Image to Base64 Converter
Convert images to Base64 data URIs or decode Base64 to images. Free, no signup, works in your browser.
Drop an image here
or click to browse · up to 10 MB
All conversion happens in your browser. No data is sent to any server.
About Image to Base64 Converter
This image to base64 converter encodes any uploaded image into a data URI string that you can embed directly in HTML, CSS, or JSON. It also works in reverse, decoding a Base64 string back into a viewable and downloadable image. Embedding small icons and graphics as data URIs reduces HTTP requests, which can speed up page loads for lightweight assets.
Frequently Asked Questions
How do I convert an image to Base64?
Upload your image using the tool above. It instantly generates a Base64 data URI string that you can embed directly in HTML or CSS. Click 'Copy' to copy the string.
How do I convert Base64 to an image?
Switch to 'Base64 → Image' mode, paste your Base64 string (with or without the data URI prefix), and the image renders instantly. Click 'Download' to save it.
Why convert images to Base64?
Base64 data URIs let you embed images directly in HTML, CSS, or JSON without separate HTTP requests. This is useful for small icons, email templates, and single-file applications.
What is the size impact?
Base64 encoding increases data size by approximately 33%. A 10 KB image becomes ~13.3 KB as Base64. Use it for small images (under 10 KB) to reduce HTTP requests.
Is my image uploaded to a server?
No. All conversion happens entirely in your browser using the FileReader API. Your images never leave your device.