Encode & decode
Encode and decode more data than a single QR can handle.
Multi-QR Encoder & Decoder lets you convert large text into multiple QR tiles combined into a single image, then restore it back. Use optional passphrase encryption and SHA-256 integrity checks for peace of mind.
At a glance
- • Encode large text into a single image containing multiple numbered QR tiles.
- • Decode the same image later to recover the original text inside the app.
- • Optional encryption using a passphrase so only you can decode the content.
- • Built-in SHA-256 integrity check to detect corruption or tampering.
Ideal for text payloads. Recommended range: 15k–50k characters, with practical support up to around ~100k.
Passphrase encryption
Encrypt the entire payload with a passphrase before it’s split into chunks and encoded into QR tiles.
Multi-QR tiling
Bypass single-QR limits by distributing data across many numbered QR codes inside one combined image.
Integrity verification
Every decode recomputes SHA-256 and verifies it against the stored hash before returning your text.
How it works
- 1. On the app page, you paste long text into the encoder.
- 2. The app wraps your text with a SHA-256 checksum and (optionally) encrypts it using your passphrase.
- 3. The payload is split into chunks and each chunk becomes an individual QR tile.
- 4. All tiles are combined into a single PNG image with numbered QR tiles for easier management.
- 5. Later, you upload that big QR image back into the app to decode, decrypt, verify, and recover the original text.