Image to Base64 Converter
Convert images to Base64 encoded data instantly. Easy to use Base64 encoder for PNG, JPG, JPEG, SVG, GIF, and WebP images. Perfect for embedding in HTML, CSS, and JavaScript.
Select Your Image and Convert
Upload Image
Click to browse or drag & drop
Supports PNG, JPG, JPEG, SVG, GIF, WebP
Max. 4 MB Limit
Encoded Output
Image Format Support Comparison
Base64 Converter Performance Metrics
How to Convert Image to Base64
Step 1: Select Your Image
Click the upload area or drag and drop your image file. The tool supports PNG, JPG, JPEG, SVG, GIF, and WebP formats up to 4MB. You'll see an instant preview of your image along with file details including name, size, type, and dimensions. The preview helps you verify you've selected the correct image before conversion.
Step 2: Choose Output Format
Select your desired output format from the dropdown menu. Base64 Plain String gives you the raw encoded data, Data URI includes the data:image prefix for direct use, HTML img code generates a complete HTML image tag, and CSS Background creates the CSS background-image property. Choose based on where you'll use the encoded image.
Step 3: Convert Automatically or Manually
With Auto Update enabled (default), the conversion happens instantly when you upload an image. If disabled, you'll need to click the Convert button manually. Auto update is convenient for quick conversions, while manual mode gives you more control when working with multiple images or comparing different formats.
Step 4: Copy or Download Results
Each output format has its own copy and download buttons. Click the Copy button (📋) to instantly copy the Base64 string to your clipboard for pasting into your code editor. Use the Download button (☁️) to save the encoded data as a text file. You can copy or download any format independently.
Key Features
Multiple Format Support
Convert PNG, JPG, JPEG, SVG, GIF, and WebP images to Base64 encoding. Our tool handles all common web image formats with perfect accuracy, ensuring your encoded images work flawlessly across all browsers and platforms.
Instant Conversion
Convert images to Base64 instantly with our high-speed encoding algorithm. All processing happens in your browser using JavaScript, providing immediate results without server delays or network latency.
Multiple Output Formats
Get Base64 output in plain string, Data URI, HTML img tag, or CSS background-image format. Each format is optimized for different use cases, from embedding in JavaScript to direct HTML/CSS integration.
Complete Privacy
Your images never leave your device. All encoding happens client-side in your browser with no server uploads. Perfect for sensitive images, confidential designs, and proprietary graphics that require complete privacy.
Image Preview
View your image before and during conversion with our built-in preview feature. Check image details including filename, file size, format, and dimensions to ensure you're encoding the correct image with proper specifications.
Copy & Download
Copy Base64 strings directly to clipboard or download as text files. Separate copy and download options for each output format give you maximum flexibility in how you export and use your encoded images.
Understanding Base64 Encoding
What is Base64 Encoding?
Base64 is an encoding scheme that converts binary data (like images) into ASCII text format using 64 different characters (A-Z, a-z, 0-9, +, /). This encoding allows binary image files to be represented as plain text strings, making them easy to embed directly in HTML, CSS, JavaScript, JSON, XML, and other text-based formats. The encoded string increases file size by approximately 33% but eliminates the need for separate HTTP requests to load images.
Base64 encoding works by dividing the binary data into groups of 3 bytes (24 bits) and then splitting those into 4 groups of 6 bits each. Each 6-bit group is represented by one of the 64 characters in the Base64 alphabet. This process ensures that the resulting string contains only printable characters that can be safely transmitted through systems that handle text data.
When to Use Base64 Images
✅ Good Use Cases
- Small icons and logos (< 10KB)
- SVG graphics
- Email templates
- Single-page applications
- Reducing HTTP requests
- API responses with images
❌ Avoid For
- Large photos and images
- Frequently cached images
- Responsive images
- SEO-critical images
- Images needing lazy loading
- Content delivery networks
Common Use Cases
📧 Email Templates
Embed images directly in HTML email templates without relying on external image hosting. Base64 images ensure your email displays correctly even when recipients have images blocked by default, improving email deliverability and user experience.
🎨 CSS Styling
Use Base64 encoded images as CSS background images, avoiding separate HTTP requests for small graphics like icons, patterns, or decorative elements. This reduces page load time and improves performance, especially for above-the-fold content.
📱 Mobile Applications
Embed images in mobile app configurations, JSON data, or local storage. Base64 encoding simplifies image handling in hybrid apps, progressive web apps, and applications where binary data needs to be stored as text in databases.
🔌 API Responses
Include images in JSON API responses without requiring separate image endpoints. Perfect for RESTful APIs, GraphQL queries, and microservices where you want to package image data with other response data in a single payload.
⚡ Single Page Apps
Bundle small images directly in your JavaScript or HTML for single-page applications. Reduce the number of HTTP requests during initial page load and improve perceived performance by eliminating image loading delays for critical UI elements.
📄 Documentation
Embed screenshots and diagrams in markdown documentation, README files, or technical documentation that needs to remain self-contained. Base64 images ensure documentation displays correctly without depending on external image hosting services.
Frequently Asked Questions
Advantages vs Disadvantages of Base64 Images
✅ Advantages
- Reduced HTTP Requests: Fewer server requests improve page load speed
- No External Dependencies: Images embedded directly in code
- Email Compatibility: Works in HTML emails without hosting
- Single File Distribution: Easy to share complete HTML/CSS files
- Offline Availability: No broken image links
- API Simplicity: Include images in JSON responses
❌ Disadvantages
- Larger File Sizes: 33% size increase over binary
- No Browser Caching: Re-downloaded with each page
- Poor SEO: Not indexed by search engines
- Increased Bandwidth: More data transferred
- No Lazy Loading: Loaded with HTML/CSS
- Limited Responsiveness: Can't use srcset or sizes