FreeTools
Files processed locally in your browser

Base64 Encode & Decode

Encode or decode Base64 text and files privately in your browser.

Or drop a file to encode as Base64

Processed locally — large files may be slow

How to use this tool

  1. Choose encode or decode.
  2. Paste text or drop a file.
  3. Copy the result.

When to use Base64

Base64 is common in data URLs, email attachments, and APIs.

Why use FreeTools?

Unlike many online utilities, FreeTools processes your files in the browser using modern Web APIs and WASM libraries. That means faster results on your machine, no waiting for uploads, and a clear privacy story: we never see your documents or photos. No account is required — open the page, drop a file, download the result.

FAQ

Is file encoding private?+

Yes. Files are read locally and never uploaded.

Why did decode fail?+

Input must be valid Base64.

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