Image ToolsFree

Image to Base64

Convert any image to a Base64-encoded data URI string for embedding directly in HTML, CSS, SVG, or JSON. Supports JPG, PNG, and WebP. The full data URI is ready to paste anywhere — no separate file hosting needed.

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JPG, PNG, WebP, GIF · Any size

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Frequently Asked Questions

What is a Base64 image data URI used for?▼
Base64 data URIs embed images directly in HTML (<img src='data:...'>) or CSS (background-image: url('data:...')) without requiring a separate image file. This is useful for email HTML, offline apps, SVG files, and reducing HTTP requests in small projects.
Is there an image file size limit?▼
No hard limit. However, very large images produce extremely long Base64 strings. Images over 1MB are not recommended for inline embedding as they significantly increase HTML/CSS file size.
Are my images uploaded to generate the Base64 string?▼
No. The conversion uses the HTML FileReader API entirely in your browser. Your image never leaves your device.