💻 Convert Image to Base64 Online — Free & Private
Drop an image and instantly get its Base64 representation. Perfect for embedding images in HTML, CSS, emails or JSON without hosting a file.
Input
Result
Private by design. This tool runs entirely in your browser — nothing you enter or add is uploaded to any server.
How it works
- Click the upload area or drag and drop an image file (JPG, PNG, WebP, GIF).
- The tool reads the file locally with the FileReader API and converts it to a data URL.
- Copy the Base64 string and paste it wherever you need an embedded image.
Examples
- Use the data URL as a CSS background-image: url(data:image/png;base64,...).
- Embed a small logo inside a JSON configuration file.
- Share image data in plain text when file upload is not available.
Frequently asked questions
Is my image uploaded to a server?
No. Conversion uses the browser's FileReader and never leaves your device.
What formats are supported?
Any image format the browser can display: JPG, PNG, WebP, GIF, BMP, AVIF and more.
Why is the output so long?
Base64 encoding increases size by roughly 33 percent. Large images produce very long strings.
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