Image to Base64
Free online image-to-Base64 tool with drag-and-drop upload — instantly get a Data URI, raw Base64, and CSS background code, with a live size comparison.
Tool Guide
About the Image to Base64 Tool
Drag and drop (or click to select) an image and it's automatically converted to Base64, producing a ready-to-use Data URI, raw Base64 string, and CSS `background-image` snippet.
Key Features
1. Drag-and-Drop Upload
Drop an image onto the drop zone or click to select a file for instant conversion.
2. Multiple Output Formats
Get the Data URI, raw Base64 string, and CSS background style all at once, and copy whichever you need.
3. Size Comparison
Automatically shows the original file size versus the Base64-encoded size, so you can gauge the size overhead.
How to Use
Step 1: Drag an image into the upload area, or click to choose a local file.
Step 2: Wait for the automatic conversion, and check the image dimensions, original size, and Base64 size.
Step 3: Copy the Data URI, raw Base64, or CSS background code as needed.
Use Cases
Handy for inlining small icons into HTML/CSS, embedding images in email templates, and other front-end optimizations that reduce HTTP requests.
FAQ
Does Base64 encoding make the file bigger?
Yes, typically about 33% larger — the tool shows the exact size comparison.
Is the image uploaded to a server?
No. All conversion happens locally in your browser; the image is never uploaded.
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