Paste text/Base64 or choose a file.
Decode accepts whitespace, Data URIs, standard Base64, and URL-safe `-` / `_` variants. Invalid padding and characters are rejected.
Encode UTF-8 text or local files, decode standard and URL-safe Base64, inspect bytes, and download the result without uploading data.
Decode accepts whitespace, Data URIs, standard Base64, and URL-safe `-` / `_` variants. Invalid padding and characters are rejected.