Barcode Studio

Generate

Barcode type Text / data to encode

Samples use fake data for testing. Avoid uploading real personal/ID data.

Scale Height (mm) (1D only)

Show human-readable text (1D) Add quiet-zone border (2D)

Secure Signed QR (recommended)

This creates a QR code containing a signed token (so copied/edited codes fail verification). Keep the barcode payload minimal (e.g., an internal ID), and store sensitive info in your database.

Issuer (your organization) Card type Unique ID (required) Display name (optional) Expires on (optional)

Signed token (copy/paste)

Verifiers only need the public key to validate tokens. Keep the private key secret.

Tips to keep codes scannable

For 1D codes, increase scale if scans fail.
For QR/Data Matrix/PDF417, keep a clear quiet zone (border) around the code.
Test with multiple phones/scanners before printing in bulk.

Preview

Scan with camera

Works best in Chrome/Edge. Allow camera permission when prompted.

Camera

Samples use fake data for testing. Avoid uploading real personal/ID data.

Result

Verify signed token

If the scanned text is a signed token, the app will verify it and show the decoded payload.

Decoded payload (JSON) Public key currently loaded (Optional) Paste token here to verify

Camera preview

NFC (optional)

Uses Web NFC (mainly Chrome on Android) and requires HTTPS (GitHub Pages works).

NDEF text to write

NFC read output