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JSON to YAML error
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// about this tool

JSON to YAML Online

Updated 2026-08-19

Convert JSON to YAML online for free, instantly in your browser. Paste JSON and SnapTools produces clean, properly indented YAML — nested objects become blocks, arrays become lists — ready to copy or download. Nothing is uploaded; the conversion runs locally.

YAML is the format of choice for configuration: Kubernetes manifests, CI/CD pipelines, and app config are far easier to read and edit in YAML than in JSON. This converter lets you take any JSON data and express it in that friendlier form in one step.

// how to use

  1. 1 Paste your JSON into the input panel.
  2. 2 SnapTools converts it to clean, indented YAML as you type.
  3. 3 Copy or download the YAML for your config files or pipelines.

// examples

JSON to YAML
Input
{"service":"web","ports":[80,443],"env":{"DEBUG":false}}
Output
service: web
ports:
  - 80
  - 443
env:
  DEBUG: false

// common uses

Generating Kubernetes or CI YAML Making config files readable Porting JSON settings to a YAML tool Documenting data structures

// faq

Why convert JSON to YAML?
YAML is easier for humans to read and edit, which is why many config files and CI/CD pipelines use it. Converting lets you reuse JSON data in a YAML-based tool.
Is the conversion lossless?
Yes for data — the values are preserved exactly. YAML simply expresses the same structure in a more readable layout.
How are nested objects and arrays handled?
Nested objects become indented blocks and arrays become dash-prefixed lists, at any depth, following standard YAML.
Is my data uploaded?
No — conversion happens in your browser, so nothing leaves your machine.
Can I convert YAML back to JSON?
The reverse direction is on the roadmap; for now this tool converts JSON to YAML. Use the JSON Formatter to tidy the JSON side first.

↳ Curious to go deeper? Read the JSON vs YAML: which to use for config guide →

// works with your data

YAML to JSON YAML to TOML YAML Formatter Sort & Dedupe Lines Slug Generator Reverse Text

Use this via API

Get a free API key → 
curl -X POST https://thesnaptools.com/api/v1/tools/json-to-yaml \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"json":"{\"service\":\"web\",\"ports\":[80,443],\"env\":{\"DEBUG\":false}}"}'