Meento Base64 File Converter

100% client-side — nothing is uploaded to any server. Runs entirely in your browser.

Choose or drag & drop any file to encode it to Base64 (downloaded as a .txt file).
Choose a .txt / .b64 / .base64 file (or a filename containing "b64"/"base64") to decode it back to the original binary file.

Auto-detect looks at the extension/name (.txt, .b64, .base64, or "b64"/"base64" in the name) to decide whether to decode.
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