Optimising a website
Moving images to WebP noticeably reduces page weight, and every current browser displays it without trouble.
Convert image
Convert between JPG, PNG and WebP.
🔒 This file is processed in your browser. It is never uploaded anywhere.
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What it is for
Converting an image format changes the way its pixels are stored. Each format is a different compromise between size, quality and capability, and picking the right one has practical consequences for what you can do with the image afterwards.
JPG compresses heavily but loses information and cannot hold transparent areas. PNG preserves every pixel exactly and does support transparency, at the cost of considerably larger files. WebP is the modern format offering the best of both: smaller than JPG at similar quality, with transparency like PNG.
Conversion is most useful when something refuses the format you have, or when you want another format’s advantages. Turning PNG screenshots into WebP for a website, for instance, usually halves the size with no visible difference.
How it works
- Upload the image you want to convert to another format.
- Choose the output format: JPG, PNG or WebP.
- Click "Process" and download the converted image.
When to use it
Compatibility
Some older programs and certain forms accept only JPG. Converting solves the rejection without remaking the image.
Preserving transparency
Logos and icons need a transparent background: PNG and WebP keep it, JPG does not.
Practical tips
- Converting to JPG fills transparent areas with white. If the logo was meant for a dark background, it will show.
- Converting JPG to PNG recovers no quality: what was lost in compression is gone, and the file merely gets bigger.
- For photographs, WebP and JPG outperform PNG. For screenshots, drawings and text, PNG and WebP keep edges clean.
- If you will keep editing the image, work in PNG and convert to JPG or WebP only as the final step.
Frequently asked questions
Which format should I choose?
WebP usually gives the smallest size while keeping good quality and is supported by all modern browsers; use PNG if you need transparency and JPG for maximum compatibility.
What happens to transparency when converting to JPG?
JPG does not support transparency, so transparent areas are automatically filled with white.