Image Tools

Base64 Image Converter

Convert an image to a Base64 data URI, or decode a Base64 string back into a viewable image — entirely offline.

Upload an image

Click, press Enter, or drag an image here

Stays on your device — never uploaded

Preview of the selected image
Paste a Base64 string or data URI
Decoded image preview
Base64-encoded images are roughly 33% larger than their binary source and aren't cached separately by the browser — great for tiny icons or inline SVG, not ideal for large photos.

Part of One File Tools. All conversion happens in your browser.