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Encode small icons, logos, and graphics into ready-to-paste `data:image/...;base64` strings 100% locally in your browser.
Your inputs stay in your browser. Make something useful.
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Here’s how to get the most out of image to base64.
Inlining tiny icons or email signature logos as Base64 Data URIs eliminates extra HTTP requests. Keep in mind that Base64 encoding increases byte size by roughly **33%**, so only inline small icons (typically under 10 KB) and serve larger photos as compressed WebP files.
A few things you might want to know before you start.
Base64 increases payload size by ~33% and blocks separate browser image caching when embedded directly in HTML or CSS.
Use our related Base64 Encode & Decode developer tool linked below.
Run it through our Image Compressor first so the resulting Base64 string is as short as possible.
No. FileReader converts the file locally in your browser memory.
