An audio QR code plays sound when scanned: a voice message on a gift, a song on an event invite, a guided description next to a museum piece, or a pronunciation on a classroom poster. A QR code can't hold audio itself (it stores only a few kilobytes), so every audio QR code is really a link to a page or file that plays the sound. What matters is where that sound lives.
Option 1: Link to a song on a streaming service
For a published song, copy its Spotify, YouTube Music or Apple Music link and turn it into a QR code. The scanner needs the app or an account for some services, and the link opens the service, not a personal page. Spotify also has its own scannable “Spotify Codes” that work only inside the Spotify app.
Option 2: Link to a file in cloud storage
Upload an MP3 to Google Drive or Dropbox, set sharing to “anyone with the link” and make a QR code for it. It works, but the file opens in a file viewer, some phones download it instead of playing it, and if the file is moved or sharing changes, the code stops working.
Option 3: A page made for listening
A gift message QR code opens a page with a play button, alongside your message and photos. You can record a voice note straight in the browser or upload a song or MP3, and change it later without reprinting.
Formats that play everywhere
- MP3 and M4A (AAC) play on practically every iPhone and Android browser.
- Voice notes recorded in a browser are usually WebM (Chrome, Android) or M4A (Safari, iPhone). Modern phones play both; very old iPhones may not play WebM.
- WAV plays, but files are large; prefer MP3 for long recordings.
Keep it short
People listen to audio QR codes standing up, often somewhere noisy. Thirty seconds to two minutes works best. Say the most important thing first.
Printing tips
- Add a cue next to the code: “Scan to hear a message from us 🔊”.
- Print at least 2.5 cm wide, dark on light, with a clear margin.
- Test on an iPhone and an Android phone, with the sound on and off, before printing in bulk.