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FlashBoards stores your media in browser storage. This is fast, but it is not the same as guaranteed cloud backup.
When local media storage starts, FlashBoards asks your browser to protect that data from automatic cleanup.
If the browser denies that request, we show the info notification: "Browser storage may not persist between sessions."
This does not mean your files are already lost. It means the browser may clear site data later under storage pressure or browser policy.
Chrome and Edge decide this automatically. There is no direct switch that guarantees your site will be marked as fully protected.
You can still reduce eviction risk by allowing site data for FlashBoards:
Even after this, FlashBoards may still show the info message in some cases. That can be normal in Chrome/Edge, and the allowlist still helps.
Firefox typically asks directly when a site requests persistent storage.
Safari does not provide the same persistent-storage flow. Site data can be cleared based on browser policy, especially for inactive sites.
1. Keep using FlashBoards normally. This notification is preventive.
2. Apply the browser steps above (especially Chrome/Edge site data allowlist).
3. For important work, use backup tools regularly:
4. Cloud sync is in progress and will become the primary protection path once fully available in production.