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Code Transformer & LLM Sanitizer

transform.ignlab.net

100% Local Processing • Zero Data Transmitted • Safe for Proprietary Code
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AI Safeguard {{ redactions.length }} redacted
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No history yet — copy or download a result to save it here.
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Drop file to load…
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{{ inputError }} {{ stats.in.lines }} lines · {{ stats.in.chars }} chars · {{ stats.in.bytes }}
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{{ output }}{{ outputError ? '' : 'Transformed output appears here…' }}
⚠ {{ outputError || copyError }} {{ stats.out.lines }} lines · {{ stats.out.chars }} chars · {{ stats.out.bytes }}
🛡 Sanitizer redacted {{ redactions.length }} sensitive item{{ redactions.length===1?'':'s' }} before transforming
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JWT Decoder

Paste a JSON Web Token and see its decoded header and payload immediately, plus a computed expiry date and whether it has already expired. The signature is not verified — this only decodes the Base64URL-encoded header and payload, it never contacts a server or validates against a secret.

How to use it

  1. Paste your source into the panel — or click Sample to see it work instantly.
  2. The JWT mode is pre-selected for you.
  3. Copy or download the result — nothing is ever uploaded, it's all done locally in your browser.

Frequently asked questions

Does this verify the JWT signature?

No, only the header and payload are decoded and shown; signature verification requires the signing key, which this tool never asks for or needs.

Is the token sent anywhere?

No — decoding happens entirely in your browser using standard Base64URL decoding, nothing is transmitted.

What does the expiry info mean?

If the payload has an exp claim, its human-readable date and whether it has already passed are shown in a _meta field alongside the decoded payload.

Need a different conversion? Browse all conversions, sanitize secrets with AI Safeguard, or read the guides.