100% Free · Private · No sign-up

Image to Base64 Converter

100% free — convert any JPG, PNG or WebP image to a Base64 data URI instantly. Copy the raw string, an HTML <img> tag, CSS background-image or JavaScript variable — perfect for developers embedding images inline. Nothing leaves your browser.

Drop an image here

or click to browse

JPG, PNG & WebP · paste with Ctrl+V / ⌘V
Uploaded image preview
Three simple steps

How to convert an image to Base64

Upload once, copy the format you need — ideal for HTML emails, inline CSS and small assets.

  1. 1

    Upload your image

    Drag and drop, browse, or paste an image from your clipboard.

  2. 2

    View the encoded output

    The tool generates a Base64 data URI plus HTML, CSS and JS snippets.

  3. 3

    Copy and use

    Click Copy on the format you need and paste it into your project.

Everything you need

Base64 encoding built for developers

Every output format you need — from raw data URIs to paste-ready code snippets.

Data URI output

Full Base64 data URI string ready for inline embedding anywhere.

HTML snippet

Pre-built img tag with the encoded src attribute — paste into HTML or email.

CSS snippet

background-image declaration with the data URI — drop into stylesheets.

JavaScript snippet

Const variable assignment for use in scripts and frameworks.

100% private

Encoding happens locally — your images are never uploaded.

Instant & free

No sign-up, no limits — encode as many images as you need.

Convert images to Base64 online — free data URI generator

Developers often need to embed images directly in HTML, CSS or JavaScript without hosting separate files. A Base64 data URI encodes the image as a text string you can paste anywhere. This free image to Base64 converter reads your file locally and outputs the data URI plus ready-made snippets for HTML <img> tags, CSS background-image and JavaScript variables.

Base64 is ideal for small icons in HTML emails (where external images are blocked), inline SVG replacements, and reducing HTTP requests for tiny assets. For large photos, regular image files are more efficient — Base64 adds roughly 33% overhead. This tool shows the encoded size so you can decide.

Everything runs in your browser on Uzetool — explore more developer tools.

Questions

Frequently asked questions

How do I convert an image to Base64?

Upload your image to this tool. It reads the file locally and displays the Base64 data URI plus HTML, CSS and JavaScript snippets. Click Copy on the format you need.

What is a Base64 data URI?

A data URI embeds file content directly in a URL string (data:image/png;base64,...). It lets you inline small images in HTML, CSS or JavaScript without separate image files.

Is this Base64 converter free?

Yes — 100% free with no sign-up or usage limits.

Are my images uploaded to a server?

No. FileReader reads your image locally in the browser. Nothing is sent to any server.

Which image formats are supported?

JPG, PNG and WebP images are supported. The output data URI preserves the original MIME type.

When should I use Base64 for images?

Base64 works well for tiny icons, HTML emails and reducing HTTP requests for small assets. For large photos, use regular image files instead — Base64 increases file size by about 33%.