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File processing runs in your browser. Documents are not uploaded to our servers. The site may download processing engines and send usage or feedback events without file contents.

How we handle your data

Local text utility

UPC-A validator

Check a 12-digit UPC-A check digit. UPC-E is not supported.

Text stays in your browser.

Try an example

The input above starts with this sample:

036000291452

Run the tool. The result should contain:

yes