Image Base64 Converter
Image and Base64 conversion
Image Base64 Converter
Professional image Base64 encoding and decoding tool supporting JPG, PNG, GIF, WebP and other formats. Convert images to Base64 strings for web embedding, or restore Base64 back to image files. 100% local processing protects your image privacy and security.
Image to Base64
Convert image to Base64 encoding
🖼️ Upload Image
Drag image here or
Supports JPG, PNG, GIF, WebP formats, max 10MB
📝 Base64 Output
Quick Guide
🖼️ Image to Base64
Upload image files to automatically generate Base64 encoding for web embedding
📝 Base64 to Image
Input Base64 encoding for real-time image preview with download support
🚀 Drag & Drop Upload
Support drag and drop file upload for quick and convenient operation
📚 Complete Image Base64 Guide
In-depth understanding of image Base64 encoding principles, application scenarios, and best practices
Technical Principles Explained
Image Base64 encoding is the process of converting binary image data into ASCII strings. Through Base64 encoding, images can be embedded as text in HTML, CSS, or JSON without requiring separate file requests.
Data URI Format:
data:[mediatype][;base64],dataExample: data:image/png;base64,iVBORw0KGgo...
Supported Formats
📷 JPEG/JPG
Lossy compression for photos
🖼️ PNG
Lossless compression with transparency
🎬 GIF
Animation support, 256 colors
🌐 WebP
Modern format, high compression
Real-World Applications
🌐 Web Development
Embed small icons and background images directly in CSS to reduce HTTP requests
📧 Email Templates
Embed images in HTML emails to ensure proper display
📱 Mobile Apps
Store small icons and UI elements in app configurations
🔧 API Development
Transmit image data in JSON APIs
Usage Considerations
📏 File Size
Base64 encoding increases size by about 33%, suitable for small files
⚡ Performance Considerations
Large images should use traditional file methods to avoid affecting page load
🔐 Privacy & Security
This tool processes completely locally, image data is not uploaded to servers
🚀 Three Simple Steps to Convert
Quick and easy workflow makes image Base64 conversion effortless
Choose Conversion Mode
Select "Image to Base64" or "Base64 to Image" mode based on your needs. The system supports bidirectional conversion for different use cases.
Upload or Input Content
Drag image files to the upload area, or directly paste Base64 encoded strings. Supports multiple mainstream image formats.
Get Conversion Results
Preview conversion results in real-time, copy Base64 code with one click or download image files. Results are instantly available.
❓ Frequently Asked Questions
Answers to common questions about using the Image Base64 converter
QWhat is Base64 encoding and what is it used for?
Base64 is an encoding method that converts binary data into ASCII strings. In web development, Base64-encoded images can be directly embedded in HTML, CSS, or JSON, reducing HTTP requests and improving page load speed. Commonly used for small icons, background images, and email templates.
QWhat image formats are supported? Are there file size limits?
Supports mainstream image formats including JPEG, PNG, GIF, WebP, BMP. We recommend files not exceeding 10MB. For Base64 encoding, small files (a few KB to hundreds of KB) are optimal since encoding increases size by about 33%.
QIs my image data secure? Will it be uploaded to servers?
Completely secure! All conversion operations are performed locally in your browser, and image data is never uploaded to any servers. This means you can safely process sensitive images with complete data control.
QHow do I use Base64-encoded images in web pages?
Copy the generated Base64 code and use it directly as the src attribute in img tags: <img src="data:image/png;base64,...">, or in CSS background images: background-image: url("data:image/png;base64,...")
QWhen is Base64 encoding not recommended?
Large images (over 100KB) are not recommended for Base64 as they significantly increase HTML/CSS file size, affecting page load performance. Frequently changing images are also unsuitable since Base64-encoded images cannot be cached by browsers.
QWhat should I do if conversion fails or displays abnormally?
Please check: 1) Is the image format supported? 2) Is the file corrupted? 3) Is the Base64 string complete and correctly formatted? If problems persist, try different image formats or regenerate the Base64 code.
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Multiple Format Support
Supports mainstream image formats including JPEG, PNG, GIF, WebP, etc. Automatically recognizes formats and generates corresponding Data URIs for correct display in various environments.
Privacy Protection
All image processing is done completely locally in the browser. Image data is not uploaded to any servers, ensuring your privacy and data security. Feel free to process sensitive images.
Convenient Operation
Supports drag-and-drop upload, one-click copy, real-time preview and other convenient features. Clean and intuitive interface with optimized workflow for both beginners and professional users.