Base64 Tools

Image to Base64 Converter

Convert images to Base64 encoded strings

How to Convert Image to Base64

  1. 1Click upload or drag-and-drop your image file
  2. 2Supported formats: PNG, JPG, GIF, SVG, WebP
  3. 3Preview your image before conversion
  4. 4Copy the Base64 string or download as text file
  5. 5Share converted images directly to social media or messaging apps

Common Use Cases

Share Converted Images

Easily share Base64 converted images with colleagues or on social platforms

Embed in HTML/CSS

Embed small images directly in HTML or CSS to reduce HTTP requests

Email Templates

Create portable email templates with inline images

JSON API Transfer

Send images through REST APIs without multipart uploads

Frequently Asked Questions

How to convert an image to Base64?

Upload your image using our tool, and it will instantly convert it to a Base64 encoded string that you can copy and use.

What image formats are supported?

We support PNG, JPG, JPEG, GIF, SVG, and WebP formats. All common web image formats are compatible.

Why is the Base64 output larger than my image?

Base64 encoding increases file size by approximately 33% because it represents binary data using ASCII characters.

When should I use Base64 for images?

Use Base64 for small images (< 10KB), icons, logos, and loading placeholders. Avoid for large photos or frequently changing images.

Best Practices

  • ✓Compress and optimize images before converting to Base64
  • ✓Use only for images smaller than 10KB for best performance
  • ✓Consider lazy loading for multiple Base64 images
  • ✓Prefer regular <img> tags for large photos to enable caching

Code Examples

// Convert image file to Base64
function imageToBase64(file) {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = () => {
      const base64 = reader.result; // Includes data URL prefix
      resolve(base64);
    };
    reader.onerror = reject;
    reader.readAsDataURL(file);
  });
}

// Usage with file input
document.querySelector('input[type="file"]').addEventListener('change', async (e) => {
  const file = e.target.files[0];
  const base64 = await imageToBase64(file);
  console.log(base64); // data:image/png;base64,iVBORw0KG...

  // Get only Base64 string (without prefix)
  const base64Only = base64.split(',')[1];
});

// Convert image URL to Base64
async function urlToBase64(url) {
  const response = await fetch(url);
  const blob = await response.blob();
  return imageToBase64(blob);
}