Image to Base64
Free image to Base64 encoder. Convert any image to a Base64 data URI with ready-to-use HTML and CSS snippets and one-click copy — encoded privately in your browser.
Drag & drop an image, or click to choose
JPG, PNG, GIF, SVG or WebP — encoded privately in your browser
🔒 Your image never leaves your device — it is encoded entirely in your browser.
Free Image to Base64 Encoder
This free online image to Base64 tool turns any image into a Base64 data URI you can paste
straight into your HTML, CSS or JavaScript. Drop in a JPG, PNG, GIF, SVG or WebP and instantly get a
data:image/…;base64,… string, a raw-Base64-only version, and ready-to-use code
snippets. It is completely free and 100% private — your image is encoded right in your browser and is
never uploaded to a server.
How to use
- Upload an image by dragging it in or clicking the box to choose a file.
- See the preview, original file size and the encoded Base64 size.
- Tick Raw Base64 only if you want the string without the
data:…;base64,prefix. - Click Copy Base64, or copy a ready-made
<img>, CSS or data-URI snippet. - Paste it into your HTML, stylesheet or code — no separate image file needed.
What is a Base64 data URI and when to use it
Base64 is a way of writing binary data — like an image — using only plain text characters. A
data URI wraps that text with a small header, for example data:image/png;base64,iVBOR…,
so a browser can read it as if it were a real image file. Because the whole picture lives inside the string, you
can embed it directly in an HTML page, a CSS background-image rule, an email template or a JSON
payload without hosting a separate file.
The big advantage is fewer HTTP requests: a small icon, logo or background embedded as Base64 loads with the page itself instead of triggering an extra round-trip to the server, which can make a page feel faster. It is also handy for self-contained files, offline demos and inline SVGs. The trade-off is size — Base64 makes data roughly 33% larger than the original binary, and the string cannot be cached separately by the browser. For that reason it works best for small images. For large photos, a normal hosted file is usually the better choice.