Terms of use

Last updated 8 November 2026

PatternProof is a service operated by Ettix.

What PatternProof does

PatternProof inspects PDF files in your browser and reports page sizes, on-screen measurements of a calibration square you mark, and a pixel-based estimate of artwork near a printable margin you choose. It is a checking aid. It does not modify your files.

Accuracy

On-screen measurements are limited by display resolution and where you click; uncertainty is shown with each result. Margin results are estimates from a rendered image and can miss very light artwork or flag intentional elements. Printers and print settings vary. You remain responsible for your patterns: always print a test page at 100% (“Actual size”) and measure it before relying on any result.

Free use

The single-PDF checker and its one-file CSV report are free, within the stated limits (20 MiB and 120 inspected pages per PDF).

Batch Pass

• The Batch Pass costs US $9, charged once through Square or PayPal. It is not a subscription and does not renew.
• It unlocks multi-format review exports (up to three PDFs per review) for 30 days from the time of payment, in the browser where the payment was completed. It is stored in a cookie; clearing cookies, using private browsing or switching browsers or devices will not carry it over.
• No account is created. If something goes wrong with a payment or your pass, contact us with the approximate time and payment provider.

Acceptable use

Don’t attempt to disrupt the service, bypass payment, or use it to violate others’ rights. Only check files you have the right to use.

Contact

Ettix — Contact Ettix