Image to Base64
Convert any image to Base64 encoding. Generate data URIs for embedding in HTML, CSS, or JSON. Free, instant, browser-based.
Instant Encoding
Convert images to Base64 in milliseconds using FileReader API
Copy to Clipboard
One-click copy for HTML <img> tags, CSS backgrounds, or raw Base64
100% Private
All conversion happens in your browser — no uploads
How It Works
- Upload your image — drag & drop or click browse. Any image format works.
- Choose output format — Data URI, HTML img tag, CSS background, or raw Base64 string.
- Copy and use — click "Copy to Clipboard" and paste into your HTML, CSS, or JSON.
Use Cases
Embed small images directly in HTML to reduce HTTP requests. Perfect for icons, logos, and UI elements.
Use Base64 images as background-image in CSS. No separate image files needed.
Embed images in HTML emails. No external hosting — images display immediately.
Send images as Base64 strings in JSON payloads. Useful for APIs that accept inline image data.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a way to represent binary data (like images) as text. A Base64-encoded image can be embedded directly into HTML, CSS, or JSON — no separate file needed.
When should I use Base64 vs regular image files?
Base64 is best for small images (under ~10KB after encoding) like icons, logos, or UI elements. Larger images are better served as separate files — Base64 encoding increases file size by ~33%.
What's a Data URI?
A Data URI looks like data:image/png;base64,iVBORw0K... — it includes both the MIME type and the Base64 data, making it directly usable in <img src="...">.
Is the tool free?
Yes — completely free. No registration, no limits. All conversion happens in your browser using the FileReader API.