Convert a YAML document — a Docker Compose file, Kubernetes manifest, or CI config — into equivalent JSON. All parsing happens in your browser; your data never leaves your device.
Paste YAML and Tabreon converts it to JSON instantly — nested mappings, sequences, and scalars are all preserved, entirely in your browser.
Why use Tabreon for this?
Parsing runs entirely client-side — your YAML config, including secrets or internal hostnames, is never sent to a server.
Handles nested mappings, sequences, and standard YAML scalar types (strings, numbers, booleans, null).
Output is pretty-printed JSON, ready to paste into code or another tool.
How to convert YAML to JSON
1Paste your YAML. Paste a YAML document into the input panel.
2Click Convert to JSON. The equivalent pretty-printed JSON appears in the output panel.
3Copy or download. Copy the JSON output directly, or download it as a file.
What is YAML to JSON conversion?
YAML and JSON represent the same kinds of data — objects, arrays, strings, numbers, booleans — but with different syntax. Converting YAML to JSON is useful when a tool or API only accepts JSON, or when you want a stricter, more machine-readable representation of a config file for debugging.
How Tabreon handles your data
Parsing and conversion run entirely in your browser's JavaScript engine — the YAML you paste is never transmitted to a server.
Key features
Full support for nested mappings and sequences
Pretty-printed JSON output with 2-space indentation
Copy-to-clipboard and file download
Clear error message for invalid YAML syntax
Common use cases
Converting a Kubernetes manifest to JSON to feed into a JSON-only API
Inspecting a Docker Compose file's structure as JSON for debugging
Turning a CI pipeline's YAML config into JSON for a config-diffing tool
Common mistakes & limitations
YAML anchors and aliases are resolved to their expanded values; the JSON output does not preserve the anchor references themselves.
Multi-document YAML streams (separated by `---`) are not supported — only the first document is converted.
Frequently asked questions
No. Parsing and conversion happen locally in your browser using the js-yaml library — your data is never transmitted to a server.
The input must be valid YAML. Check for consistent indentation (YAML is whitespace-sensitive) and matching brackets in any inline flow-style sequences or mappings.
Comments (lines starting with #) are discarded — JSON has no comment syntax, so they are dropped during conversion, matching standard YAML-parser behavior.