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Convert Images to Base64
Transform your image into Base64 encoded strings instantly. Perfect for HTML, CSS, and email templates.
Supported File Formats
Upload up to 20 images simultaneously (max 1MB each) in the most popular web formats: JPG, PNG, GIF, WebP, SVG, or BMP. Our converter handles everything from photos and graphics to icons and logos.
Multiple Output Formats
Get your Base64 data in multiple formats: raw Base64 string, complete Data URI, ready-to-use HTML img tags, or CSS background-image property. Copy with one click.
Why Use Base64 Image Encoding?
Reduce HTTP Requests
Embed images directly in HTML/CSS to eliminate extra server requests and speed up page loads.
Email Compatible
Base64 images work reliably in email clients where external images might be blocked.
Self-Contained Files
Create single-file HTML documents with all images embedded - perfect for sharing.
No CORS Issues
Avoid cross-origin resource sharing problems when embedding images in web applications.
Frequently Asked Questions
Is Base64 encoding reversible?
Yes, Base64 encoding is completely reversible. The encoded string contains all the information needed to reconstruct the original image. You can decode a Base64 string back to its original binary format using various online tools or programming libraries.
Will converting to Base64 reduce my image quality?
No, Base64 encoding is a lossless process. The encoding only changes the representation of the data from binary to text; it does not modify the actual image content. When decoded, the image will be identical to the original.
What is the maximum image size I can convert?
Our converter accepts images up to 1MB in size. While larger images can technically be Base64 encoded, the resulting strings become impractically large for most use cases. For optimal performance, we recommend encoding images under 100KB.
Are my images safe when using this converter?
Absolutely. All image processing happens locally in your browser. Your images are never uploaded to any server. We don't collect, store, or have access to any of your image data.
Can I use Base64 images in CSS?
Yes, Base64 images work perfectly in CSS. Use the complete data URI within the url() function for background images. Our converter provides ready-to-use CSS output that you can copy directly into your stylesheet.
Why is my Base64 string so long?
Base64 encoding increases the data size by approximately 33%. A 100KB image will result in a Base64 string of about 133KB. This is a fundamental characteristic of Base64 encoding and one reason why it's best suited for small images.