Convert Any Image to Base64 — Embed in HTML, CSS or Emails

Need to embed a small image directly in your code without an external file? Convert it to Base64 in one click. No upload, no server.

Why convert images to Base64?

Base64 data URIs let you embed images directly in HTML, CSS, or email templates. This eliminates external HTTP requests, prevents broken images if a file is moved, and works in environments where you cannot host files (email signatures, single-file HTML demos, inline CSS).

When should you NOT use Base64?

Base64 increases file size by roughly 33%. For large images, this bloats your HTML and slows page load. It is best reserved for small icons, logos under 5KB, or situations where a single self-contained file is required. The tool warns you if your image exceeds 5MB.

How does it work?

Drag and drop or click to select an image. The tool reads it locally using your browser's FileReader API, encodes it to Base64, and gives you three copy options: raw Base64, full data URI, or a CSS background-image rule. The image never leaves your device.