Toolbit

YAML Formatter and JSON Converter

Normalise the indentation of a Kubernetes manifest or a CI pipeline, catch a syntax error before the deploy does, and convert between YAML and JSON without leaving the tab.

What the YAML Formatter does

  • Reformat with consistent indentation and key ordering.
  • Convert YAML to JSON and JSON to YAML in one click.
  • Parse errors reported with line numbers.
  • Multi-document YAML support for Kubernetes manifests.

How to use it

  1. Paste your YAML — a manifest, a workflow, or a config file.
  2. Format it, or convert it to JSON.
  3. Copy the cleaned-up output back into your repository.

Why it runs locally

Toolbit has no backend. The YAML Formatter is implemented with standard browser APIs, so your input is processed in the tab and never uploaded, logged, or retained. That is what makes it safe to paste real data into — and it is also why the tool keeps working with the network disconnected, once you have installed Toolbit as an app.

Frequently asked questions

Does it handle multi-document YAML?
Yes. Documents separated by --- are parsed individually, which is what Kubernetes manifests usually need.
Can I convert JSON back to YAML?
Yes, the conversion works in both directions.
Are my manifests uploaded?
No. Every Toolbit tool runs entirely in your browser using standard Web APIs. Your input is never uploaded, logged, or sent to a third party — you can open the network tab and watch it stay quiet.

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