Full Unicode support
Correctly handles accents, international scripts and emoji.
Base64 Encoder & Decoder
Encode and decode Unicode text with standard or URL-safe Base64.
Your data stays in your browser and is never uploaded to a server.
Standard Base64 uses + and / and normally includes = padding.
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How to encode or decode Base64
- 1
Choose Encode or Decode and select the Base64 variant.
- 2
Enter text or a Base64 value in the input field.
- 3
Process the value, then copy or swap the result.
Key features
Standard and URL-safe
Switch between the regular alphabet and URL-friendly Base64.
Strict validation
Invalid alphabets, lengths and UTF-8 bytes produce a clear error.
Frequently asked questions
Is Base64 encryption?
No. Base64 is a reversible text encoding and provides no secrecy.
What is URL-safe Base64?
It replaces + and / with - and _ so the result is safer in URLs and filenames.
Does this support Unicode?
Yes. Text is converted through UTF-8 before encoding and after decoding.