# mboxreader > Browse a Gmail (Takeout / mbox) backup locally in your browser. Your mail data never leaves your device. mboxreader is a local-first tool for opening and reading Gmail (mbox) exports. File parsing, search, and storage all happen in the browser via IndexedDB and web workers; signing in only raises the upload size limit. ## Pages - [Home](http://mboxreader.com/): Open a Gmail backup — drop or choose an .mbox/.zip/.tgz/.gz file to load it locally. - [Mail](http://mboxreader.com/mail): Read, search, and browse the loaded mailbox by thread and label. - [Settings](http://mboxreader.com/settings): Adjust how the viewer looks (theme, density); these persist across sessions. ## Account - [Sign in](http://mboxreader.com/login): Sign in or sign up to unlock a larger upload limit.