How to Convert Image to Base64 Online
100% Client-SideImage to Base64 encodes PNG, JPG, WebP, and GIF images into ASCII Base64 text strings and HTML Data URIs. Web developers use Base64 strings to embed images directly into HTML, CSS stylesheets, or JSON API payloads without making extra HTTP requests. Using the native HTML5 FileReader API, encoding is computed 100% locally in your browser with complete data privacy.
Open Image to Base64 ConverterHow It Works
Select Image
Drop or select any PNG, JPG, WebP, or GIF graphic file from your computer or phone.
Instant Encoding
The browser reads the binary file buffer and generates both a raw Base64 string and a formatted Data URI.
Copy or Export
Copy the output directly to your clipboard or download the string as a .txt document.
Frequently Asked Questions
What is the difference between raw Base64 and a Data URI?
Raw Base64 contains only the encoded binary character string, whereas a Data URI includes the MIME type header prefix (e.g. data:image/png;base64,...), allowing web browsers and CSS files to render the image directly inline.
Are my images uploaded to a server when converting to Base64?
No. The entire Image to Base64 conversion runs locally inside your browser using the HTML5 FileReader API. Your images never leave your device.