How to Convert JPG to PNG (and Why You'd Want To)
JPG to PNG is the single most common image conversion people search for, and for good reason — the two formats are built for opposite jobs, and knowing when to move between them saves a lot of guesswork. Here's what actually changes when you convert, and when it's worth doing.
The core difference: lossy vs lossless
JPG is a lossy format — every time it's saved, it throws away some visual detail the eye is unlikely to notice, trading quality for a much smaller file. That's why a phone camera defaults to it: full-resolution photos would otherwise eat storage fast. PNG takes the opposite approach. It compresses losslessly, meaning every pixel you started with is exactly the same after saving, at the cost of a larger file. Converting a JPG to PNG copies the pixels over faithfully, but it can't restore detail the JPG already discarded when it was first saved — that loss happened at the source, not during conversion.
JPG vs PNG at a glance
| Feature | JPG / JPEG | PNG |
|---|---|---|
| Transparency | No | Yes (alpha channel) |
| Compression | Lossy | Lossless |
| Typical file size | Small | Larger |
| Best for | Photos, complex color | Logos, screenshots, text |
When to actually convert
Convert to PNG when you need a transparent background, when the image has sharp edges or flat colors — logos, screenshots, icons, text overlays — or when it's headed for several more rounds of editing before it's final. Stick with JPG when the file is a finished photo going to the web or social media, where a smaller size matters more than pixel-perfect preservation.
Converting in your browser
The JPG to PNG converter on this site does the whole job locally — drop a file in, and it re-encodes it as PNG using your browser's own Canvas API, with nothing uploaded to a server. Once you have a PNG, a natural next step is often compressing it if the new file is larger than you'd like, or resizing it to fit a specific use case.