# How do I know an automatic backup worked?

Look at "Recent backups" in Settings > Backup > Automatic. A good backup has a green tick and the word "Checked": PrivacyNotes opened the file again with your key before it saved it, and then read the saved copy back from the folder to make sure it matches byte for byte.

A backup that fails a check is not kept, your older copies stay, and the app tells you why, for example that the folder is not there. "No changes, nothing written" means [nothing changed since the last backup](https://privacynotes.app/help/backup-no-changes), so no new file was needed. To test a file yourself, [restore it](https://privacynotes.app/help/restore-backup): a restore into the same account changes nothing.

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Source: https://privacynotes.app/help/backup-checked