Question 1

What is Base64 encoding?

Accepted Answer

Base64 is an encoding method that converts binary data into 64 printable ASCII characters. It is commonly used to transmit binary data over text-based protocols, such as email attachments and inline images in HTML/CSS.

Question 2

Does Base64 encoding increase data size?

Accepted Answer

Yes. Base64-encoded data is approximately 33% larger than the original. This is because every 3 bytes of input are encoded as 4 bytes of Base64 characters.

Question 3

Can Base64 encode Unicode text?

Accepted Answer

Yes. This tool first converts text to UTF-8 encoding using encodeURIComponent, then applies Base64 encoding. This ensures that all Unicode characters, including Chinese, are correctly handled.

Base64 Encode/Decode

Text Base64 Encode/Decode

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Image to Base64 Converter

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