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Base64 Encode / Decode
Converts text to Base64 and back, including full Unicode text.
Why it's useful: Base64 turns binary or text data into a plain-text format safe to embed in URLs, JSON, or email — commonly used for API tokens, small images, and data URIs.
About the Base64 Encode / Decode
The Base64 Encoder and Decoder converts text to Base64 and back, with full support for Unicode text such as accents, emoji and non-Latin scripts. Base64 appears in data URLs, email attachments, API payloads and basic authentication headers, so encoding and decoding it quickly is useful for developers and anyone debugging web requests.
How to use the Base64 Encode / Decode
- Paste the text or Base64 string.
- Click Encode to convert text to Base64, or Decode to convert Base64 back to text.
- Check the output.
- Copy it.
Frequently asked questions
What is Base64?
Base64 represents binary data using 64 printable characters (A–Z, a–z, 0–9, + and /), so it can travel safely through systems designed for text.
Is Base64 encryption?
No. Base64 is an encoding, not encryption — anyone can decode it. Never use it to hide passwords or secrets.
Why is Base64 bigger than the original?
Every 3 bytes become 4 characters, so encoded data is about 33% larger than the original.