JSON Formatter
Featured
Format, minify, and validate JSON with optional key sorting.
- On your device
- No signup
Private on your device
Your information stays on your device and is not uploaded.
Related tools
XML Formatter
Featured
Format, minify, and validate XML with readable indentation.
- On your device
- No signup
JSON Compare
Featured
Compare two JSON documents and list structural differences.
- On your device
- No signup
XML Compare
Featured
Compare two XML documents and list structural differences.
- On your device
- No signup
Base64 Encoder & Decoder
Featured
Encode and decode text with Base64.
- On your device
- No signup
JWT Decoder
Featured
Decode JWT header, payload, and expiry—including Bearer tokens—on your device.
- On your device
- No signup
UUID Generator
Featured
Generate UUIDs for apps, tests, and databases.
- On your device
- No signup
Short Link Generator
Featured
Create compact short links for long URLs.
- On your device
- Secure processing
- No signup
Paste YAML to validate it and format with indentation, or minify into a compact document. Errors report line and column when available.
How to use this tool
1. Paste YAML into the YAML Formatter input panel. 2. Choose indent size or minify options if shown. 3. Click Format or read live output. 4. Fix any syntax errors reported before copying. 5. Copy the formatted YAML for configs or CI files. Processing runs on your device.
Worked example
Example: paste a compact deployment YAML with inconsistent spacing and format it to 2-space indent for review in a pull request.
How it works
Paste YAML to validate it and format with indentation, or minify into a compact document. Errors report line and column when available.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Does it validate YAML?
Yes. Invalid YAML shows a parse error with line and column when available.
Is my YAML stored?
No. Everything stays on your device.
Is YAML Formatter and Validator free to use?
Yes. Utilnivo tools are free to use and do not require an account.
Related pages
- Formatters — compare developer tools and read FAQs
- Browse all free online tools on Utilnivo
- Explore more developer tools on Utilnivo
- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
- XML Formatter — Format, minify, and validate XML with readable indentation.
- JSON Compare — Compare two JSON documents and list structural differences.
- XML Compare — Compare two XML documents and list structural differences.
- Base64 Encoder & Decoder — Encode and decode text with Base64.
Page last reviewed: