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JSONXX

YAML to JSON Converter Config Files to Clean JSON — Paste your YAML and instantly get valid JSON.

Open in JSON Editor
YAML to JSON Convert YAML config files to valid JSON instantly. Supports anchors, aliases, and multi-document YAML. This is a read-only converter — for editing, beautifying, or exporting, use JSON Editor. 100% browser-based — no upload. YAML Anchors Multi-doc Free
Drag & drop a .yaml or .yml file here
or paste YAML / click Upload File above
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Ready to convert

Your JSON output will appear here

1Paste JSON or drag a file
2Expand/collapse nodes to explore
3Need editing? Open in JSON Editor

YAML to JSON — Best Practices

Validate YAML First

Ensure your YAML is valid before conversion. Common issues include incorrect indentation and mixing tabs with spaces.

Watch Indentation

YAML is indentation-sensitive. Use spaces consistently (2 spaces per level is standard). Tabs are not allowed in YAML.

Understand Anchors

YAML anchors (&) and aliases (*) create references in your data. Our converter expands them automatically into the full JSON values.

From Config to API

Once you understand the structure, switch to our JSON Editor to make changes, format, or export to CSV, Excel, or Markdown.

YAML to JSON — Exclusive Features

YAML Anchor Support

Properly resolves YAML anchors and aliases into expanded JSON structures. No data loss from complex YAML reference features.

Multi-Document Support

Handles YAML files with multiple documents separated by ---. Each document is converted independently.

Type Preservation

Numbers, booleans, nulls, and strings are correctly typed in the output JSON. No manual type correction needed after conversion.

YAML to JSON — FAQ & Troubleshooting

How do I convert YAML to JSON?

Paste your YAML content or upload a .yaml / .yml file. The converter instantly parses the YAML structure and displays the equivalent JSON output. All processing happens in your browser — no signup required.

Does it support YAML anchors and aliases?

Yes. YAML anchors (&) and aliases (*) are properly resolved and expanded into the JSON output. The converter handles complex reference structures commonly used in Docker Compose and CI/CD configurations.

Can I convert Docker Compose YAML to JSON?

Yes. Docker Compose files are standard YAML and convert to JSON without issues. This is useful for programmatic processing of container configurations or when integrating with JSON-based tools.

Does it handle multi-document YAML?

Yes. YAML files with multiple documents separated by --- are all parsed and converted. Each document is handled independently and the JSON output reflects the separate documents.

Can I convert YAML files with comments?

Yes. YAML comments are automatically ignored during the conversion process. They are only for human readability in the source YAML and do not appear in the JSON output.

What about Kubernetes manifests?

Yes. Kubernetes manifests (Deployment, Service, ConfigMap, etc.) are YAML files and convert cleanly to JSON. This is especially helpful for validating manifests or processing them with JSON-based API tools.

Is my data safe?

Yes. All processing happens 100% in your browser. Your YAML data is never uploaded to or stored on any server. No backend, no tracking, no data leaves your device.