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JSON Swiss Army Knife

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JSON Swiss Army Knife

Format, convert, decode

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Format & validate

JSON

JSON ↔ YAML

Input (JSON)

Output (YAML)

JSON ↔ CSV

Input (JSON array)

Output (CSV)

JWT decoder

Decoded locally. The signature isn’t verified.

Token

Header

Payload

Enter a token to decode

Base64

Text

Base64

Invalid Base64

URL encode

Text

Encoded

Unix timestamps

Current Unix time

1700000000

Epoch → date

Enter a valid timestamp

Date → epoch

-

UUID v4

Generated locally with a secure random source.

How many

UUIDs

© 2026 Rayan Alajmi

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