YAML to JSON Converter.
Convert YAML to JSON in one click — multi-document streams, anchors and aliases, comments, and type inference, all handled. Private and instant, in your browser.
No signup · No uploads · No file-size cap
JSON output
// Paste input and press “Convert to JSON”.Convert YAML to JSON online — free and private
A YAML to JSON converter turns human-friendly YAML configuration into JSON that APIs, tools, and code consume directly. Paste your YAML above, press Convert to JSON, and the parser produces correctly typed JSON. Because it runs client-side, you can convert YAML to JSON online without uploading config files or secrets.
How to convert YAML to JSON in three steps
- Paste your YAML into the input, or click “Load sample”.
- Pick output formatting — pretty-printed or minified JSON.
- Convert and export — copy the JSON or download it as
data.json.
Handles the YAML you actually write
Real YAML has features simple parsers miss, so this one covers
multi-document streams separated by ---,
anchors and aliases (&name /
*name), comment stripping, flow
collections, and literal or folded block scalars. Type inference turns
unquoted numbers and booleans into real JSON types while keeping quoted
strings as text.
Why use this YAML to JSON tool?
It is fast, ad-free, and 100% private, with no file-size cap. Need the reverse? Use the JSON to YAML converter, or try XML to JSON and CSV to JSON. Learn more in our guide on how to convert YAML to JSON.
FAQ
YAML to JSON, answered.
How do I convert YAML to JSON online?+
Paste your YAML into the converter above and press Convert to JSON. The parser reads block maps, sequences, and scalars, infers types, and shows formatted JSON instantly. Copy it or download a .json file. Everything runs in your browser.
Does it support multi-document YAML?+
Yes. YAML streams separated by --- are parsed into an array of documents, so a file with several manifests converts cleanly. Single-document files convert to a single JSON value.
Are anchors, aliases, and comments handled?+
Yes. Comments (#) are stripped, and basic anchors (&name) and aliases (*name) are resolved so referenced values are inlined in the output. Quoted strings, flow collections ([] and {}), and literal/folded block scalars are supported too.
How are types inferred?+
Unquoted values that look like numbers, true/false, or null are converted to the matching JSON types, while quoted values stay strings. This produces clean, correctly typed JSON from typical config files.
Is it private?+
Completely. The conversion runs 100% client-side, so your YAML — including any secrets in a config file — is never uploaded or stored. There is no file-size cap.