Converting an image format is often the easiest way to shrink a file or make it work where it currently does not. The trick is knowing which target format to pick.
The formats you will actually use
- JPG: photos, maximum compatibility, no transparency.
- PNG: graphics, screenshots, anything needing a transparent background.
- WebP: the modern default, smaller than JPG at the same quality, supports transparency.
- AVIF: even smaller than WebP, great for images you encode once and serve often.
How to convert an image
- Open the Universal Image Converter.
- Add your file.
- Choose the output format and quality.
- Download the converted image.
Common conversions and why
- PNG to JPG or WebP: when a photo is needlessly stored as PNG and you want a much smaller file.
- HEIC to JPG: iPhone photos that will not open on other devices. Use the dedicated HEIC to JPG tool.
- JPG to PNG: when you need a lossless copy to edit, or transparency.
Convert many files together
For a folder of mixed formats, the Batch Image Converter handles the whole set at once. Everything runs in the browser, so files stay private.
Frequently asked questions
What is the best image format for the web?
WebP is the best default for photos and graphics on the web. JPG is a safe fallback, and AVIF gives the smallest files where you can use it.
How do I convert PNG to JPG?
Open the Universal Image Converter, add the PNG, choose JPG as the output, and download. Note that JPG does not support transparency.
Does converting an image lose quality?
Converting to a lossless format like PNG keeps everything. Converting to a lossy format like JPG or WebP can lose a little, but at quality 80 it is usually invisible.