Base64 Encoder & Decoder

Encode UTF-8 text or decode Base64 locally, with URL-safe alphabet and byte-size details.

BYTE ENCODING STUDIO

Turn bytes into a portable string.

Encode text or a local file, then choose the Base64 variant your destination expects.

Choose your bytes

ON DEVICE

URL-safe alphabetReplace +/ with -_ and omit paddingWrap at 76 charactersMIME-friendly line lengths

13 bytes

Encoded payload

LOCAL RESULT

0 output bytes

Need a feature from the original version? Open the current ECECH tool

How this app works

Encode UTF-8 text or files up to 32 MB, optionally produce a MIME-tagged data URI, or decode Base64 into readable text or a downloadable binary file. Processing stays on this device.