Image to Base64 — A Base64 data URL embeds an image directly in HTML or CSS, avoiding an extra request. This tool encodes images up to 2 MB and shows the resulting string with its character count so you can judge whether embedding is sensible.
Your image is encoded locally in your browser and never uploaded.
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What is image to base64?
A Base64 data URL embeds an image directly in HTML or CSS, avoiding an extra request. This tool encodes images up to 2 MB and shows the resulting string with its character count so you can judge whether embedding is sensible.
For anything larger, linking a real file is almost always the better choice — Base64 also adds ~33% size overhead.
How to use it
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Choose a small image
Under 2 MB is recommended.
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Copy the data URL
Paste it into a src attribute or CSS url().
Examples
Embedding in HTML
The data URL goes straight into the src attribute.
Result: <img src="data:image/png;base64,iVBORw0KGgo…" alt="">
Frequently asked questions
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Last reviewed: 2026-09-18