About Mark

Local-first, for this job only

Encoding a URL looks harmless until the URL is a staging site, a WiFi PSK, or a phone number. Sending that string to a SaaS so they can draw black squares is a bad trade. Mark keeps the trade on your device: JavaScript encoder, Canvas, a file download. No account. No watermark. No daily credits.

What this site does

It draws static QR codes for URL, text, WiFi, vCard, email, phone and SMS. You can set colours, size, quiet zone and an optional centred logo with high error correction. Output is PNG, plus SVG when there is no logo. The preview is live. Empty input does not download a fake code.

It does not shorten links. It does not count scans. It does not let you edit a printed code later. It does not scan other people’s codes with the camera. Those are different products, and they need a server or a device API we are not wrapping here.

It will not stop you encoding a malicious URL. A QR code is not a character reference. If you print a trap, that is on you. We say this on the homepage because “custom QR” sites often skip it.

What we refuse to build into this free tool

Accounts, cloud history, “unlock SVG with email,” scan analytics, and a watermark we later sell you the removal of. Also not a watermark-removal product — that is a policy problem of its own. Mark is one utility with a stamp-like interface, not a suite of twelve identical landing pages glued together in this repository.

The interface is a generator first, then guides: how to encode, guest WiFi, print, events, troubleshooting, FAQ. Those pages exist so a reviewer (and a person) can read what the tool does in full sentences, not only stare at a dropzone. They are written for QR payloads, not copied from an image compressor.

Who operates it

Ultimatum operates Mark. Email ultaultimatum@gmail.com. There is a contact page with what to include. Custom software and paid websites are a separate conversation with Ultimatum.