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 OSAnalytics and your choices
Google Analytics measures page visits and tool openings. Visitors in the EEA, UK, Switzerland, mainland China, Canada, South Korea, and Türkiye are asked first; other identified regions start automatically. A previous refusal, GPC, or Do Not Track takes precedence. Tools work with either choice.
We use same-site Cloudflare connection information to determine the country or region, not your language, and do not save the IP address in the lookup. If the lookup fails, the Google tag still starts with regional consent defaults: analytics cookies in consent-required regions await permission, while Google may receive basic cookieless signals. Automatic startup is not recorded as your explicit consent.
Files, filenames, tool inputs, search terms, URL parameters, fragments, and results are excluded. Page names use fixed paths and referrers contain only the source site. Google processes visit identifiers and technical browser information. Enhanced measurement, Google signals, and ad-personalization measurement are disabled.
Turn analytics on or off through Privacy & analytics in the footer. Explicit choices are shared across enabled pages in a .miluland.com cookie for up to 180 days; automatic startup does not save an accepted choice. Turning it off stops this integration and clears accessible GA cookies. Advertising uses separate consent settings.