Privacy

No account, upload, title, or identifier

The worksheet runs locally in the browser. It accepts coarse state choices, does not upload a book or access an account, and does not send your selected answers. Closing or reloading the page clears the worksheet choices.

Analytics is optional

The worksheet works if you decline. On a public diagnostic page, choosing “Allow for this tab” permits Yandex Metrica to receive a page view and event names: tool_start, tool_complete or unknown_result. A completion means a source-bounded next check was returned after a deliberate interaction, not that a device was repaired. Unresolved results are reported separately, never as successful completions.

Our event calls contain no selected values, device model, title, author, account details, file contents or result text. The analytics provider can still receive technical data such as IP address, browser information and cookies; this is not a promise of anonymous processing. We disable session replay, click maps and automatic link tracking, and send a URL without query parameters or a fragment.

Your choice and test traffic

The choice and event-deduplication flags are kept in session storage for this browser tab. They contain no worksheet values. “No thanks / turn off” withdraws permission and, if analytics already loaded, reloads the page to unload it. If storage fails, measurement stays disabled. Do Not Track, Global Privacy Control, automated-browser and QA signals also disable measurement. Support pages do not initialize analytics.

Engagement is optional and is not counted as organic search traffic. Search impressions and clicks are measured separately by search-engine webmaster tools. No advertising, account access, book-file processing or purchase is performed here.