Image to Base64 Converter Online
Free online image to Base64 converter. Convert PNG, JPG, WEBP images to Base64-encoded data URIs for embedding in HTML and CSS. No server upload.
Data URI (for HTML/CSS)
Raw Base64
💡 What is this
Image to Base64
- Converts any image file into a Base64-encoded string and a data URI you can embed directly in HTML img tags or CSS background properties.
📖 How to use
Step by Step
- Choose an image from your device
- Base64 and data URI are generated instantly
- Copy the data URI for HTML or the raw Base64
🎯 Use cases
When to use
- Embedding small images in HTML emails
- Inline images in CSS to reduce HTTP requests
- Storing image data in JSON or databases
- Creating self-contained HTML documents
Frequently Asked Questions
How much larger is Base64 than the original?▾
Base64 encoding increases file size by approximately 33%. A 100KB image becomes roughly 133KB of Base64 text.
Should I Base64-encode large images?▾
Generally no. Base64 is best for small icons and graphics under 10KB. Larger images are better served as regular files.