Image to Base64 Encoder

Encode images to Base64 / data URLs

Drop an image or click to encode

JPG, PNG, WebP, SVG, GIF supported

How to Use Image to Base64 Encoder

1
Upload your image by clicking the upload area.
2
The tool converts it to a Base64 string instantly.
3
Copy the Base64 string or the full data URI (with the data:image prefix).
4
Use it in HTML, CSS, or an API payload.

About Image to Base64 Encoder

Convert images to Base64 encoding online. Get data URL, CSS background, HTML img tag, or raw Base64 string. Free browser tool.

Best Use Cases

•Embedding small images directly in HTML without separate file requests
•Creating Base64 data URIs for CSS background images
•Encoding images for inclusion in JSON payloads or API requests
•Generating inline image strings for HTML email templates
•Converting images to Base64 for storage in text-based databases

Examples

Inline HTML

Upload a small icon. Copy the data URI and paste it directly into an img tag's src attribute.

CSS background

Upload a pattern image. Copy the CSS format output to use as a background-image in your stylesheet.

API payload

Upload an image. Copy the raw Base64 string for including in a JSON API request body.

Common Mistakes to Avoid

!Encoding large images to Base64, which bloats HTML file size by 33%
!Using Base64 for images that should be served as separate cached files
!Forgetting the data:image/png;base64, prefix when embedding in HTML

Limitations

–Base64 encoding increases file size by approximately 33%
–Not recommended for images larger than a few kilobytes
–Output format depends on the input image type and cannot be changed

Frequently Asked Questions

When should I use Base64 images?

Base64 is useful for small icons in CSS or HTML to eliminate an extra HTTP request. Avoid it for large images - it increases file size by ~33%.