Image to Base64
Convert an image into a Base64 data URL for inline embedding.
Drop an image to encode
The file is read locally and never uploaded
About Image to Base64
A data URL embeds a file directly in your markup or stylesheet, removing a round trip to the server. For small, always-needed images that can measurably improve first render.
This tool reads your file locally and produces the complete data URL along with copy-ready HTML, CSS and Markdown snippets.
Frequently asked questions
When should I inline an image?
For very small assets - icons, spacers, tiny logos - inlining saves a network request. Above a few kilobytes it usually hurts more than it helps.
Why is the output larger than the file?
Base64 encoding adds about a third to the byte count because it represents three bytes with four characters.
Can I use this in CSS?
Yes. The tool gives you ready-made snippets for an img tag, a CSS background and a bare data URL.