Encode

Image to Base64 Converter

Drop an image, browse, or paste from your clipboard. Get a clean Base64 string or ready-to-use data URI back instantly — nothing is uploaded.

1. Add your image

Local only

Drop an image here

or click to browse · or paste with Ctrl/Cmd + V

PNG · JPG · WEBP · GIF · BMP · ICO · SVG · AVIF · TIFF

2. Copy the output

Shortcuts: Ctrl/Cmd + V paste image · Ctrl/Cmd + C copy when output is focused.

About this tool

About Image to Base64

This converter turns an image into a Base64 data URI you can paste directly into HTML, CSS, or JSON. It suits front-end developers inlining small icons, email designers embedding images without external hosting, and anyone who needs an image as text.

Inlining an image as a data URI removes a separate HTTP request and keeps the asset self-contained. Doing it in the browser means the image — which may be unreleased or private — is never uploaded anywhere.

How to use

Step by step

  1. Drag an image onto the drop zone, or click to choose a file from your device.
  2. A preview appears so you can confirm you selected the right image.
  3. The encoded data URI is generated automatically below the preview.
  4. Choose whether you want the raw Base64 or a full data: URI with the MIME prefix.
  5. Copy the result, or download it as a text file to drop into your project.
Key features

What it offers

  • Drop, browse, or paste input
  • Base64 and data-URI output
  • Ready-to-use snippets
  • Encoded on your device
Best practices

Tips for best results

  • Inline only small images — data URIs add roughly a third to the original size and bloat HTML if overused.
  • For icons used across many pages, a sprite or icon font is usually lighter than repeated data URIs.
  • Keep large photos as normal linked files; data URIs are best for tiny, frequently-inlined assets.
Benefits

Why people use it

No hosting needed

Embed the image directly in markup instead of uploading it somewhere first.

Fully private

Encoding happens on your device; the image is never sent to a server.

Correct MIME

The data URI is built with the right media type so it renders everywhere.

Copy or download

Take the result as clipboard text or a saved file, whichever fits your workflow.

FAQ

Common questions

Drag an image into the drop area, click to browse, or paste one from your clipboard. The tool reads it locally and shows the Base64 string and a full data URI you can copy or download.
No. The conversion uses the browser FileReader API, so the image is read on your device and never sent anywhere.
PNG, JPG/JPEG, WebP, GIF, BMP, ICO, SVG, and AVIF are supported. TIFF works where the browser can read it. Any file you select is encoded regardless of type.
The Base64 is the raw encoded payload. The data URI adds the data:[mime];base64, prefix so you can paste it straight into HTML or CSS.
Base64 encodes three bytes as four characters, so the output is about 33% larger than the original file. That overhead is expected.
Private by design

This runs entirely in your browser

No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.

Install Toolisco Add it to your device for offline, one-tap access.