FreeImage Converter
Convert an image
Between PNG, JPG, WebP and AVIF, in the browser.
Drop an image here, or .
Runs in your browser. Nothing is uploaded.
Questions
Which format should I choose?
WebP for the web, because it is smaller than both JPEG and PNG and every current browser reads it. JPEG when compatibility with older software matters. PNG when you need transparency or crisp flat graphics such as logos and screenshots. AVIF when size matters more than encoding speed.
Why did my transparency turn white?
JPEG has no alpha channel. When converting anything transparent to JPEG the transparent areas have to become a solid colour, and white is the conventional choice. Convert to PNG or WebP instead if the transparency matters.
Are my images uploaded anywhere?
No. Image Converter runs entirely inside your browser using the Canvas API. The file is read from your device, processed on your device, and the result is handed straight back to you. It never travels to a server, so there is nothing for us to store, log or leak.
Is it free, and is there a limit?
It is free with no account and no watermark. Because the work happens on your own hardware there is no per-image cost to us, so there is no quota. The only real limit is your device's memory: images beyond roughly 40 megapixels are refused rather than crashing the tab.
Does it work on a phone?
Yes. The tools work in any current mobile browser, and the result downloads to your camera roll or Files app like any other download. Very large images are slower on a phone than on a laptop because the processing is genuinely happening on the device.