Image to Base64

About This Tool

The Image to Base64 Converter encodes any image file into a Base64 string or a complete Data URI, allowing you to embed images directly into HTML, CSS, or JSON without hosting them as separate files. It supports drag-and-drop or click-to-select input and shows the original file size versus the encoded size.

All encoding is done in your browser using the FileReader API — your image is never uploaded to any server. The output can be toggled between a full Data URI (with the data:image/…;base64, prefix) and raw Base64-only output.

How to Use

1. Drag and drop an image onto the upload area, or click it to open a file picker.
2. The encoded output appears automatically after the file is loaded.
3. Toggle between Data URI and Base64 Only using the buttons.
4. Click Copy to copy the result to your clipboard.

Data URI vs Base64 Only

Data URI: data:image/png;base64,iVBOR… — complete string usable directly in HTML img src, CSS background-image, or SVG href. Base64 Only: iVBOR… — raw encoded content without the prefix. Use when an API, database field, or config file expects only the raw Base64 data.

Use Cases

Frontend developers embed small icons and logos directly in CSS or HTML to eliminate HTTP requests. Email marketers inline images in HTML email templates since many email clients block external image loading. Mobile app developers encode images for JSON API payloads. Developers store images in configuration files or databases that accept Base64 strings.

FAQ

• Does Base64 encoding increase file size? — Yes. Base64 encoding increases file size by approximately 33% compared to the original binary.
• Which image formats are supported? — Any format your browser can display: JPG, PNG, WebP, GIF, SVG, BMP, and more.
• Should I Base64-encode large images? — For files over ~10 KB, it is usually better to host the image as a file. Large Base64 strings bloat HTML/CSS and hurt page load performance.