pixelJPEG, PNG or WebP?
The best image format depends on what the picture contains and where it will be used. Start with the original file, export a copy, and compare the result at the size people will actually see.
Three formats, three useful starting points
| Format | Good starting point | Watch for |
|---|---|---|
| JPEG | Photographs and detailed scenes | No transparency; edges can show compression artifacts |
| PNG | Transparent graphics, diagrams and crisp edges | Detailed photographs can create large files |
| WebP | Web images where smaller size and transparency are useful | Check acceptance in the destination app or publishing system |
Use JPEG when the background is part of the picture
JPEG is a practical choice for a photograph with many shades and textures. It trades some image detail for a smaller file. A low setting may make sky gradients look uneven or introduce blocks around leaves and roof tiles. Keep the highest quality that gives a useful file size for your destination.
A transparent area needs a solid background when converted to JPEG. PixelDesk lets you choose that color explicitly. White works for a white document; another color may match your layout better. Check the preview around fine edges before downloading.
Use PNG for transparent artwork and sharp detail
PNG is useful for an illustration, screenshot or diagram where clean edges matter. Its lossless encoding preserves the pixels that the browser decoded into the canvas. Converting a heavily compressed JPEG to PNG will not bring back lost detail, and it often increases file size.
Try WebP for a website image
WebP can store transparency and is often useful for web delivery. PixelDesk uses the browser's WebP encoder, where available. File size depends on the picture and quality setting, so compare actual bytes rather than assuming every WebP will be smaller.
A useful comparison with the same source
Try the coastal sample in the image converter. Export JPEG, PNG and WebP, keeping its dimensions the same. Compare each file's size and inspect the small tram windows, foliage and sky. The useful choice is the one that retains the detail you need at an acceptable size.
Keep your original. Each new lossy JPEG or WebP export can change the pixels. Create final versions from the original rather than repeatedly converting a previously compressed copy.
What this converter supports
Still JPEG, PNG and WebP inputs are supported. GIF, animated WebP, animated PNG, SVG and HEIC are rejected rather than silently changing their behavior. The available output formats are checked against your browser's encoder.
Try it with the sample