Base64 / URL / Hex
100% client-side. Your data never leaves this page. Verify: DevTools → Network.
Mode: Encoding:
Input 0 bytes
Output
0 bytes
Encode or decode text as Base64, URL-safe Base64 or hex, with an auto-detect mode that guesses what you pasted. Byte counts show the size of input and output. All conversion runs locally in your browser. Nothing is uploaded.