What Base64 is used for
Base64 turns binary data into plain text using 64 safe characters. It is not encryption, it just makes data safe to move through systems that only handle text.
Everyday uses
- Embedding small images directly in HTML or CSS
- Sending binary data in JSON or email
- Storing tokens in URLs where special characters are not allowed
Base64 is not secure
Anyone can decode Base64 instantly. Never use it to hide passwords, keys or personal data. Use proper encryption for anything sensitive.
Frequently asked questions
Is Base64 encryption?
No. It is an encoding, not encryption, and can be reversed by anyone.
Does Base64 make data smaller?
No, it makes data about 33% larger because it uses four characters to represent three bytes.
Does it handle emoji and accents?
Yes, the tool encodes Unicode safely.