# Extension Tracker > A public record of the Chrome Web Store: every extension's users, ratings, versions, permissions and changes over time, for researchers and journalists. It isn't affiliated with Google. - 292,130 live extensions tracked; data last refreshed on 13 Nov 2026 (UTC). History starts on 26 September 2026, when tracking began. - The site reports facts, such as permissions, changes and removals, not whether an extension is safe. An extension counts as removed once it has left the store's daily lists and the store no longer offers it. - Pages leave out full descriptions, screenshots, reviews and developers' contact details. - The data is free to reuse under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/), crediting Extension Tracker. Every extension page has a citation to copy. - Bulk data: a new set of Parquet and CSV files every Sunday at https://data.extensiontracker.com/, and https://data.extensiontracker.com/latest.json describes the newest. Please use them instead of crawling the pages. Notebooks that read them, for Colab, Kaggle and Jupyter: https://github.com/WebIterate-Dev/extension-tracker-notebooks - AI agents and assistants are welcome. When an answer uses the data, credit Extension Tracker and link the extension's page. - Content signals, as in robots.txt: `search=yes, ai-input=yes, ai-train=no`. Answering questions from the pages is welcome; training models on them isn't. - Contact: et@webiterate.dev, for corrections, takedowns and other questions (https://extensiontracker.com/contact). ## Look up an extension - Extension pages: `https://extensiontracker.com/extension/{id}`, where `{id}` is the 32-letter ID in the extension's Chrome Web Store address, for example `https://extensiontracker.com/extension/ddkjiahejlhfcafbddmgiahcphecmpfh` for uBlock Origin Lite. Each shows the users, rating, version, permissions, the change log and the developer's other extensions, with the figures behind the charts. - Developer pages: `https://extensiontracker.com/developer/{publisher_id}`, linked from each extension page. - Markdown: every page except search comes as Markdown too. Pages with data give the same facts in fewer words: tables for the figures and lists, the change log as dated lines, and the citation. Send `Accept: text/markdown`, or add `?format=md` to the address, as in `https://extensiontracker.com/extension/ddkjiahejlhfcafbddmgiahcphecmpfh?format=md`. ## Lists - [Home](https://extensiontracker.com/): recently removed extensions, the categories and the top lists - [Most users](https://extensiontracker.com/top/users): the 100 live extensions with the most users - [Fastest growing](https://extensiontracker.com/top/growing): the most users gained over 7 and 30 days - [Recently updated](https://extensiontracker.com/top/updated): the extensions updated most recently - [New extensions, day by day](https://extensiontracker.com/new/): extensions as they first appear in the store - [Removed extensions, day by day](https://extensiontracker.com/removed/): with their users when last seen - [Extensions flagged by Google](https://extensiontracker.com/flagged/): extensions that carry Google's malware, policy violation or potentially unwanted flag - [Account and contact changes](https://extensiontracker.com/owners/): extensions that moved to another publisher account or got a new contact email ## Categories - [Productivity](https://extensiontracker.com/category/productivity) - [Communication](https://extensiontracker.com/category/productivity/communication) - [Developer Tools](https://extensiontracker.com/category/productivity/developer) - [Education](https://extensiontracker.com/category/productivity/education) - [Tools](https://extensiontracker.com/category/productivity/tools) - [Workflow & Planning](https://extensiontracker.com/category/productivity/workflow) - [Lifestyle](https://extensiontracker.com/category/lifestyle) - [Art & Design](https://extensiontracker.com/category/lifestyle/art) - [Entertainment](https://extensiontracker.com/category/lifestyle/entertainment) - [Just for Fun](https://extensiontracker.com/category/lifestyle/fun) - [Games](https://extensiontracker.com/category/lifestyle/games) - [Household](https://extensiontracker.com/category/lifestyle/household) - [News & Weather](https://extensiontracker.com/category/lifestyle/news) - [Shopping](https://extensiontracker.com/category/lifestyle/shopping) - [Social Networking](https://extensiontracker.com/category/lifestyle/social) - [Travel](https://extensiontracker.com/category/lifestyle/travel) - [Well-being](https://extensiontracker.com/category/lifestyle/well_being) - [Make Chrome Yours](https://extensiontracker.com/category/make_chrome_yours) - [Accessibility](https://extensiontracker.com/category/make_chrome_yours/accessibility) - [Functionality & UI](https://extensiontracker.com/category/make_chrome_yours/functionality) - [Privacy & Security](https://extensiontracker.com/category/make_chrome_yours/privacy) ## About the data - [Methodology](https://extensiontracker.com/methodology): sources, how often each extension is checked, and what counts as removed - [Trusted by Enhanced Safe Browsing](https://extensiontracker.com/enhanced-safe-browsing): what Chrome's trust status for extensions means, and how it was spread on 1 October 2026 - [Status](https://extensiontracker.com/status): the latest runs and the coverage of the store - [About](https://extensiontracker.com/about): what the site does and doesn't do, and who runs it - [Data downloads](https://extensiontracker.com/data/): every extension's data in weekly Parquet and CSV files - [Terms of use](https://extensiontracker.com/terms): no guarantee of accuracy; reuse under CC BY 4.0 - [Contact and takedowns](https://extensiontracker.com/contact): corrections, and takedown requests from developers ## Optional - [Sitemap](https://extensiontracker.com/sitemap.xml): every page that search engines may index - [Privacy](https://extensiontracker.com/privacy): what the site records about visitors