Free Base64 Encoder & Decoder Online
Base64 is a way of writing binary data (like an image or a token) using only plain letters, numbers and a couple of symbols — so it can travel safely through systems that only handle text, like email or a JSON field. It isn't encryption; anyone can decode it. It's about safe transport, not secrecy. Paste text or Base64 here and convert either direction instantly.
Frequently Asked Questions
- Is Base64 a form of encryption?
- No — Base64 is an encoding scheme, not encryption. It makes binary data safe to transmit as text but does not protect it from being read.
- Can I encode a file to Base64?
- Yes. Click the file picker, choose any file, and the tool outputs its Base64 representation instantly.
- Is there a size limit for Base64 encoding?
- There is no enforced limit — processing happens in your browser, so the practical limit is your available memory.