Image → Base64 Converter

The Image to Base64 converter is a free online tool that encodes images into Base64 data URI strings and decodes Base64 strings back into viewable images. Base64-encoded images can be embedded directly in HTML, CSS, and JSON without requiring separate image files or additional HTTP requests.

When you convert an image to Base64, the binary image data is transformed into a text string using the Base64 encoding scheme. The resulting data URI (e.g., data:image/png;base64,iVBOR...) can be used in <img> src attributes, CSS background-image properties, or any context where you need to embed image data inline.

This tool supports PNG, JPEG, GIF, WebP, SVG, and other common image formats. Files are processed entirely in your browser — nothing is uploaded to any server.

1. Upload or drag an image — Drop an image file onto the upload area or click to browse. Supports PNG, JPEG, GIF, WebP, SVG, and more.
2. Get the Base64 string — The tool instantly converts your image to a Base64-encoded data URI string.
3. Copy the result — Copy the full data URI for use in HTML img tags, CSS backgrounds, or JSON payloads.
4. Decode Base64 to image — Paste a Base64 string to preview and download the decoded image.

• Drag and drop — Simply drag an image file onto the tool to convert it instantly.
• Multiple formats — Supports PNG, JPEG, GIF, WebP, SVG, ICO, BMP, and TIFF images.
• Data URI output — Generates complete data URIs with correct MIME type, ready for HTML and CSS.
• Bidirectional conversion — Convert images to Base64 and decode Base64 strings back to images.
• File size display — Shows original file size and Base64 string size so you can assess the overhead.
• 100% client-side — Images are processed in your browser. Nothing is uploaded to any server.

• Inline images in HTML/CSS — Embed small icons, logos, and UI elements directly in your code to eliminate HTTP requests and speed up page loads.
• Email templates — Embed images in HTML emails to avoid broken image links when email clients block external images.
• API payloads — Include image data in JSON API requests and responses where binary file uploads aren't supported.
• Data URIs in stylesheets — Embed small background images and icons in CSS as data URIs to reduce server requests.
• Single-file applications — Bundle all assets including images into a single HTML file for offline use or easy distribution.