It reads here, but my handheld scanner fails.

Reading in software and reading in a warehouse are different problems. Your photo is probably sharper, closer and better lit than the aisle. Check module (bar) width and the quiet zone first: a barcode printed too small or too near the label edge often decodes on screen and fails in the field.

Nothing was read at all — is my label broken?

Not necessarily. Angle, focus, glare and low contrast defeat the decoder before the label does. Shoot straight on, fill the frame with the label, avoid flash reflections on glossy media, and try once more before blaming the print.

Is this an ISO/IEC 15416 barcode quality grade?

No, and it does not claim to be. A grade (A–F) requires a calibrated verifier with controlled optics and lighting. This tool answers a narrower, more practical question: does a common software decoder get your data back?

Barcode Verifier

Upload a photo or scan of a printed label and read back the barcodes on it. Useful for checking that the printed data matches what you intended to encode.

Choose an image:

Format	Data

This is a software decoder (zxing) result: a successful read does not guarantee every handheld scanner will read the label, and a failed read does not prove the label is faulty — photo angle or focus may be insufficient.

How to check a printed barcode

Choose a photo or scan of the printed label. PNG, JPEG, BMP and GIF are accepted, up to 5 MB and 6000×6000 pixels.
Press Verify. The image is decoded on the server and is not stored afterwards.
Every barcode found is listed with its symbology and the exact data it carries.
Compare that data with what you meant to encode — a check-digit typo or a truncated GTIN shows up immediately.

When this is the right tool

Use it when you introduce a new label design, after changing printer, ribbon or media, when accepting labels from a supplier, or when a customer tells you "your barcode does not scan". It answers one question: can a decoder read what your printer actually put on the paper? To check the ZPL before printing, use the ZPL preview and its diagnostics instead — there the input is code, here it is the printed result.

Common questions

It reads here, but my handheld scanner fails. — Reading in software and reading in a warehouse are different problems. Your photo is probably sharper, closer and better lit than the aisle. Check module (bar) width and the quiet zone first: a barcode printed too small or too near the label edge often decodes on screen and fails in the field.
Nothing was read at all — is my label broken? — Not necessarily. Angle, focus, glare and low contrast defeat the decoder before the label does. Shoot straight on, fill the frame with the label, avoid flash reflections on glossy media, and try once more before blaming the print.
Is this an ISO/IEC 15416 barcode quality grade? — No, and it does not claim to be. A grade (A–F) requires a calibrated verifier with controlled optics and lighting. This tool answers a narrower, more practical question: does a common software decoder get your data back?

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