Kroki CLI

A CLI for https://kroki.io.

Usage

kroki convert hello.dot

By default, the diagram type will be inferred from the diagram file extension and the default output format will be SVG.

Long format:

kroki convert hello.dot --type dot --format svg

The output format can also be inferred from the output file using the --out-file flag:

kroki convert simple.er --out-file out.png

Read from stdin:

cat hello.dot | kroki convert - -t dot

By default, when reading from stdin using -, the result will be output to stdout. If you want to output to a file you can use -o:

cat hello.dot | kroki convert - -t dot -o out.png

Similarly, you can also output to stdout when reading from a file using the special value - with the --out-file flag:

kroki convert simple.er --out-file -

Installation

The releases page provides binaries for each version to download.

You can also install the package directly from source. The compiled binary will be put into $GOPATH/bin/ or $HOME/go/bin/ if $GOPATH is not set:

go install github.com/yuzutech/kroki-cli/cmd/kroki@latest

Configuration

To configure the endpoint, you can use a configuration file. The CLI will look for the following locations:

• /etc/kroki.yml

• $HOME/kroki.yml

• kroki.yml

You can also specify an alternate config file using the --config flag:

kroki convert hello.dot --config config.yml

The config file should contain the endpoint URL and the HTTP timeout. By default, Kroki will use the demonstration server: https://demo.kroki.io and a timeout of 20 seconds.

Caution

Please note that the demonstration server usage is restricted to reasonable, non-commercial use-cases. We provide no guarantee regarding uptime or latency.

Example:

kroki.yml

endpoint: 'https://localhost:8000'
timeout: 30s

If you don’t want to use a file you can also use the following environment variables:

• KROKI_ENDPOINT

• KROKI_TIMEOUT

KROKI_ENDPOINT=https://localhost:8000 KROKI_TIMEOUT=1m kroki convert hello.dot