Contact · messaging · sms: URI (RFC 5724)

A text message, pre-written

The number and the message body go into the code. Scanning opens the messaging app with both filled in — the person only presses send.

Make this code now →

Opens the generator with this type selected. Everything happens in your browser.

Round WIA Code carrying an SMS with a pre-filled message
Rendered by the same engine as the generator. Point the WIA scanner at it — or a plain camera at the small booster QR in the middle.

What the code carries

An sms: URI (RFC 5724) with the number and an optional body. Ideal for "text KEYWORD to …" campaigns, RSVPs and support requests.

sms: URI (RFC 5724)

What happens when it is scanned

  1. The scanner reads the number and message from the code.
  2. It shows both on a card first.
  3. One tap opens the messaging app with the message ready; nothing is sent until the person taps send.

Why a WIA Code for this

The message body can be a full sentence — a same-size QR runs out of room quickly.
The person sees the exact text before sending; no hidden premium keywords.
Any silhouette: a speech bubble, a heart, your brand seal.

How much fits

Measured on the live engine (bytes of content, after error correction). The QR column is a standard QR code of the same printed size, for comparison.

GridWIA Code (bytes)Same-size QR (bytes)With booster QR
S · 64 modules · round23960—
M · 96 modules · round608151—
L · 128 modules · round11283221092

This page's example is 49 bytes. The booster QR is a small standard QR placed in the centre so phones without the WIA scanner still get somewhere useful — it leads to the web scanner, which then reads the full code.

Questions people ask

Is the message sent automatically?
No. The app opens pre-filled; sending is always a deliberate tap.
Does it work on iPhone and Android?
Yes; both understand sms: with a body.
Can I use it for a contest keyword?
Yes — put the keyword in the body and the short number in the number field.
Does a plain camera work?
The booster QR opens the web scanner, which then opens the messaging app.
Is anything logged by WIA?
No. The content is in the code and the phone handles it.
Make this code now →All kinds of content →

Other kinds of content

A business card the phone can saveScan to callAn email, ready to sendAll kinds of content →

WIA Code is a radial-symmetry 2D code. The content lives in the code; there is no server in between when it is scanned. Generated with the WIA Code engine · scannable · no account needed