Base64 Image Encoder - Convert Images to Base64 Online

About This Tool

The Base64 Image Encoder converts your images into Base64 data URLs that you can paste directly into HTML, CSS, or JSON. It also works in reverse: paste any Base64 string to preview and download it as an image file. Everything runs locally in your browser, so your images are never uploaded anywhere.

Key Features

• Image to Base64: encode JPG, PNG, WebP, GIF, SVG, BMP, ICO, TIFF, AVIF, and HEIC files.
• Base64 to image: paste a Base64 string or data URL to preview and download the image.
• Batch encoding: process up to 20 images at once, 1 MB each.
• One-click copy: copy the full data URL or raw Base64 without the prefix.
• Download options: save encoded output as .txt, or decoded images as PNG, JPEG, and more.
• 100% private: all conversion happens on your device, nothing is uploaded.

How to Use

1. Choose Encode to turn images into Base64, or Decode to turn Base64 back into an image.
2. To encode: drag and drop your images into the zone, or click Browse files. Each file gets its own Base64 output with Copy and Download .txt buttons.
3. Tick the checkbox if you want raw Base64 without the data:image prefix when copying.
4. To decode: paste a Base64 string or full data URL, press Decode to Image, then preview and download the result.