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MRZ Checker

Paste a machine-readable zone to verify every check digit and field — TD1, TD2, TD3, MRV-A and MRV-B, entirely in your browser.

Everything runs in your browser — nothing is sent to any server.
Read MRZ from image

Pick a photo of a passport or ID card — the MRZ zone (the 2–3 bottom lines) must be legible. Processing happens entirely in your browser.

About MRZ

The Machine Readable Zone (MRZ) is the standardized block of characters printed at the bottom of passports, ID cards and visas, defined by the ICAO 9303 standard. This tool follows the open-source mrz library (github.com/Arg0s1080/mrz) and supports the TD1, TD2, TD3, MRV-A and MRV-B formats. Everything is computed locally in your browser.