Paste a Brazilian boleto digitable line (or barcode digits) to verify length, digit rules, and whether it looks like a bank or utility (concessionária) slip.
Paste or type the value to check.
Select the document/format type if the tool has modes.
Read the valid / invalid result — checksum success is not the same as official registry status.
Brazil’s boletos encode payment data in a long digitable line with field check digits. This tool validates those structural rules locally so you can catch typos before paying. It does not contact banks, confirm amounts due, or prove a slip is legitimate — treat it as a format and check-digit helper for Brazilian payment slips.
Enter a value in Boleto / Digitable Line Validator to test format and check digits. A “valid” result means the value passes algorithmic checks — not that it exists in an official database.
Strip spaces if the tool expects digits only. Never use test generators to impersonate real people or companies.
Whenever possible, Boleto / Digitable Line Validator processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
No. It only validates the typed line / barcode digits in your browser.
From the leading digits and length conventions used for bank slips versus arrecadação (utility/taxes) barcodes.
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Yes. Boleto / Digitable Line Validator is free, with no sign-up and no artificial usage caps for normal personal and work use.
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.