Image to Base64

Convert images to Base64 strings. Generate data URLs for embedding in code.

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How to Use Image to Base64

Upload your image

Drag and drop or click to upload a PNG, JPG, WebP, or SVG image. The tool accepts any common image format.

View the Base64 output

The tool instantly encodes your image and displays the Base64 string along with the complete data URI including the MIME type prefix.

Copy and use

Click the copy button to grab the Base64 string or full data URI. Paste it directly into your HTML img tags, CSS background properties, or JavaScript code.

About Image to Base64

Image to Base64 converter online — encode any image as a Base64 string for free. Convert PNG, JPG, WebP, and SVG images to Base64 data URIs for embedding directly in HTML, CSS, JavaScript, or JSON. Eliminates extra HTTP requests by inlining images as text strings. Ideal for email templates, single-file HTML pages, CSS backgrounds, and small icons. See the encoded output size and copy the complete data URI with one click. No software needed — all encoding runs privately in your browser.

Key Features

Convert any image to Base64 encoded string for embedding directly in code
Generate ready-to-use data URIs for HTML img tags and CSS background properties
Support for PNG, JPG, WebP, GIF, and SVG image formats
One-click copy of Base64 output string or complete data URI with MIME type
Preview encoded output size and compare with original file size
100% private — all encoding happens in your browser, images never leave your device

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Frequently Asked Questions

How to convert an image to Base64 online?▾

Upload your image to our free converter and the Base64 encoded string is generated instantly. Copy the output with one click for use in your HTML, CSS, or code.

How to embed an image in HTML using Base64?▾

Convert your image to Base64, then use the data URI in an img tag: <img src="data:image/png;base64,..." />. This embeds the image directly in the HTML without requiring a separate file.

How to use Base64 images in CSS?▾

Convert your image to Base64 and use the data URI as a background-image value: background-image: url(data:image/png;base64,...). This inlines the image in your CSS file.

How to reduce HTTP requests with Base64 images?▾

Converting small images like icons and logos to Base64 data URIs eliminates separate HTTP requests, which can improve page load performance for sites with many small images.

How much larger is a Base64 encoded image?▾

Base64 encoding increases file size by approximately 33%. It is best suited for small images under 10KB like icons, logos, and thumbnails. Larger images should be served as regular files.

How to convert PNG to Base64 string?▾

Upload your PNG file and the tool instantly generates the Base64 encoded string with the correct data:image/png MIME type prefix, ready for use in HTML or CSS.

How to use Base64 images in email templates?▾

Convert images to Base64 and embed them as data URIs in your email HTML. This ensures images display without requiring external hosting, though some email clients may limit data URI support.

Is it safe to convert images to Base64 online?▾

Yes. All encoding happens entirely in your browser using JavaScript. Your images are never uploaded to any server, ensuring complete privacy.