How to Convert an Image to Base64

You want an icon or logo living right inside your HTML or CSS, with no extra file to ship. Base64 encoding does exactly that: it turns the image into a text string you paste inline. This guide shows what Base64 is, when to use it, and how to get a copy-ready data URI in seconds.

TL;DR — Use the image to Base64 tool to encode any image to a data URI, copy the string or a CSS snippet, and paste it straight into your code. Free, and nothing is uploaded.

What you get back

The tool hands you four copy-ready forms of the same image:

When to use Base64 (and when not to)

Inlining as Base64 trades an extra network request for a bigger payload, so it pays off only for small files.

• Good fit: tiny icons, logos, sprites, and images inside HTML emails, where every saved request matters and the file is a few kilobytes.
• Skip it for: large photos and hero images. Base64 adds about 33 percent to the size, cannot be cached separately, and blocks the surrounding HTML or CSS from loading until it is parsed. A normal image file wins there.

Step by step: encode an image

1. Open the image to Base64 tool and drop in a PNG, JPG, WebP, GIF, SVG or AVIF.
2. Copy the form you need — the full data URI, the raw string, a CSS line, or a finished img tag.
3. Paste it into your code and the image renders inline, no separate file required.

Tip: If the encoded string feels huge, compress the image or convert it to WebP first. A smaller source means a shorter Base64 string.

Using it in CSS and HTML

• CSS: drop the background line into a selector, for example .logo { background-image: url("data:image/svg+xml;base64,…"); }.
• HTML: set the data URI as the src of an img, and always keep a meaningful alt for accessibility.
• SVG icons encode especially well, since they are small and stay crisp at any size.

Where to go next

• Convert images to WebP — shrink the source before encoding.
• Compress images without losing quality — keep the Base64 string short.