Your lesson stays
on your device.

The checker has no file-upload endpoint. Analysis and repair run locally in your browser.

What stays local

File bytes, file names, lesson content and diagnostic results are held in browser memory. We do not send them to an AI service or a remote scanner. The checker does not execute JavaScript or render HTML contained in an H5P package.

Downloads and reports

Repaired packages and reports are downloaded only when you request them. Reports contain file names, paths, titles and library versions. Review them before sharing with anyone. Your browser and operating system control how downloaded files are retained.

Ordinary website traffic

Our VPS and Cloudflare handle requests for website pages and assets. They may log IP addresses, requested URLs, browser information and timestamps for delivery and security. Do not put private lesson information in URLs. This MVP sets no application cookies, uses no advertising trackers and does not save your package in browser storage.

Clear the current file

Use “Clear file” after a scan or close this tab to release the package held by the application. Downloaded copies remain on your device until you remove them.