Image to Base64 Converter
Convert an image into Base64 text or a data URL ready for HTML, CSS or JSON.
What is a Base64 image?
Base64 represents a binary file using only text characters. When you convert an image to Base64, the resulting data URL can be embedded directly in an HTML img tag, a CSS background-image or a JSON payload, so you don't need to host a separate image file.
When to use it
- Small icons and logos in email templates
- Single-file HTML reports and prototypes
- Tiny background patterns embedded in CSS
- APIs that expect image data as text
Things to keep in mind
Base64 increases size by about 33% and browsers can't cache embedded images separately, so use it for small images. Conversion happens entirely in your browser.
How to use Image to Base64 Converter
- Choose the image to convert.
- Pick the output: raw Base64, data URL, HTML img tag or CSS.
- Copy the result with one click.
- Paste it into your HTML, CSS or JSON.
Why use this tool?
Fast and reliable for developers: nothing is uploaded, output is instant and you get ready-to-use snippets.
FAQ
Do Base64 images affect page speed?
For small images they can help by saving requests; for large images they bloat the HTML and prevent caching.
Should I Base64-encode SVG?
SVG is already text, so URL-encoding it is usually smaller, but Base64 works fine too.
Can I turn Base64 back into an image?
Yes, use our Base64 to Image tool.
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