Image to Base64 Converter — Encode Images to Base64 Free
ConverterConvert any image to a Base64 data URI string instantly. Supports JPG, PNG, WEBP, GIF and SVG. Copy the string for HTML, CSS or JSON. Free online image to Base64 encoder.
About the Image to Base64 Converter — Encode Images to Base64 Free
Our free image to Base64 converter encodes any image into a Base64 data URI string for embedding directly in HTML, CSS, JSON or JavaScript without a separate HTTP request. Upload your image and the Base64 string is generated instantly with a preview. Supports JPG, PNG, WEBP, GIF and SVG. All processing is in your browser — your image never leaves your device.
How to Use the Image to Base64 Converter — Encode Images to Base64 Free
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Upload your image or drag and drop it.
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The Base64 string is generated automatically.
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Preview your image to confirm correct encoding.
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Click Copy Base64 to copy the complete data URI.
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Paste into your HTML img src, CSS background-image or JSON field.
Frequently Asked Questions
When should I use Base64 images?
For small icons and logos where eliminating an extra HTTP request improves performance, for email templates where external images may be blocked, and for embedding images in JSON APIs.
How do I use it in HTML?
<img src='data:image/png;base64,iVBORw0KGgo...' />. The full string starting with 'data:image/' is your complete source.
Does Base64 increase file size?
Yes, by approximately 33%. Best for small images — large images are better served as separate files.
Is my image uploaded?
No. The FileReader API encodes locally — your image never leaves your device.