Last updated: August 26, 2026
TeXbrain is a browser-based LaTeX editor. Your documents are processed entirely on your device. We do not collect, store, or transmit your documents or personal data to any server.
TeXbrain uses your browser's storage (localStorage, IndexedDB, Cache Storage and the origin private file system) to cache TeX Live packages, keep your editor preferences, and to hold projects, including their git history, created in browsers without direct folder access. For projects opened from a folder on your disk, git keeps its data in that folder. Git credentials you enter are kept in localStorage. None of this leaves your browser and all of it can be cleared at any time through your browser settings.
When you open a project folder, TeXbrain accesses files through the browser's File System Access API. Files are read into memory for editing and compilation. No file data is uploaded to external servers.
We do not use tracking scripts, analytics services, or advertising networks.
A few things do involve other servers. None of them receive your documents.
Fonts. The interface loads fonts from Google Fonts during page load. Google's privacy policy applies to that request.
TeX Live packages. Packages that aren't bundled with the app are fetched from public mirrors the first time a document needs them: a TeX Live tree on jsDelivr and, as a fallback, a community TeX Live server. Only the file names of the packages are requested, never your document content. Fetched files are cached locally, so this happens once per package. The fallback server can be changed or disabled through the texliveMirror preference.
Git remotes. Browsers can't talk to git servers directly, so clone, push and pull go through a CORS proxy (cors.isomorphic-git.org by default). Repository data and the credentials you enter pass through that proxy on their way to your git host. You can point TeXbrain at your own proxy in the git panel.
Diagrams. Opening a .drawio file embeds the diagrams.net editor from embed.diagrams.net. The diagram is handed to that editor inside your browser and diagrams.net's privacy policy applies to the embed. Nothing is loaded from there unless you open such a file.
TeXbrain does not use cookies. Theme and editor preferences are stored in localStorage.
We may update this policy from time to time. Changes will be reflected on this page with an updated date.
For questions about this policy, contact us via GitHub.