Most free QR code sites have a catch. Some put their watermark in your code. Some show ads to the people who scan it. Many make a “dynamic” code that runs through their server, then switch it off when the trial ends, after you’ve printed it.

Thumbs QR does it the plain way. Your code holds your link, your Wi-Fi details or your contact itself, so it never expires and nobody can turn it off. It’s made on your own device, so nothing you type is uploaded, and it works in airplane mode. Before you save, it checks the code reads back, and tells you how big to print it. Here’s how we keep it private.

Thumbs QR is part of the Thumbs family, with Thumbs Photo for photos, Thumbs PDF for documents and Thumbs Text for fancy text.