Drop an image here or browse files

One image at a time · PNG, JPG, WebP, GIF, SVG… — converted 100% in your browser

One image at a time Tip: you can also paste an image from your clipboard (Ctrl/Cmd + V).

Image to Base64 Converter — Free Online Tool

Turn any image into a base64 data URL instantly — ready to paste into HTML, CSS or JavaScript. Private, free, no uploads.

Your converted image will appear here — drop an image above to begin.

Instant results — no waiting

No sign-up needed

Free forever

How it works

1Drop an image above, browse your files, or paste from the clipboard.

2It converts to base64 instantly, right in your browser.

3Copy the code or download it as a .txt file and use it anywhere.

Frequently asked questions

Is my image uploaded to a server?

No. The conversion uses your browser's built-in FileReader API, so your image never leaves this page — nothing is uploaded or stored anywhere.

What exactly is a base64 data URL?

It is the image's binary data encoded as plain text, starting with a prefix like data:image/png;base64,. Data URLs let you embed an image directly inside HTML, CSS or JavaScript without a separate image file.

Why is the base64 string larger than the original file?

Base64 encodes every 3 bytes of data as 4 text characters, so the output is about 33% larger than the original image. That is normal — it works best for small images like icons and logos.

Base64 data-URL output · ~33% larger than the original · 100% local — your image never leaves this page.