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.
Discover more free tools to boost your productivity
Box
Create beautiful box shadow with our free box shadow css generator. Generate custom box shadow css with 60+ preset effects, live preview & instant Tailwind and CSS box shadow code.
Gradient
Create beautiful gradient background using tailwind CSS Gradient Generator. Use 90+ presets to generate customized tailwind, CSS gradient background code quickly with live preview.
HEX: #ff5733
RGB: 255, 87, 51
HEX: #4a90e2
RGB: 74, 144, 226
Convert HEX color codes to RGB values instantly with our free HEX to RGB converter. Learn how HEX to RGB conversion works, understand color formats, and get accurate RGB values for web development.
Blog Post
Transform your content...
Social Post
Transform any blog post into engaging, platform-optimized content using our Blog to Social Media Post Generator. Powered by AI to maintain your message while adapting tone and style.
Subscribe to FrontendGeek Hub for frontend interview preparation, interview experiences, curated resources and roadmaps.
All in One Preparation Hub to Ace Frontend Interviews. Master JavaScript, React, System Design, and more with curated resources.
© 2026 FrontendGeek. All rights reserved