YAML to JSON

YAML in. JSON out.

And back again.

YAML
JSON
0 chars → 0 chars
No upload
Works offline
No tracking

Need batch YAML conversion? The offline bundle converts without limits. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Paste
Paste YAML or JSON. Toggle direction with one click.
02
Convert
fwip converts instantly using js-yaml. All processing in your browser.
03
Copy
Copy or download the result. Nothing was uploaded.
// Why this is different

Convert config files without sharing them.

Most YAML converters send your configuration to a server. That means your infrastructure config, secrets structure, and environment details pass through systems you don't control.

fwip works differently. The conversion engine runs entirely in your browser. Your data is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

Is the conversion lossless?▾
For standard YAML features, yes. Basic types (strings, numbers, booleans, arrays, objects) convert perfectly. YAML-specific features like anchors and aliases are resolved during conversion.
Does this handle anchors and aliases?▾
Yes. js-yaml resolves YAML anchors (&) and aliases (*) during parsing, producing the expanded JSON equivalent.
What about multi-document YAML?▾
The converter processes the first document in multi-document YAML files. For multiple documents separated by ---, convert each one separately.
Can I convert JSON back to YAML?▾
Yes. Toggle the direction to JSON → YAML. The converter produces clean, properly indented YAML output.
What YAML version is supported?▾
YAML 1.2 via the js-yaml library, which is the same parser used by most JavaScript tools and CI/CD systems.
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