Developer Tools
Image to Base64 Converter
Upload an image and instantly get its Base64 data URI for embedding in HTML, CSS, or code.
🖼️
Click or drag & drop an image here
Supports PNG, JPG, GIF, WebP, SVG
Embed images directly in your HTML, CSS, or JSON without hosting them on a server. Upload any image and instantly get the Base64 data URI — copy it as a raw Base64 string, full data URI, CSS background-image property, or HTML img tag with the encoded source already filled in.
Features
Multiple Output Formats
Get the image as a data URI, raw Base64 string, CSS background, or HTML img tag.
Drag & Drop Upload
Drag and drop your image or click to browse — supports PNG, JPG, GIF, WebP, and SVG.
File Info
Shows original file size and resulting Base64 string size.
Image Preview
Previews the uploaded image before copying the code.
How to Use
- Click the drop zone or drag an image file onto it.
- The Base64 output appears instantly.
- Select the output format: Data URI, Base64 Only, CSS Background, or HTML img.
- Click 'Copy' to copy the result to your clipboard.
FAQ
What is a Base64 data URI?▾
A data URI embeds the image data directly in the URL as a Base64-encoded string, eliminating the need for a separate HTTP request to load the image.
When should I use Base64 images?▾
Best for small icons, logos, or critical above-the-fold images where avoiding an extra HTTP request improves performance. Large images increase HTML/CSS file size significantly.
Does Base64 increase file size?▾
Yes. Base64 encoding increases file size by approximately 33% compared to the original binary image.
What image formats are supported?▾
PNG, JPG/JPEG, GIF, WebP, BMP, and SVG — any format your browser can read as a File.
Base64 Use Cases
- Inline CSS background images to avoid extra requests
- Email HTML — embed images that aren't blocked by clients
- Single-file HTML pages with no external assets
- JSON payloads that include image data
- Small icons and favicons in JavaScript bundles
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