Image to Base64
Free online Image to Base64 converter. Convert images to Base64 data URIs instantly. Supports PNG, JPEG, WebP, GIF, SVG. All processing is local.
Drag & drop an image or click to browse
PNG, JPEG, WebP, GIF, SVG, BMP
Upload an image to see the Base64 output.
How to Use Image to Base64
Upload an Image
Click the upload area or drag and drop an image file. Supported formats: PNG, JPEG, GIF, WebP, SVG, and BMP.
Get Base64 Data URI
The image is converted to a Base64 data URI that you can use directly in HTML, CSS, or JSON.
Copy and Use
Copy the Base64 string or the full data URI. Use it in <code>src</code> attributes, CSS <code>url()</code>, or any context that accepts data URIs.
Frequently Asked Questions
What is a Base64 image?
A Base64 image is a text representation of an image file, encoded as a data URI. It can be embedded directly in HTML or CSS without needing a separate file. This reduces HTTP requests but increases the overall file size by about 33%.
When should I use Base64 images?
Base64 is best for small images (icons, logos) that are used repeatedly. It eliminates HTTP requests at the cost of larger file sizes. For large images, it's usually better to load them as separate files.
Is there a size limit?
This tool runs in your browser, so there's no server-side limit. However, very large images may cause performance issues. For images over 1MB, consider using a dedicated image optimization tool first.
Using Data URIs
A data URI looks like: data:image/png;base64,iVBORw0KGgo.... It includes the MIME type, encoding type, and the Base64-encoded data. You can use it anywhere an image URL is accepted.
In HTML: <img src="data:image/png;base64,...">. In CSS: background-image: url(data:image/png;base64,...);. Data URIs are great for small images that are part of your design system, like icons and logos.