Validate YAML
Check whether YAML is valid and see the line of any syntax error.
FreeNo uploadNo sign-up
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How to use the Validate YAML
- Type or paste your input into the Input box, or upload a text file.
- Adjust the options under the tool. The result updates as you type.
- Copy the output or download it as a file.
Private by design
The Validate YAML runs entirely in your web browser. Nothing you enter or open here is uploaded to a server, so it is safe to use with private data and works even when your connection drops after the page has loaded.
Frequently asked questions
Is the Validate YAML free?
Yes. The Validate YAML on Codegres.org is completely free, with no sign-up, no limits and no watermark.
Is my data uploaded anywhere?
No. The Validate YAML runs entirely in your browser using JavaScript, so your data never leaves your device and is not stored or seen by anyone.
Does the Validate YAML work on my phone?
Yes. It works in any modern browser on Android, iPhone, Windows, Mac and Linux, with nothing to install.