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Encode & Decode
Runs locally · private
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Encode & Decode

Base64, URL, JSON, JWT, hashing, and other data formats.

ClientRuns entirely in your browser

Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to text.

ClientRuns entirely in your browser

URL Encode / Decode

Percent-encode text for URLs or decode it back to plain text.

ClientRuns entirely in your browser

JSON Formatter

Format, validate, and minify JSON with clear error messages.

ClientRuns entirely in your browser

XML & YAML Formatter

Pretty-print XML and convert between YAML and JSON.

ClientRuns entirely in your browser

HTML Encode / Decode

Escape text to HTML entities or decode entities back to text.

ClientRuns entirely in your browser

JWT Decoder

Decode a JSON Web Token’s header and payload without a key.

ClientRuns entirely in your browser

CSV ↔ JSON

Convert CSV to a JSON array and JSON back to CSV.

ClientRuns entirely in your browser

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of text.

ClientRuns entirely in your browser

UUID Generator

Generate random RFC 4122 v4 UUIDs, one or many at a time.

© 2026 Jalu Wibowo Aji — Toolkit, privacy-first web utilities. Everything runs locally. Nothing is ever uploaded.