Base64 Encoder/Decoder Online — UTF-8 Support
Encode or decode Base64 strings with full UTF-8 support
Real-time conversion with full UTF-8 support. All processing happens in your browser.
Frequently Asked Questions
What is Base64 encoding?
Base64 converts binary data into ASCII text using 64 characters (A-Z, a-z, 0-9, +, /). It's used to embed images in CSS, encode email attachments, and transmit binary data over text-based protocols.
Is Base64 encryption?
No. Base64 is encoding, not encryption. Anyone can decode Base64 — it provides no security. Never use Base64 to protect sensitive data.
Why does Base64 output end with = signs?
The = padding characters ensure the output length is a multiple of 4. One = means the input had 2 remaining bytes, == means 1 remaining byte.
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