AnkhKit

Base64 File Encoder & Decoder Online

Runs 100% in your browser — your files never leave your device.

Embedding an image in CSS, pasting a file into a support ticket, or decoding a base64 blob someone sent you — this tool goes both ways. Drop a file to get its base64, or paste base64 (data URIs included) and download the reconstructed file. Everything happens locally, so even private files stay on your device.

How it works

  1. 1

    Drop a file or paste base64

    Either direction works: file in, base64 out — or the reverse.

  2. 2

    Copy or name the output

    Copy the encoded string, or give the decoded file a name.

  3. 3

    Download

    Decoded files download instantly, mime type detected from data URIs.

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Base64 String Encoder & Decoder Online Encode any text to base64 or decode base64 back to text, with URL-safe variants and data-URI support — free, instant, in your browser.

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