Image to Base64
Convert images to Base64 strings and decode Base64 back to images. Supports PNG, JPG, GIF, WebP, SVG, BMP, ICO. 100% browser-based, no upload.
What image formats are supported?
This tool supports PNG, JPG/JPEG, GIF, WebP, SVG, BMP, and ICO image formats for both encoding and decoding.
What is Base64 image encoding?
Base64 encoding converts binary image data into an ASCII string format using 64 printable characters. This allows images to be embedded directly in HTML, CSS, or JSON without external file references.
Is my image uploaded to a server?
No, all processing happens locally in your browser. Your images never leave your device, ensuring complete privacy and security.
What is the maximum image size?
There is no strict limit, but very large images may slow down the browser. For best performance, keep images under 10MB.
How do I use Base64 output in HTML?
Use the data URI scheme: <img src="data:image/png;base64,YOUR_BASE64_STRING">. Replace YOUR_BASE64_STRING with the encoded output.
How do I use Base64 output in CSS?
Use the data URI in CSS: background-image: url("data:image/png;base64,YOUR_BASE64_STRING"). This embeds the image directly in your stylesheet.
Why convert images to Base64?
Base64 encoding is useful for embedding small images directly in code, reducing HTTP requests, embedding images in emails, or transmitting image data through text-only channels.
Does Base64 increase file size?
Yes, Base64 encoding increases the data size by approximately 33% compared to the original binary file. It is best suited for small images like icons and logos.
Can I decode Base64 back to an image?
Yes, this tool supports bidirectional conversion. Paste a Base64 string and it will decode it back to a viewable and downloadable image.
What is a data URI?
A data URI (Uniform Resource Identifier) is a URI scheme that allows inline data in web pages. For images, the format is data:image/[type];base64,[encoded data], enabling images to be embedded without separate files.
Is this tool free to use?
Yes, this tool is completely free with no registration required. All processing runs in your browser for maximum privacy.
Can I convert SVG to Base64?
Yes, SVG images can be converted to Base64. However, since SVG is already text-based XML, Base64 encoding may not be the most efficient approach for SVG files.
How to Use Image to Base64
Convert PNG, JPG, GIF, WebP, SVG, BMP, or ICO images into Base64 text, or decode Base64 back into an image — everything runs in your browser and nothing is uploaded.
- Select or drop an image (PNG, JPG, GIF, WebP, SVG, BMP, or ICO) into the tool.
- The encoded text replaces the “Base64 output will appear here...” hint in the output area.
- Choose the output style: Raw Base64, Data URI, HTML <img>, or CSS background.
- Copy the result into your HTML, CSS, or JavaScript code.
- To go the other way, paste a Base64 string into the input and save the decoded image.
Raw Base64 alone is not a valid image source — use the Data URI form (data:image/png;base64,...) directly in CSS or HTML.
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