YAML Tools

YAML Parser

YAML Parser — parse YAML to JSON so you can inspect the structure. It runs entirely in your browser, so nothing is uploaded and it works fully offline.

Client-sideRuns entirely in your browser — your data never leaves your device.

YAML Parser is a browser-based web developer tool on WebDevToolsBase. YAML Parser — parse YAML to JSON so you can inspect the structure. It runs entirely in your browser, so nothing is uploaded and it works fully offline. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.

YAML Parser is a free YAML Tools utility that runs entirely in your browser — nothing you enter is uploaded.

YAML input
JSON output
Converts one document using JSON-compatible values and string mapping keys. Numbers that would change during conversion, negative zero, nonfinite values, timestamps, binary data, sets, ordered maps, pairs, merge keys, cycles and unknown tags are rejected. Quote values only when text is intended; this changes their type. Ordinary aliases are expanded for JSON. Comments, quote style and numeric spelling are not retained. Limits: 2 MiB of text, 50,000 expanded values and 100 nesting levels.


 
How to use YAML Parser
 
  1. Paste one YAML document to produce a JSON preview.
  2. Review strings, numbers, arrays and object keys in the completed output.
  3. Resolve unsupported values or syntax errors. This browser preview is not a test of a Java, Go or PHP runtime.
  4. Copy the current completed JSON and check it against the receiving application’s requirements.
 
About this tool
 
This browser tool works with the supported JSON-compatible subset of YAML described above. A completed result means that this conversion succeeded; it does not validate an application schema, a deployment configuration or another programming language’s parser.
 
Keep the original source before formatting or conversion. Formatting normalizes presentation and removes comments. The operation runs locally in this browser and does not upload the entered document to a conversion service.
 
Frequently asked questions
 
 
How do I use YAML Parser?
Use YAML Parser to parse your input without installing anything; everything happens client-side.
 
Is YAML Parser free to use?
Yes — YAML Parser is completely free, with no usage limits.
 
Is my input private in YAML Parser?
Yes — your input never leaves your device; YAML Parser does all the work in your browser.
 
How does YAML Parser handle YAML indentation errors?
YAML Parser reports the problem inline so you can fix the indentation, all within your browser.
 
Does YAML Parser work offline?
Once the page has loaded, YAML Parser keeps working with no network connection.
 
 
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