Base64 Encoder & Decoder
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Last updated: 2026 · Free online tool
What is Base64 Encoder & Decoder?
Free online tool to encode text or files to Base64 and decode Base64 strings
How to Use
- 1 Select Mode — Choose encoding or decoding mode.
- 2 Enter Text — Paste text to convert or drag a file into the input area.
- 3 View Result — The converted result is displayed automatically.
- 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.