JPG to PNG vs PNG to JPG
Converting JPG to PNG and PNG to JPG are opposite operations with opposite trade-offs. Going to PNG gives you lossless quality and transparency support but a bigger file. Going to JPG shrinks the file dramatically but discards transparency and adds compression.
Convert to PNG when you need transparency or want a lossless copy to edit without further quality loss. Convert to JPG when you need a much smaller file for a photo and do not need transparency.
JPG to PNG vs PNG to JPG: side-by-side comparison
| Attribute | JPG to PNG | PNG to JPG |
|---|---|---|
| Result format | PNG (lossless, transparent) | JPG (lossy, smaller) |
| File size change | Usually larger | Usually much smaller |
| Transparency | Gained (if source had it) | Lost (flattened to background) |
| Quality | No further loss | Lossy compression added |
| Best when | Need transparency or lossless edits | Need small photo file |
| Caution | Cannot restore JPG detail already lost | Transparent areas fill with color |
What is JPG to PNG and what is PNG to JPG?
JPG to PNG
JPG to PNG creates a lossless copy that supports transparency. It is useful when you need to edit without compounding JPG artifacts, or when a workflow requires PNG. Note it cannot recover detail the JPG already discarded — the PNG is simply a lossless container for the current pixels.
PNG to JPG
PNG to JPG flattens the image (removing any transparency, typically filling it white) and applies lossy compression to produce a much smaller file. It is ideal for turning large PNG photos or screenshots into lightweight, shareable images.
When to use which
Choose JPG to PNG
Convert JPG to PNG when you need transparency, a lossless working copy, or a format some tool specifically requires.
Choose PNG to JPG
Convert PNG to JPG when a PNG photo is too large and you do not need transparency — JPG will shrink it dramatically.
Convert between these formats
Use our free, browser-based converters: