Image to Base64

Encode any image (JPG, PNG, GIF) directly into a Base64 string for embedding in HTML/CSS.

Home Image to Base64
The Image to Base64 encoder converts your image file into a Base64 data URI string. This is crucial for embedding small images directly into HTML or CSS files, reducing HTTP requests, and improving page load performance. Convert image to Base64 now!
⬆️

Drag and drop your image here or click to browse

Maximum file size: 5MB
Supports PNG, JPG, JPEG, WebP, GIF and SVG
✨ Select multiple files for batch conversion!
💡 Tip: You can also paste images directly from your clipboard! Just press Ctrl+V (or Cmd+V on Mac) to convert screenshots instantly.
  1. 1 Upload Image: Select a small image file (JPG or PNG) you wish to encode.
  2. 2 Encode: Click "Convert to Base64 String".
  3. 3 Copy Data URI: The output is a single, long Base64 data URI string, which you can paste directly into CSS or HTML attributes.

Why would I convert an image to Base64?

To embed the image directly into the web page's source code (HTML/CSS), eliminating the need for an external HTTP request, which can speed up page loading for small, critical images (like logos or icons).

Is it good practice to encode large images this way?

No. Base64 encoding increases file size by ~33%. It should only be used for very small, critical images (under 5KB) to maximize the performance benefit.

How does this help with Core Web Vitals (LCP)?

Embedding a critical image's data directly via Base64 can prevent render-blocking and significantly improve the Largest Contentful Paint (LCP) metric.

CSS Embedding

Example Keyword: base64 encode image for CSS
Embed small icons or backgrounds directly into CSS files to reduce server requests.

Critical CSS

Example Keyword: encode logo for fast loading
Use the data URI for the logo in critical CSS to ensure it loads immediately on a fast network.

Email Signature

Example Keyword: base64 image for email signature
Embed a logo into an email signature so it displays reliably across most clients.

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