Image to Base64 Converter

What is Base64 Image Encoding?

Base64 encoding converts binary image data into an ASCII string format. This allows you to embed images directly in HTML, CSS, or JSON without separate file requests. The resulting string is about 33% larger than the original binary, but eliminates the need for additional HTTP requests.

Common Use Cases

Inline images in HTML: Use <img src="data:image/png;base64,..."> to embed small icons or logos directly in your HTML.

CSS backgrounds: Use background-image: url(data:image/png;base64,...) for CSS sprites or small decorative images.

Email templates: Embed images in HTML emails to avoid blocked external resources.

API payloads: Send image data as part of JSON API requests without multipart form encoding.

API Access

Encode images via API: POST /api/base64/encode (file upload)

Get a free API key for 100 requests/day.