Browser learning tools
The hand comparator calculates in the page. It does not create an account or send card selections to a server. The file-digest helper reads only the file you select and uses the browser’s cryptography API. It does not upload the file or retain its bytes after the page session.
Cookies and local storage
This edition sets no cookies and uses no local storage, advertising tags, analytics service or third-party font requests. Navigation, local illustrations and stylesheets are served as ordinary files. A hosting platform or changes added after delivery can change that behaviour.
Hosting information
Web servers and delivery networks may receive an IP address, request URL, timestamp, user agent and technical error information. The operator has not supplied its hosting provider, log retention period or public privacy contact. Those details must be completed before publication; no retention period is invented here.
External links
Following an external reference contacts the destination site, which has its own policies. This package uses a conservative referrer policy. No third-party page is embedded into the local tools.
Information you should not send
Do not send APK account passwords, OTPs, identity documents, card details or bank information to this site. There is no account-support form or payment function. The contact page explains the current editorial channel limitation.
Operator responsibilities
The publishing operator must supply its real identity, working privacy contact and relevant hosting disclosures, and reassess this notice when adding analytics, forms, advertising or a live download destination. The implementation described here must be checked against what is actually deployed.