Image Base64 Encoder/Decoder

What is Base64 Image Encoding?

Base64 encoding converts binary image data into an ASCII string. The encoded data can be embedded directly in HTML, CSS, or JSON without additional file requests. This tool supports bidirectional conversion between images and Base64, all processing is done locally in your browser.

Features

• Convert images to Base64 and decode Base64 back to images
• Batch upload multiple images for encoding
• Output both pure Base64 and Data URI formats
• Support 9 image formats: PNG, JPG, GIF, WebP, BMP, SVG, ICO, TIFF, AVIF
• Auto-detect data URI prefix and image format
• Browser-only processing, no server upload, privacy protected
• One-click copy for easy code embedding

How to Use

1. 1Select the Encode tab, drag & drop or click to upload images
2. 2The system automatically converts images to Base64, showing both pure text and Data URI
3. 3Click Copy to copy the encoded result in your preferred format
4. 4Select the Decode tab, paste a Base64 string or Data URI
5. 5Click Decode to preview and download the decoded image