Image to Base64 Converter

What is Base64 Encoding?

Base64 is a text-based encoding scheme that converts binary data (like images) into ASCII text characters. This makes it possible to embed images directly into HTML, CSS, JSON, and other text-based formats without needing separate image files. Base64 uses 64 printable ASCII characters (A-Z, a-z, 0-9, +, /) to represent any binary data.

Why Convert Images to Base64?

• Inline Images: Embed images directly in HTML or CSS without external file requests
• Email Embedding: Include images in email clients that support data URIs
• Data URLs: Create data URIs for use in web applications and APIs
• Reduce HTTP Requests: Fewer external files means faster page loads in some cases
• API Integration: Send images to APIs that accept Base64 encoded data
• Data Storage: Store images in databases or JSON files as encoded strings

How to Use This Image to Base64 Converter

Encoding Images to Base64:

1. Click the upload area or drag and drop an image file
2. Preview your image instantly
3. Choose your output format: raw Base64, data URI, CSS, HTML, or Markdown
4. Click the copy button to copy your encoded image to clipboard
5. Use it anywhere you need embedded image data

Decoding Base64 to Image:

1. Go to the "Base64 → Image" tab
2. Paste your Base64 string (works with or without the data URI prefix)
3. Click "Preview Image" to decode and display
4. Download the decoded image as PNG if needed

Supported Image Formats

This tool supports all common image formats including PNG, JPG, GIF, WebP, SVG, BMP, TIFF, and more. The tool automatically detects the image type and generates the correct MIME type in the data URI.

Privacy & Security

All image encoding and decoding happens completely in your browser. Your images never leave your device—they are not uploaded to any server. This tool works entirely offline once loaded.

Frequently Asked Questions

What's the difference between Base64 and a data URI?

A data URI is a complete URL scheme that includes the MIME type and Base64 encoded data. For example: data:image/png;base64,iVBORw0KG.... Base64 is just the encoded string without the URI prefix. This converter provides both formats for your convenience.

Why is my Base64 larger than my original image?

Base64 encoding increases file size by approximately 33% because it represents 3 binary bytes using 4 text characters. For images, this is generally not a problem when embedding small graphics or icons, but for large images, it's often better to link to the image file directly.

Can I use Base64 images on the web?

Yes! You can use data URIs in CSS background-image properties, HTML img src attributes, and more. However, be aware that very large Base64 strings can impact page load performance. Use this technique primarily for small icons and graphics.

What's the maximum image size this converter supports?

This converter can handle images up to the browser's memory limit, which is typically several hundred megabytes. However, for best performance, keep images under 5MB.

How do I use the decoded image in my project?

After decoding, you can download the image and use it normally. Alternatively, you can copy the data URI and use it directly in your HTML img tags or CSS background-image properties.