Base64 File Encoder

Certain APIs and data formats require binary files to be transmitted as Base64-encoded text. Whether you are attaching a PDF to a JSON API request, embedding a font in a stylesheet, or storing a small binary in a database text field, this encoder converts any file to its Base64 representation. Everything runs client-side, so sensitive documents never leave your device during the encoding process.

Base64 Encoder / Decoder

Convert text to Base64 and back — full Unicode, instantly.

plain-text

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base64

Your result lands here

Type on the left, pick a mode, and run. Drag-and-drop or paste — full Unicode supported.

awaiting input

How to use Base64 Encoder/Decoder

Pick Encode or Decode with the mode switch.
Type or paste your text in the input panel on the left.
Click the action button to convert — the result appears on the right.
Use the circular swap button between the panels to move the output back to the input and flip the mode for chained operations.
Click Copy to copy the result to your clipboard.

Base64 supports full Unicode text (UTF-8) encoding. Everything runs in your browser — no data is sent to a server.

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