Crate qrcode2 

The qrcode2 crate is a QR code encoding library.

This crate provides a normal QR code, Micro QR code, and rMQR code encoder for binary data.

Examples

use qrcode2::{QrCode, image::Luma};

// Encode some data into bits.
let code = QrCode::new(b"01234567").unwrap();

// Render the bits into an image.
let image = code.render::<Luma<u8>>().build();

// Save the image.
let temp_dir = tempfile::tempdir().unwrap();
image.save(temp_dir.path().join("qrcode.png")).unwrap();

// You can also render it into a string.
let string = code.render().light_color(' ').dark_color('#').build();
println!("{string}");

Re-exports

pub use crate::types::Color;

pub use crate::types::EcLevel;

pub use crate::types::QrError;

pub use crate::types::QrResult;

pub use crate::types::Version;

pub use image;image

Modules

bits

The bits module encodes binary data into raw bits used in a QR code.

canvas

The canvas module puts raw bits into the QR code canvas.

ec

The ec module applies the Reed-Solomon error correction codes.

optimize

Find the optimal data mode sequence to encode a piece of data.

render

Render a QR code into image.

types

The types module contains types associated with the functional elements of a QR code.

Structs

QrCode

The encoded QR code symbol.