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Base64 Text Encoder/Decoder Tool - Support UTF-8 and Emoji Online Converter (Perfect UTF-8 compatibility, no server upload required, browser local processing)

Fast conversion between text and Base64 format, fully compatible with UTF-8 character set.

Image ConversionText Conversion

Text Input

Base64 Output

FAQ

Why use Base64 images?

Using Base64 images can reduce the number of HTTP requests. For small icons or background images, embedding them directly in CSS can significantly improve page load speed.

Does Base64 increase file size?

Yes. The size of Base64 encoded data is usually about 33% larger than the original file. Therefore, it is recommended to use this scheme only for images smaller than 10KB.