Convert text, files, and images to Base64 or Data URIs.
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Starting points for your own code. Run them in the environment shown below.
Node.js 22+ · ES module (.mjs)
Current inputs apply only to fields used by the example. Selected files are not embedded.
Install dependencies
const text = "안녕 tools";
const encoded = Buffer.from(text, "utf8").toString("base64");
const dataUri = "data:text/plain;charset=utf-8;base64," + encoded;
console.log(encoded);
console.log(dataUri);
console.log(Buffer.from(dataUri.slice(dataUri.indexOf(",") + 1), "base64").toString("utf8"));Convert text, files, and images to Base64 or Data URIs.
Preserves Data URI MIME and bytes. Image previews allow only PNG, JPEG, WebP, and GIF.
Files 5 MB
Split inputs that exceed the limit. If a format or algorithm is unsupported, choose a tool that matches your requirements instead of silently changing the format.