Convert JPG to PNG — Freeze the Quality
Already have a JPG and need to prevent further quality loss from repeated editing? Converting to PNG 'freezes' the current quality in a lossless format. Also useful when you need to add transparency to a JPG-sourced image.
Drop your JPG file here
or click to browse · up to 50 MB
Ctrl+Z undo · Ctrl+Y redo
Need batch upload, resize, watermark, or EXIF control? Full converter →
JPG vs PNG Comparison
| Feature | JPG | PNG |
|---|---|---|
| Full Name | Joint Photographic Experts Group | Portable Network Graphics |
| Lossy Compression | ✅ | ❌ |
| Lossless Compression | ❌ | ✅ |
| Transparency | ❌ | ✅ |
| Animation | ❌ | ❌ |
| Browser Support | All browsers, all devices | All browsers, all devices |
| Color Depth | 16.7M (24-bit) | 16.7M+ (24/32/48-bit) |
| Typical Use | Photos, web images, email attachments | Screenshots, graphics, logos, images needing transparency |
| Year Introduced | 1992 | 1996 |
Why Convert JPG to PNG?
Every time you edit and re-save a JPG, quality degrades slightly (generation loss). Converting to PNG stops this cycle. PNG is also required when you need to add transparency in an image editor, since JPG doesn't support alpha channels.
How to Convert JPG to PNG
Upload your JPG file.
KoalaPic converts to lossless PNG. The current JPG quality is preserved exactly.
Download your PNG. No further quality loss on future edits.
Quality Note
This conversion doesn't improve the JPG's quality — you can't recover data lost to JPG compression. But it prevents further loss. The PNG will be significantly larger than the JPG because it stores every pixel losslessly.