Your data is never sent to a server or stored anywhere. All processing happens in your browser.

JSON to YAML Converter

Conversion Mode
Indent
Output 
 
 
How to Use
 
 
  1. Select the conversion direction: JSON to YAML or YAML to JSON.
  2. Paste or type your data in the input area.
  3. The converted output updates in real time.
  4. Copy the output with the copy button.
 
JSON vs YAML
 
 
JSON (JavaScript Object Notation) uses braces and brackets with strict syntax. YAML (YAML Ain't Markup Language) uses indentation-based syntax that is more human-readable. Both are widely used for configuration files, APIs, and data exchange. YAML is popular for Kubernetes, Docker Compose, and CI/CD pipelines.
 
Conversion Notes
 
 
  • JSON is stricter: all keys must be quoted, no comments allowed.
  • YAML supports comments (#), multi-line strings, and anchors — these features cannot be represented in JSON.
  • This tool handles common YAML structures. Very complex YAML (anchors, tags) may need a dedicated parser.
 
Use Cases
 
 
  • Kubernetes: Convert JSON manifests to YAML for kubectl apply, Helm charts, or Kustomize overlays.
  • Docker Compose: Transform JSON service definitions into the YAML format required by docker-compose.yml.
  • Ansible: Convert JSON variable files or API responses to YAML for use in Ansible playbooks and roles.
  • CI/CD pipelines: Translate JSON configuration into YAML for GitHub Actions, GitLab CI, CircleCI, or Azure Pipelines.
  • Configuration management: Switch between JSON and YAML representations when different tools in your stack require different formats.
 
About YAML
 
 
YAML (YAML Ain't Markup Language) is a human-friendly data serialization format. It uses indentation instead of braces to denote structure, making it visually cleaner for configuration files. YAML supports features not available in JSON, including comments, multi-line strings, anchors and aliases for reuse, and typed values. It has become the standard format for infrastructure-as-code tools and container orchestration platforms.
 
Privacy
 
 
All conversion happens in your browser. No data is sent to any server.
 
FAQ
 
 
When should I use YAML over JSON, or the other way around?
 
YAML is easier for humans to read and edit and supports comments, so it suits config files (Kubernetes, Docker Compose, CI). JSON is stricter and more universal for APIs and data interchange. This tool converts freely in both directions so you can keep whichever each tool requires.
Can I convert configuration files containing secrets or credentials?
 
Yes. Conversion runs entirely in your browser with no upload, storage, or logging, so files containing API keys or connection strings stay on your device. Still avoid pasting production secrets while screen-sharing.
Do YAML comments survive conversion to JSON and back?
 
No. JSON has no concept of comments, so any # comments are dropped when converting YAML to JSON and cannot be restored on the way back. Multi-line strings and similar YAML-only features are likewise normalized.
Does it handle advanced YAML like anchors and tags?
 
It handles common YAML structures reliably, but very complex documents using anchors, aliases, or custom tags may not round-trip exactly. For those, a dedicated YAML processor is more appropriate.
Can I control the indentation of the YAML output?
 
Yes. Use the Indent setting to choose how many spaces each nesting level uses, so the output matches your project's style conventions.