Convert Images to Base64

Drop any common image — PNG, JPG, WebP, GIF or SVG — and get Base64 or a Data URI with the format detected automatically, all in your browser.

Input — Image file○ Waiting for input

Drag & drop an image here

Browser-only
No uploads
Free
No registration

Your files and data stay in your browser.

Inspection Report

File metadata

Detected Type: —
MIME Type: —
Encoding: —
Input Length: —
Decoded Size: —
Padding Status: —
Data URI: —
File Signature: —
Preview Availability: —

How to convert Images to Base64

To convert an image to Base64, drag the file onto the tool above or choose it from your device. It detects the image format automatically from the file's actual bytes — PNG, JPG, WebP, GIF or SVG — then shows a preview and gives you the Base64 string, a correctly labeled Data URI, and HTML, CSS and JavaScript snippets. Nothing is uploaded.

How to Use

Drag an image onto the drop zone, or click Choose File. PNG, JPG, WebP, GIF and SVG are supported.
The tool identifies the real format from the file's bytes and shows the detected MIME type, a preview and the dimensions.
Copy the plain Base64 or the Data URI — the MIME label in the Data URI always matches the detected format.
Use the HTML, CSS or JavaScript snippet if you are embedding the image in code.
Need a format-specific workflow, like PNG-only validation? Use the dedicated PNG to Base64 or JPG to Base64 tools.

Real Example

Drop a file called banner.jpg that is secretly a PNG, and the inspector says so: Detected Type: PNG, MIME: image/png — because the tool reads the file's magic bytes, not its extension. The Data URI output is then labeled data:image/png;base64,iVBORw0KGgo..., which is exactly what a browser needs to render it correctly. A WebP file is recognized by its RIFF....WEBP signature, a GIF by GIF87a or GIF89a, and an SVG by its XML content.

Code Snippets

// Encode any image as a Data URI (browser)
const dataUri = await new Promise(resolve => {
  const reader = new FileReader();
  reader.onload = () => resolve(reader.result);
  reader.readAsDataURL(file); // MIME label comes from the detected type
});

How Image to Base64 Works

The hardest part of "image to Base64" is not the encoding — it is knowing what you encoded. File extensions lie, and a Data URI with the wrong MIME type fails silently in some browsers. This tool inspects the leading bytes of the file (its magic numbers) to identify the real format, then labels the Data URI accordingly. SVG is the one text-based exception: it is detected from its XML markup rather than binary signatures. The encoding itself is the standard Base64 alphabet, byte-exact and fully reversible, so the image is never altered.

Common Use Cases

Embedding images of mixed formats into a single-file HTML page or email.
Building Data URIs for icons, placeholders and inline graphics in web apps.
Sending images through JSON APIs without multipart uploads.
Normalizing assets from different sources into one labeled, text-safe format.

FAQ

Which image formats does this tool support?

PNG, JPG / JPEG, WebP, GIF and SVG are supported in this first version, depending on what your browser can read. The detected format is always shown before you copy anything.

How does the tool detect my image format?

It reads the file's leading bytes — its magic numbers — rather than trusting the extension. A PNG renamed to .jpg is correctly reported as a PNG.

When should I use a Data URI instead of an image file?

Data URIs make sense for small images where saving an HTTP request matters, like icons in CSS or single-file demos. For large photos, a regular file is usually faster and cacheable.

Are SVG files handled differently from the other formats?

Yes. SVG is text-based XML, so it has no binary magic bytes; the tool detects it from its markup. It is still encoded as standard Base64 like any other file.