What is an HTML to Base64 encoder?
An HTML to Base64 encoder converts HTML markup into raw Base64 or a text/html data URL. Use it for fixtures, debugging encoded HTML, and small embedded examples.
How to use it
- Paste the HTML snippet.
- Choose raw Base64 or data URL output.
- Copy the encoded result.
Example
Input: <h1>Hello</h1>
Output: data:text/html;base64,PGgxPkhlbGxvPC9oMT4=
Common mistakes
- Base64 does not sanitize or secure HTML.
- Encoded scripts can still become dangerous if decoded and executed.
- Use raw Base64 when the receiving system already knows the content type.
Related tools
- Decode markup with Base64 to text.
- Format markup with the HTML formatter.
- Encode CSS with CSS to Base64.
Privacy and security
Encoding runs locally. Be careful with untrusted HTML after decoding it elsewhere.