qrtool

qrtool is a command-line utility for encoding or decoding QR code.

Installation

From source

cargo install qrtool

From binaries

The release page contains pre-built binaries for Linux, macOS and Windows.

How to build

Please see BUILD.adoc.

Usage

Basic usage

Encode a string in a QR code:

qrtool encode "QR code" > output.png

Generate this image:

Decode a QR code from this image:

qrtool decode output.png

Output:

QR code

SVG generation

qrtool encode -o output.svg -t svg "QR code"

Generate this image:

Micro QR code generation

qrtool encode -v 3 --variant micro "QR code" > output.png

Generate this image:

Colored output

qrtool encode --foreground "#bc002d" "QR code" > output.png

Generate this image:

Generate shell completion

--generate-completion option generates shell completions to stdout.

The following shells are supported:

• bash
• elvish
• fish
• powershell
• zsh

Example:

qrtool --generate-completion bash > qrtool.bash

Command-line options

Please see the following:

• qrtool(1)
• qrtool-encode(1)
• qrtool-decode(1)

Changelog

Please see CHANGELOG.adoc.

Contributing

Please see CONTRIBUTING.adoc.

License

Copyright (C) 2022 Shun Sakai (see AUTHORS.adoc)

This program is distributed under the terms of either the Apache License 2.0 or the MIT License.

See COPYRIGHT, LICENSE-APACHE and LICENSE-MIT for more details.