Image to Base64 Converter
Convert images to Base64 data URIs for embedding in HTML, CSS, or JavaScript. All processing in your browser.
Drop an image here or click to upload
Supports PNG, JPG, GIF, SVG, WebP, BMP, ICO
About Image to Base64 Converter
Convert any image to a Base64-encoded string that you can embed directly in your HTML, CSS, or JavaScript code. This eliminates the need for separate image files, reducing HTTP requests.
When to Use Base64 Images
- Small icons and logos: Embed icons under 5KB directly in CSS to save HTTP requests
- Email templates: Inline images that render without external hosting
- Single-file applications: Self-contained HTML files with embedded images
- CSS backgrounds: Small decorative images and patterns
- Data URIs in JavaScript: Dynamic image generation and canvas exports
Output Formats
- Data URI: Full
data:image/png;base64,...string for use anywhere - Raw Base64: Just the encoded string, useful for API payloads
- HTML img tag: Ready-to-paste
<img>element with data URI src - CSS background:
background-image: url(data:...)declaration - Markdown:
syntax for Markdown documents
FAQ
How much larger is a Base64 image?
Base64 encoding increases file size by approximately 33%. A 10KB image becomes about 13.3KB of Base64 text. For small images (under 5KB), this overhead is negligible compared to the saved HTTP request.
Is my image uploaded anywhere?
No. All conversion happens locally in your browser using the FileReader API. Your image never leaves your device.
What image formats are supported?
PNG, JPEG, GIF, SVG, WebP, BMP, and ICO. Any format your browser can display can be converted to Base64.