Free Base64 to Image Converter Online tool. Convert images to Base64 strings or decode Base64 to image instantly. Perfect for embedding images in HTML, CSS, or JSON.
Click to upload image
PNG, JPG, GIF up to 5MB
Image will display here
A Base64 image is a binary image file that has been encoded into a text string using Base64 encoding. This allows images to be embedded directly in HTML, CSS, JSON, or other text-based formats without requiring separate image files or external URLs.
Key Benefits:
• Embed images directly in HTML/CSS without external files
• Reduce HTTP requests by inlining small images
• Store images in databases as text strings
• Include images in JSON APIs and configuration files
• Create self-contained HTML documents
Base64 images are commonly used for small icons, logos, thumbnails, and images that need to be embedded inline. However, they increase file size by approximately 33%, so they're best suited for smaller images rather than large photographs.
Converting images to Base64 and vice versa can be done using various methods. Here are the most common approaches:
Convert image to Base64 using FileReader:
// Image to Base64
const fileInput = document.querySelector('input[type="file"]');
const reader = new FileReader();
reader.onload = (e) => {
const base64 = e.target.result;
// base64 contains: "data:image/png;base64,iVBORw0KG..."
console.log(base64);
};
reader.readAsDataURL(fileInput.files[0]);
// Base64 to Image
const base64String = 'data:image/png;base64,iVBORw0KG...';
const img = document.createElement('img');
img.src = base64String;
document.body.appendChild(img);Use base64 module to encode/decode images:
import base64
# Image to Base64
with open('image.png', 'rb') as image_file:
encoded_string = base64.b64encode(
image_file.read()
).decode('utf-8')
print(encoded_string)
# Base64 to Image
decoded_data = base64.b64decode(encoded_string)
with open('decoded_image.png', 'wb') as image_file:
image_file.write(decoded_data)Use Base64 images directly in HTML:
<!-- Inline image in HTML -->
<img src="data:image/png;base64,iVBORw0KG..."
alt="Base64 Image" />
<!-- In CSS -->
background-image: url('data:image/png;base64,iVBORw0KG...');
<!-- In JSON -->
{
"image": "data:image/png;base64,iVBORw0KG..."
}Our Image Base64 encoder and decoder tool makes it incredibly easy to convert images to Base64 and vice versa. Follow these simple steps:
Select the Encode tab to convert an image to Base64, or the Decode tab to convert a Base64 string back to an image.
For encoding, click the upload area and select an image file (PNG, JPG, GIF up to 5MB). For decoding, paste your Base64 string in the input field. The conversion happens automatically.
Click the Copy button to copy the Base64 string to your clipboard. For decoded images, you can right-click and save the image, or use the Base64 string in your code.
Paste the Base64 string into your HTML, CSS, JSON, or code. For HTML, use it in an img tag with data:image/type;base64, prefix. For CSS, use it in url() functions.
This tool supports images up to 5MB in size. For larger images, consider using command-line tools or programming libraries. Keep in mind that Base64 encoding increases file size by approximately 33%, so very large images will result in very long Base64 strings.
This tool supports all common image formats including PNG, JPG/JPEG, GIF, WebP, BMP, and SVG. The Base64 encoding works with any image format, and the decoded image will maintain its original format.
Use the Base64 string in an img tag with the data URI format:
<img src="data:image/png;base64,YOUR_BASE64_STRING" alt="Description" />
Yes! You can use Base64 images in CSS background properties:
.background { background-image: url('data:image/png;base64,YOUR_BASE64_STRING'); }
Base64 encoding increases the size of binary data by approximately 33%. This is because Base64 uses 4 characters to represent every 3 bytes of binary data. A 1MB image will result in approximately 1.33MB of Base64 text. This is why Base64 images are best suited for small images like icons, logos, and thumbnails.
Yes! All image processing happens entirely in your browser using JavaScript. Your images are never sent to any server, stored, or shared. Everything is processed locally on your device, ensuring complete privacy and security.
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