Image to Base64 Converter Online Free

Convert images to Base64 encoded strings for embedding in HTML, CSS, or JSON. Also decode Base64 strings back to downloadable images.

🔒Your images never leave your device. All processing happens in your browser.

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Drop your image here

or click to browse — JPG, PNG, WebP, AVIF

Supports: JPG, PNG, WebP, AVIF

How to Convert Image to Base64

1. Upload an image — Drag and drop or click to select a JPG, PNG, WebP, or AVIF file.
2. Get Base64 string — The tool instantly generates the Base64 encoded string and data URI.
3. Copy to clipboard — Click the copy button to copy the full data URI or raw Base64 string.
4. Decode Base64 — Switch to decode mode, paste a Base64 string, and download the resulting image.

When to Use Base64 Images

Base64 encoding is useful for embedding small images directly in HTML, CSS, or JSON without separate HTTP requests. It is ideal for icons, small logos, and email templates. However, Base64 increases file size by approximately 33%, so it is not recommended for large images. For images under 10KB, Base64 embedding can improve page load performance by reducing the number of HTTP requests.