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Base64 Encoder / Decoder

Encode or decode text to and from Base64 format instantly.

Base64 encoder

Convert plain text to and from Base64 safely in the browser.

About Base64 Encoder / Decoder

Encode or decode text to and from Base64 format instantly. Text and data chores like formatting, validating and converting are small tasks that interrupt real work.

Everything runs locally in your browser using standard web APIs — nothing is uploaded, queued, or stored on a server. Your files never leave your device, so there is no privacy trade-off, no file-size limit imposed by an upload, and no waiting for a round trip. It also means the tool keeps working on a slow or intermittent connection, and there is nothing to delete afterwards.

How to use Base64 Encoder / Decoder

  1. 1Paste your text. Drop your content into the input panel above.
  2. 2Review the output. Base64 Encoder / Decoder processes it as you type — no submit button.
  3. 3Copy the result. Copy the output to your clipboard or download it as a file.

Frequently asked questions