How to use Barcode Scanner
- Drop your value into the field at the top of Barcode Scanner.
- Tune the Scan an image control before you process.
- Hit Start camera — the processed output appears below at once.
- When it looks right, Copy to save it.
About this tool
Barcode Scanner is a static, client-side tool with no backend. Barcode Scanner encodes your text into a QR matrix locally with an open-source library and renders it to a canvas.
Higher error-correction levels (Q or H) survive damage or partial cover at the cost of denser modules; level M suits most links. It behaves the same on desktop and mobile, with nothing stored remotely.
Frequently asked questions
How do I use Barcode Scanner?
Barcode Scanner lets you process your input right in the browser using the Scan an image control, with the result shown instantly and nothing uploaded.
Does Barcode Scanner cost anything?
No — Barcode Scanner is completely free, with no sign-up and no hidden limits.
Does Barcode Scanner upload my data?
No — Barcode Scanner processes everything locally in your browser, so nothing you enter is uploaded or stored.
Which error-correction level should I pick in Barcode Scanner?
Level M suits most links. Choose Q or H in Barcode Scanner if the code may be printed small, curved, or partly covered.
Can I use Barcode Scanner without a connection?
Yes — after the first load Barcode Scanner runs entirely offline.