Local processing
When you choose a file, browser File APIs read it directly on your device. Comparison and parsing run in the page. PrintDiff does not provide or call a server upload endpoint for file contents.
Exports
Copying or downloading a summary is initiated by you. The generated summary is created locally and may contain selected settings, metrics, or changed G-code rows from your comparison.
Site measurement
PrintDiff uses Cloudflare Web Analytics for aggregate page visits and performance, plus Cloudflare Analytics Engine for anonymous product events. Product events record only the tool type, action (such as comparison started, completed, failed, copied, or downloaded), a broad file-size range, and a coarse error category. They do not include file names, file contents, comparison results, IP addresses, account identifiers, advertising cookies, or cross-site profiles. Product-event data is retained for up to three months.
Your control
Close or refresh the page to clear the active comparison from memory. PrintDiff does not store your selected files in browser storage.