Convert config and data between YAML and JSON with a real parser — on your own device, nothing uploaded.
A .yaml or .json file — or paste below · converted on your device, nothing uploaded
No size limit · files are processed on your device and never uploaded · how it works
YAML in
JSON out
Converts between YAML and JSON with a full YAML 1.1 parser — anchors, multi-line strings and nested maps all handled. Runs in your browser.
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
How to use the YAML to JSON
Paste YAML or drop a .yaml file.
Choose pretty or minified JSON.
Copy the JSON or download it.
Easy to use
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
Best quality
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Private & secure
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
YAML into JSON, properly parsed
YAML is friendly to write but most APIs and tools want JSON. This converts one into the other with a complete YAML
parser — anchors and aliases, block and folded multi-line strings, and deeply nested maps all come through
correctly, rather than the naive line-splitting a quick script would do.
It runs both ways — JSON to YAML — and everything happens in your browser, so config
that often holds secrets never leaves your device. To tidy the JSON afterwards, reach for the
JSON Formatter.
Frequently asked questions
Does it handle anchors and multi-line strings?
Yes — it uses a complete YAML parser, so anchors, aliases, block and folded scalars, and nested maps all convert correctly.
Can it go the other way?
Yes — flip to JSON → YAML to turn an API response or JSON config into clean, indented YAML.
Is my file uploaded?
No — parsing and conversion happen entirely in your browser.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
No limits. No file-size cap, no queue, no watermark, no account.
Runs on your CPU. Batches use several cores in parallel; nothing is throttled.