Generate a barcode

Pick a format, type the data, download SVG or PNG. The preview updates as you type.

Format

Any text: a web address, a sentence, numbers. For Wi-Fi, contacts or email use the QR builder, which writes the right format for you.

FormatAny text (up to about 2,900 bytes)

Examples (tap to use)

DataError correction

Module size

Bars

Background

Show text under linear barcodes

Finder patternsThe three big squares let a scanner find the code, measure its size and work out which way up it is.
SeparatorsA one-module white border around each finder so it stands apart from the data.
Timing patternsAlternating dark and light modules between the finders give the scanner the module grid.
Alignment patternsSmaller squares (version 2 and up) that correct for curved or tilted surfaces.
Format informationError-correction level and mask pattern, written twice for safety, protected by its own BCH code.
Version informationFrom version 7 up, the version number is written twice near the corners.
Dark moduleA single module that is always dark, beside the bottom-left finder.
Data and error correctionEverything else: your message plus Reed–Solomon codewords that let a damaged code still read.

Tools