Convert images to base64 strings instantly with preview
How to Use
1Click 'Upload Image' and select your image file
2View the image preview and file size comparison
3Copy the base64 string with one click
4Or download the base64 string as a TXT file
5Use base64 in HTML img tags, CSS background, or data URLs
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Frequently Asked Questions
What is base64 encoding?▼
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to embed images directly in HTML, CSS, or JSON without needing separate files.
Why use base64 for images?▼
Base64 allows you to embed images directly in code, reducing HTTP requests. It's useful for small icons, logos, or when you need to include images in CSS, HTML, or data URLs without external files.
Does base64 increase file size?▼
Yes, base64 encoding increases file size by approximately 33%. The tool shows both original and base64 sizes so you can compare. For large images, consider using the original file instead.
What image formats are supported?▼
The tool supports all common image formats including PNG, JPG/JPEG, GIF, WebP, BMP, and more. Any image that can be displayed in a browser can be converted to base64.