Privacy
Original text stays in the browser; analytics stop at the page.
This is a product boundary, not a vague promise: there is no route that submits chat text to the server, and export images are generated locally.
Not collected
Original chat, sender names, message times, file contents, generated results, and downloaded images are never sent to or persisted on our servers.
Visit analytics
When first-party analytics is enabled, it aggregates site, public path, referrer domain, country or region code, and device category by date. No IP, full referrer, or raw User-Agent.
No ads loaded
Echo Yearbook pages do not load AdSense scripts or create ad slots. Chat input is never sent to advertising services.
Your responsibility
Do not enter third-party records you cannot process, and avoid exposing visible original text in screenshots. Review even anonymous cards before publishing.