Base64 Encode & Decode

Encode and decode Base64 and URL strings both ways.

Encode and decode Base64 in real time, decode any JWT, and turn images into data-URIs — a complete developer codec toolkit that works entirely offline.

WHAT YOU CAN DO • Base64 encode and decode text or data both ways, with a live byte count • A full codec set — Base64URL, URL-encoding, HTML entities, Hex and Base32 • JWT decoder that pretty-prints the header and payload, with claims and expiry made readable • Image to Base64 data-URI, and paste a data-URI back to preview the image • Saved history of every conversion, always private and offline • A built-in reference that explains Base64, data-URIs and JWTs

HOW IT WORKS

1. Paste your text, token, or image
2. Pick the codec — conversion happens instantly
3. Copy the result with a single tap

Everything runs on your device. No accounts, no servers, no tracking — your payloads never leave your iPhone.

Full access unlocks every codec, the JWT decoder, the image converter and saved history. Choose a weekly or yearly plan, or a one-time lifetime unlock.

Get the developer codec toolkit that respects your privacy.

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