Choosing the right image format is one of the easiest performance wins on the web. The Image Format Converter lets you switch any image between PNG, JPG and WebP, tune the quality, and see the resulting file size before you download.
Which format should you use?
- JPG — photographs and complex imagery where small file size matters
- PNG — graphics with transparency, sharp edges, or text
- WebP — a modern format that usually beats both on size at the same quality
Lossy vs lossless
PNG is lossless: it preserves every pixel exactly, which is why the quality slider does not apply to it. JPG and WebP are lossy: they discard information the eye is unlikely to notice in exchange for much smaller files. The quality slider controls how aggressive that trade-off is.
Converting an image from one format to another
- Drag in or select an image.
- Choose the output format: PNG, JPG or WebP.
- Adjust the quality slider for JPG or WebP and watch the size update.
- Download the converted file.
Use WebP for the web, JPG for broad compatibility, and PNG when you need transparency or pixel-perfect graphics.
Converting without throwing away quality
An honest conversion keeps as much of the source pixels as the target format allows. Converting JPG to PNG gains transparency support but never recovers the detail JPG already threw away — the file just gets bigger. Converting PNG to JPG is the lossy step: transparent regions must be flattened onto a background color first, or they come out black on older viewers. Pick the background, then convert, and check the result at 100 percent rather than at thumbnail size.
- JPG → WebP: usually smaller at equal quality; great for photos.
- PNG → WebP: keeps sharp edges small; ideal for graphics.
- Anything → PNG: largest, but lossless and universally compatible.
Convert in bulk when you can: converting a whole folder to WebP in one pass, then eyeballing a few results, beats reporting a format-by-format workflow. Keep the source folder intact so a bad conversion is a re-run, not a recovery.
