PRIVACY · YESTERDAY OS
Some memories belong on this device alone.
Yesterday OS notes, snapshots, time capsules, and workspace restore all run locally in your browser. They are not automatically uploaded to MiluLand servers.
What persists automatically
Notes are written to this site's localStorage as you type; manual snapshots are capped at five. A sealed capsule stores its opening date and full message and hides the message from the field until that date, but this is not encryption: anyone who can access browser storage or a workspace backup may still read it. Clearing site data removes these records.
Date, sound, and backup boundaries
Capsules use the device clock and an ISO/UTC calendar date to decide when to open, so a wrong clock or time zone—or being near midnight—can differ from your expected local date. Dial-up sound is synthesized locally with Web Audio only after you press Dial; it does not access a microphone, modem, or network. TXT contains the current note, while a JSON workspace backup contains note, snapshots, and capsule text. Imports are capped at 256KB and structurally validated; review backups before sharing.
Local storage, favorites, and backups
Language, theme, high contrast, notes, up to five note snapshots, and the time capsule are stored in your browser; these display preferences and up to 16 favorite tool IDs also use .miluland.com domain cookies. Favorites never contain inputs, files, or results, can be cleared from the MiluLand tool directory, and are not intentionally uploaded. A workspace backup downloads only when you export it, and imported files are read only in the current page; you can clear local data in browser settings at any time.
Advertising and third-party requests
This site uses Google AdSense Auto Ads. Google may use cookies or similar technologies under its policies; notes, snapshots, capsules, and backup contents are not intentionally provided to the ad system. Other users of a shared device, browser extensions, or your downloads folder may still see the content.
← Back to Yesterday OSOptional analytics
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