Image to Base64 Converter: An image to Base64 converter encodes an image file into a Base64 text string or data URI you can embed directly in HTML, CSS or JSON. Upload an image and copy the ready-to-paste
data:image/...;base64, string — all done in your browser.Frequently Asked Questions
What is Base64 image encoding?
Base64 encoding represents binary image data as ASCII text. The resulting data URI can be embedded inline in HTML or CSS so the image loads without a separate network request.
When should I embed an image as Base64?
Base64 embedding is best for very small images like icons, logos or email graphics. It avoids extra HTTP requests but increases the file's text size by about 33%, so it's not ideal for large photos.
How do I use a Base64 string in CSS?
Paste it into a background property as background-image: url('data:image/png;base64,....'). In HTML use it as the src of an ![]()
tag.
Is my image uploaded during conversion?
No. The image is read and encoded locally in your browser with the FileReader API, so it never leaves your device.