tools

client-side utilities. no data leaves your browser.

base converter

Input

Hex

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Base58

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Base64

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hash generator

Input

SHA-256

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Keccak-256

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bech32 encoder/decoder

Input

Output

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uuid generator

Output

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regex tester

Pattern

Flags

Test String

Matches (0)

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Match Preview

byte counter

Input

characters

no spaces

words

lines

utf-8 bytes

unix timestamp converter

Unix Time ↔ ISO8601 Converter

Convert between Unix timestamps and ISO 8601 strings. Millisecond/second toggle.

Unix Timestamp (s)

ISO 8601

Timezone: UTC

text diff

Text Diff Tool

Compare two text blocks and show line-by-line differences.

Text A

Text B

Diff Output

jwt inspector

JWT Header/Payload Inspector

Decode JWT header and payload from base64url. No signature verification.

JWT Token

Header

Payload

csv to json converter

CSV → JSON Converter

Convert CSV data to JSON format. Handles quoted fields and commas.

CSV Input

JSON Output