Base64 Encoder & Decoder

Base64 encoder and decoder for text and files: convert any input into a Base64 string or restore the original data. Full UTF-8 support and URL-safe encoding options, free and instant in your browser.

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Last updated: 2026 · Free online tool

What is Base64 Encoder & Decoder?

Base64 encoder and decoder for text and files: convert any input into a Base64 string or restore the original data. Full UTF-8 support and URL-safe encoding options, free and instant in your browser.

How to Use

  1. 1
    Select Mode— Choose encoding or decoding mode.
  2. 2
    Enter Text— Paste text to convert or drag a file into the input area.
  3. 3
    View Result— The converted result is displayed automatically.
  4. 4
    Copy or Download— Copy the result to clipboard or download it as a file.

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Frequently Asked Questions

Base64 is an encoding method that converts binary data to ASCII strings. It is widely used in email attachments, data URIs, and more.

No, Base64 is encoding, not encryption. Anyone can decode it, so it is not suitable for protecting sensitive data.

Base64 encoding increases the size by approximately 33% compared to the original.

Yes, all files including images and PDFs can be converted to Base64 strings.

A variant of standard Base64 that replaces '+' and '/' with '-' and '_', making it safe for use in URLs.

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