Image to Base64

Convert images to Base64 data URIs online for free. Copy the encoded string for embedding in HTML, CSS or JSON.

Drag & drop an image here, or click to choose

—Original size

—Base64 characters

Base64 data URI:

Upload an image to generate its Base64 data URI…

Everything runs locally in your browser — nothing is uploaded.

How to use

Upload an image and its Base64 data URI appears automatically. Copy it with one click and paste it into your HTML, CSS or code.

Is the image-to-Base64 converter free?

Yes, free with no limits or signup.

Are my images uploaded?

No. Encoding happens locally in your browser.

What is a data URI?

A string like data:image/png;base64,... that embeds the image directly in HTML, CSS or code — no separate file needed.

Why is the output so long?

Base64 is ~33% larger than the original file. Compress your image first if you need a shorter string.

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Every tool runs 100% in your browser — no uploads, no signups. If a tool saved you time, consider supporting us with a small donation.