About This Tool

Image to Base64 Converter is a simple, easy-to-use online tool for converting between images and Base64. Upload an image to generate its Base64, or paste Base64 to restore it as an image for preview and download.

This tool is especially useful for frontend developers, for generating inline images, API data transfer, icon asset optimization and more. All operations run locally, keeping your data safe.

Features

Image to Base64

Upload images in various formats and generate a Base64 string in one click, with an optional data: prefix.

Base64 to Image

Paste Base64 to preview the decoded image instantly, with download support.

Format support

Supports JPG, PNG, GIF and other mainstream formats for conversion and preview, auto-detecting the image type.

Local processing

All conversions run locally in the browser — nothing is uploaded, ensuring data security and privacy.

Tips

Image-to-Base64 increases size by ~33%, ideal for small icons and inline resources
Include the data: prefix to use it directly in HTML/CSS/JSON; backends can strip it
If pasting Base64 without a prefix, it defaults to image/png; you can add one yourself
Copy the result for API debugging, inline testing and cache optimization