QR Studio

WiFi, link, vCard & till-number QR codes — no watermark, no expiry

What should the code do?

Most phones join the network straight from the camera app (Android 10+, iOS 11+).

Scanning saves the contact to the phone. Only filled-in fields are included.

Scanning opens the dialler with this number ready to call.

Scanning opens the point in the phone's maps app. Tip: in Google Maps, long-press a spot to see its coordinates.

Beta — always do a test scan with the M-Pesa app before printing. This builds a CBK Kenya QR (EMVCo) payment code; support can vary by app version.

Preview

Style & export

Error correction lets a scuffed or partly covered code still scan: L recovers ~7% damage, M ~15%, Q ~25%, H ~30%. Higher levels make a denser code. M suits screens and most uses; pick Q or H for stickers and print that may get scratched.

Generated entirely on your device — nothing is uploaded, no watermark, no expiry, free for commercial use. SVG stays razor-sharp at any print size.

What's inside this code?

The exact text stored in the QR code — handy for debugging or pasting elsewhere:


        

Scanning & printing tips

Size: print at least 2 × 2 cm for arm's-length scanning — roughly 1 cm of code for every 10 cm of scanning distance.

Quiet zone: keep the light margin around the code. It is part of the standard; don't crop it or place graphics inside it.

Colours: a dark code on a light background scans best. Low-contrast or inverted (light-on-dark) codes fail in many apps.

Test first: scan the preview with two different phones before printing a batch — especially M-Pesa codes (beta).

Engine: codes are generated locally by a faithful JavaScript port of Project Nayuki's MIT-licensed QR Code generator library. Nothing leaves your device.

Everything happens in your browser — nothing is uploaded, no account, no watermark, and your codes never expire.