Privacy

Short version: your files never leave your device, and we do not track you.

Your files

PDFs you open here are read by your own browser with pdf.js and compared on your device. They are never sent to our servers or anyone else. Closing or reloading the page discards them.

What we count

• Which pages are visited, the website that sent you (only its name), and your device type.
• Your approximate location (country, region, city) as reported by our hosting provider. We do not store IP addresses.
• Unique visitors per day, using a code our server derives from your IP address and browser that changes every day. Nothing is stored on your device, and there are no cookies.
• That a comparison happened, with rough numbers only (for example "3 documents, 21-100 pages"). Never file names or content.

Search engine and AI crawler visits are counted separately. The site stores one thing in your browser only if you ask for it: the opt-out flag set by visiting any page with ?notrack=1.

Who runs this

fairtools is run by Mikkel Aagaard in Germany. The site is hosted by Vercel; the visit counts are kept in a Supabase database. Questions: hello@fairtools.org.