiforchrome.com the default search provider and tags requests with extension cookies.
Chat Assistant For TT
noahabigail365 · Social & Communication
LowChat Assistant For TT sends usage events with a persistent UUID and browser metadata to Aliyun SLS.
ChatDOC: PDF AI Reading Assistant
ChatDOC
CleanChatDOC uploads PDFs you open with its page button to ChatDOC-controlled storage for chat processing.
ChatGPT Browser Extension
Taylor Hawkes
CleanChatGPT Browser Extension sends Google search queries to OpenAI and CodeGrepper for answers and caching.
ChatGPT Exporter: Save ChatGPT to Word, PDF, Docs, Notion
backrun
LowChatGPT Exporter sends user-triggered ChatGPT exports and Notion export tokens to backrun.co.
ChatGPT Search & fan-outs capture 5.1.2
olivier
CleanChatGPT Search & fan-outs capture 3.4 stores captured ChatGPT conversation streams in extension-local storage.
ChatPDF - ChatGPT to PDF
carl007766
CleanChatPDF - ChatGPT to PDF sends the active ChatGPT page HTML to a localhost PDF service when you export.
Check Broken Links
check.broken.links.extension
CleanCheck Broken Links sends scanned page URLs and broken-link details with a persistent UUID to hackcrafted.com.
Check Trustpilot
NivagWoh
CleanCheck Trustpilot sends each active tab's hostname to Trustpilot to fetch and cache review ratings.
Checklist
CleanChecklist sends user-entered checklist and section names to Amplitude analytics.
Chorus - Spotify Enhancer
Charles Drani
CleanChorus - Spotify Enhancer captures your Spotify Authorization header and reuses it for Spotify API and playback requests.
CiteMaker CiteWeb | MLA 8th Edition
CiteMaker
MediumCiteMaker CiteWeb sends login credentials to citemaker.com using GET requests.
Claude Token Counter
Krishna Somani
CleanClaude Token Counter reads Claude organization, usage, and conversation data on claude.ai to calculate local token metrics.
Claude to Obsidian & Markdown Export
Aluo
CleanClaude to Obsidian & Markdown Export sends save and sync activity logs to chatgpt2notion.com.
Claude to PDF
digital_tools
CleanClaude to PDF saves Claude conversations as local PDF downloads using Chrome's debugger API.
ClicSpy
ByScaling S.A.S
CleanClicSpy sends saved Facebook Ads Library ad-card details to nodeapi.tueducaciondigital.site.
Clipboard History
Fast Simple Apps
CleanClipboard History stores text copied from any website, including selected password-field text, in Chrome sync storage.
Clippy Assistant
Kickass · Fun
LowClippy fetches remote comment text and renders matching messages as HTML on pages where its content script runs.
Clock Tab
Alexx
CleanClock Tab can display Chrome Top Sites URLs and page titles on its new-tab page for local shortcuts.
Close Tab
Hansifer · Functionality
LowClose Tab loads a Buy Me a Coffee badge from cdn.buymeacoffee.com when you open its options page.
CloudCall
CloudCall · Communication
CleanCloudCall scans webpages for phone numbers and sends matched numbers to CloudCall's GraphQL API.