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YAML to JSON Online Free — PrivaTools

TL;DR: Paste YAML and copy the equivalent JSON instantly — runs entirely in your browser, your config never uploads.

Convert YAML to JSON online for free — paste any YAML and instantly see the equivalent JSON, validated and pretty-printed. Runs 100% in your browser, never uploads.

YAML to JSON runs on the same privacy-first stack as every PrivaTools utility: files enter an isolated Docker container, are processed in temporary memory, and are unlinked the moment your download begins. No account, no watermark, no daily quota.

How to Use YAML to JSON

  1. Paste YAML — Drop any YAML document into the left textarea — a Kubernetes manifest, GitHub Actions workflow, Docker Compose file, or any configuration.
  2. Read JSON instantly — Equivalent JSON appears on the right, pretty-printed and validated. Click Copy to grab it. 100% in your browser — your config never touches our servers.

Frequently Asked Questions

Is it 100% in my browser?

Yes. The YAML never leaves your device — no server roundtrip, no logs, no analytics on the content.

Which YAML features are supported?

All common config features: scalars, lists, nested maps, quoted strings, comments, multi-line strings, and flow-style arrays and objects. Anchors, tags, and multi-doc streams are not supported — those are rare in practice.

What if my YAML has a parse error?

The error message appears in the output area with line context. Fix the YAML and the conversion updates instantly.

Last reviewed 2026-05-01 by the PrivaTools maintainers. Source code on (MIT-licensed, self-hostable).

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