Image to Base64

An image to Base64 converter encodes an image file as text — the data URI (data:image/png;base64,iVBORw0…) that embeds the picture directly inside HTML, CSS, JSON or JavaScript instead of referencing a separate file. The image becomes part of the code.

The trade is requests versus bytes: an inlined image saves an HTTP request (once meaningful, less so under HTTP/2+) but costs ~33% size overhead (Base64's encoding tax) and loses independent caching. The sweet spot is small: icons, tiny logos and placeholder images under a few KB inline well; photos don't.

Upload the image and copy its Base64 data URI.

Where inlining earns its place: small icons and decorations in CSS (one stylesheet, zero extra requests — the classic use), self-contained single-file HTML (email templates where linked images get blocked, offline documents, code demos in sandboxes), images inside JSON payloads (APIs and configs that must carry a picture in text), and quick prototyping without asset hosting. The email case is prominent: embedded images display without the "load images?" gate — though size discipline matters doubly there.

The judgment rule: under ~5 KB, inline freely; 5–20 KB, consider; beyond, host the file — the 33% overhead plus lost caching outweigh the request saved. And note data URIs bloat the containing file visibly: a stylesheet carrying ten inlined icons wears them in its size. Files are converted and returned, not stored.