Image to Base64 Converter

How to convert an image to Base64

1. Add your image. Drag a file onto the box above, click Choose image, or paste an image straight from your clipboard.
2. Copy the result. The converter instantly shows the full data URI plus ready-made HTML and CSS snippets. Hit Copy on whichever one you need.
3. Paste it into your code. Drop the data URI into an <img> tag, a CSS background, a JSON payload, or anywhere a string belongs.

What is a Base64 image / data URI?

A computer image is binary data. Base64 re-expresses that binary as plain text using 64 safe characters (A–Z, a–z, 0–9, + and /). When you prepend a small header like data:image/png;base64, you get a data URI — a self-contained string that a browser treats exactly like a normal image URL, except the picture is baked right into the text. If you only need PNG files, the focused PNG to Base64 converter keeps the same private workflow while matching that search directly.

When embedding an image as Base64 is worth it

• Tiny, frequently-used assets — icons, logos, spinners. Inlining them removes an extra HTTP request.
• Single-file deliverables — an email template, a self-contained HTML report, or a snippet you paste into a CMS where you can't upload files.
• Quick prototyping — you need an image in a CodePen, a JSON mock, or a test fixture without hosting it anywhere.

Example: using the data URI

<!-- HTML -->
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUg..." alt="logo" />

/* CSS */
.logo { background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUg...); }

A note on size

Base64 makes data roughly 33% larger than the original file (4 text characters per 3 bytes). That trade is fine for small images, but for big photos or hero images you're usually better off keeping a normal .jpg/.png file and letting the browser cache it. Use Base64 where the convenience of "everything in one string" outweighs the extra bytes.

Privacy

This tool encodes images locally with the browser's FileReader API. There is no upload step and no server — you can confirm it in your browser's Network tab. That makes it safe for screenshots, internal diagrams, or anything you'd rather not send to a third-party site.