Image to Base64 Converter
Convert any image to a Base64 encoded string. Get ready-to-use HTML and CSS code.
How to Use the Image to Base64 Converter
1. Upload an image by clicking the upload area or dragging a file. Supports PNG, JPG, GIF, SVG, WebP, and BMP formats.
2. View file info: See the original file size, encoded Base64 size, and MIME type.
3. Copy the Base64 string for use in your application or API.
4. Copy the HTML img tag to embed the image directly in your HTML without an external file.
5. Copy the CSS code to use the image as a CSS background-image without an external file.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a method of encoding binary data (like images) as ASCII text. This allows you to embed images directly in HTML, CSS, or JSON without needing separate image files.
Why is the Base64 string larger than the original file?
Base64 encoding increases the data size by approximately 33%. This is because it converts every 3 bytes of binary data into 4 ASCII characters. For small images like icons, this trade-off is acceptable.
When should I use Base64 images?
Base64 is ideal for small images (icons, logos under ~10KB) to reduce HTTP requests. For larger images, it is better to use regular image files as Base64 increases page size and cannot be cached separately.
Is my image uploaded to a server?
No. All conversion happens entirely in your browser using the FileReader API. Your image never leaves your device.