# Image to Base64 — Free Data URI

Convert an image to a Base64 data URI for HTML/CSS. 100% in your browser — free, no sign-up.

## What is a Base64 data URI?

A data URI encodes an image as a long Base64 text string that can be placed directly inside HTML or CSS instead of linking to a separate file. The browser decodes it back into the image — so the picture travels inside your code with no extra request.

## How it works here

Your image is read and Base64-encoded entirely in your browser, then given to you as a ready-to-paste data URI or a CSS background snippet. Nothing is uploaded, so even private images stay on your device.

## When to use a data URI

Inline a small icon or logo to save an HTTP request, embed an image in a single self-contained HTML email or file, or include a graphic where you cannot host a separate image. It is most useful for small images.

## When not to use it

Base64 makes data about 33% larger and cannot be cached separately by the browser, so it is a poor fit for large images or pictures reused across many pages. For those, a normal image file is faster.

## How to

1. Choose an image — it is encoded in your browser and never uploaded.
2. Copy the Base64 data URI, or the ready-made CSS snippet.
3. Paste it into your HTML or CSS.

## FAQ

**Is my image uploaded?**

No. The image is read and encoded in your browser, so it never leaves your device.

**What do I get back?**

A ready-to-paste Base64 data URI, plus a CSS background snippet, that you can drop straight into HTML or CSS.

**Should I inline large images?**

Usually no. Base64 makes data about 33% larger and cannot be cached separately, so it is best for small icons and logos, not big photos.

**Why use a data URI at all?**

It embeds an image directly in your code, saving an HTTP request and keeping everything in one self-contained file or email.

**Is it free?**

Yes, completely free — no sign-up and no watermark.

**Is my data private?**

Yes — this tool runs entirely in your browser. Your files and text are never uploaded.


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