TOOL
CBOR Encode
CBOR Encode — pure client-side tool. Encodes JSON into real RFC 8949 CBOR binary, wire-compatible, with deterministic encoding (§4.2.1: shortest int/float forms, map keys sorted length-first then bytewise). Byte strings, tags, bignums and simple values via $bytes/$tag/$bignum/$simple conventions. Output hex (default) or base64. Privacy-first, no server round-trip.
Try an example:
Local only
Recent history
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How to use
- Type or paste your input into the input box.
- Adjust any parameters if needed.
- Copy or download the result.
Frequently asked questions
- Is my data uploaded anywhere?
- No. All processing happens locally in your browser with no server round-trip.
- Does this tool work offline?
- Yes. Once the page loads, the tool runs entirely client-side and needs no network connection.
Glossary terms
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