Text-to-diagram API: Mermaid, PlantUML, Graphviz and 20+ more
Free to try, no sign-up required
Text-to-diagram API: Mermaid, PlantUML, Graphviz and 20+ more
Kroki is an open-source project that normally requires local setup and your own model API key. Here it runs pre-configured.
Free anonymous quota to try it. Register (free) for about 15× more. Or paste your own AllRouter key for unlimited use — it stays in your browser and is never sent to our server. Every run shows its exact cost, down to $0.0001.
Do I need to install anything?
No — it runs on our machine.
What does it cost?
There is a free quota to try; register for more, or bring your own key for unlimited use.
This page exists because Kroki is genuinely useful but takes real setup effort to run. We host it pre-configured so you can find out whether it fits your work before spending an afternoon on installation. If you like it, the source is right here — take it and self-host.