🔗 Image to Base64 Converter
Convert images to Base64 strings for HTML, CSS, and web development — instant, private, browser-based.
How to Convert Images to Base64
Upload
Select an image file or paste from clipboard. PNG, JPG, WebP supported.
Convert
Image is instantly encoded to Base64 string in your browser.
Copy
Full Base64 string is ready to copy with one click.
Embed
Paste into HTML, CSS, JSON, or any text-based format.
Key Features
Instant Encoding
Conversion happens immediately in your browser. No server delays.
Copy Ready
Complete data URI format ready to paste into your code.
Private Processing
No uploads. Your images stay on your device throughout the process.
Format Support
PNG, JPG, WebP, and ICO formats fully supported.
Developer Use Cases
📧 Email HTML
Embed images in HTML emails where external images may be blocked by clients.
🌐 Web Pages
Embed small icons and logos directly in HTML to reduce HTTP requests.
📦 API Payloads
Include image data in JSON requests for APIs that accept Base64 input.
📱 Single-File Apps
Create portable HTML files with embedded images that work offline.
🎨 CSS Backgrounds
Embed background images in CSS for self-contained stylesheets.
💾 CMS Storage
Store small images as text in databases for icons and thumbnails.
Base64 Format Output
Each format has its own data URI prefix for embedding.
| Format | Data URI Prefix | Best For |
|---|---|---|
| PNG | data:image/png;base64, | Icons, logos, screenshots |
| JPEG | data:image/jpeg;base64, | Photographs, complex images |
| WebP | data:image/webp;base64, | Modern web optimization |
| ICO | data:image/x-icon;base64, | Favicons |
Frequently Asked Questions
Why use Base64 encoding?
Base64 lets you embed images in text-based formats like HTML, CSS, and JSON. Useful for emails, APIs, and reducing HTTP requests.
Does Base64 increase file size?
Yes, approximately 33% larger. Only use for small images under 10-15KB. Larger images should be served as separate files.
How do I embed in HTML?
Use: <img src="data:image/png;base64,YOUR_STRING">. Replace YOUR_STRING with the copied Base64 data.
Is there a size limit?
No hard limit, but browsers have practical limits around 2MB for data URIs. Large images work better as separate files.
💡 Pro Tip: Only embed images smaller than 10-15KB as Base64. Larger images increase HTML/CSS size significantly and slow initial page render.