Image to Base64 Converter Free Online

Our free image to Base64 converter encodes any image — JPG, PNG, WEBP, GIF or SVG — into a Base64 string instantly in your browser. Base64 encoding is widely used in web development to embed images directly into HTML, CSS and JSON without needing separate image files.

When to Use Base64 Images

Email templates: Embed logos directly in HTML emails to avoid blocked external images.
CSS backgrounds: Embed small icons as background-image data URLs.
Single-file HTML: Create fully self-contained HTML files with all images embedded.
API payloads: Send images as Base64 strings in JSON API requests.

Output Formats Available

Raw Base64: Just the encoded string without any prefix.
Data URL: Complete data:image/jpeg;base64,... ready to use as img src.
CSS background: Ready-to-paste background-image property.
HTML img tag: Complete img tag with Base64 source.

Frequently Asked Questions

Is my image safe?

Yes. Encoded entirely in your browser. Never leaves your device or gets uploaded anywhere.

Does Base64 compress the image?

No — Base64 actually increases size by ~33%. It is used for compatibility and embedding, not compression. To compress, use our Image Compressor tool.

What formats are supported?

JPG, PNG, WEBP, GIF, BMP, SVG and most other image formats are supported.