JSON → YAML / TOON Compressor

Remove repetitive quotes, commas, and structural brackets by converting JSON into YAML or TOON notation. Compare the resulting data footprint before sending structured content into AI workflows.

js-yaml.js

📥 JSON Input

Paste valid JSON or load a local .json file.

📂 Upload JSON

Characters: 0 Estimated tokens: 0 JSON depth: 0

Waiting for JSON

⚡ Compress & Convert

Generate both formats and compare their estimated token footprint.

📤 Compressed Output

Switch between YAML and TOON output.

No output generated —

📊 Token Comparison

Original JSON

estimated tokens

YAML

—

TOON

—

📉 Footprint

JSON 0

YAML 0

TOON 0

🔒 Client-side processing

Your JSON is parsed and converted in the browser. The page does not intentionally upload the JSON content to Claupt servers.

Compare structured-data formats

Paste valid JSON and convert it to YAML and TOON. Compare the estimated lengths and copy or download the format your receiving system accepts.

Example: repeated records such as [{"name":"Ada","score":9},{"name":"Lin","score":8}] can benefit from a format that lists shared field names once. Small objects may become larger.

Estimates use character counts, not a provider tokenizer. Conversion is not guaranteed to save tokens. Keep the source JSON and verify that numbers, nulls, strings and nested arrays retain their intended meaning. Integers beyond JavaScript’s safe range should be represented as strings.