Export, Storage & Drive
Projects and Local Storage
Understanding Origin Private File System (OPFS) storage, the 3-project quota, and protecting your work.
3 min read•Last updated: September 2026
Origin Private File System (OPFS)
Explayner stores your active project files locally on your device using the browser's Origin Private File System (OPFS), with IndexedDB as a fallback. This keeps editing blazing fast and private.
Quota & Sign-Out Warning
The local project switcher stores up to 3 concurrent projects.
Critical Notice: Signing out of Explayner deliberately wipes local project caches and media in that browser profile for data privacy. Always export an .explay file or sync to Google Drive before signing out!
Sign-Out Data Wipe
Signing out clears local browser storage. Download an .explay archive or click 'Save to Drive' before logging out of your account.