About the Base64 Encode
Base64 represents binary or text data using a 64-character ASCII alphabet, which makes it safe to embed in URLs, JSON, HTML data attributes, email and data URIs. This encoder uses proper UTF-8 byte handling so that accented characters, emoji and non-Latin scripts encode correctly — something naive btoa() usage gets wrong.
Encoding is local and private. Use it to embed images as data URIs, prepare HTTP Basic Auth tokens, or store binary-ish data in a text-only field.
How to use the Base64 Encode
- 1Type or paste your text.
- 2Click “Encode to Base64”.
- 3Copy the Base64 string.
Key benefits
- Full UTF-8 and emoji support.
- Safe for URLs, JSON and email.
- Private and instant.
Real-world examples
Build a data URI
Encode content to embed inline in HTML or CSS.
Create a Basic Auth token
Encode user:password for an Authorization header.
Frequently asked questions
Does it handle Unicode correctly?+
Yes — text is UTF-8 encoded before Base64, so emoji and accents work correctly.
Is Base64 encryption?+
No. Base64 is reversible encoding, not encryption. Never use it to protect secrets.