JPG vs PNG: Which image format should you actually use?

If you've ever right-clicked an image and wondered whether to save it as a JPG or a PNG, you're not alone. The two formats look nearly identical at first glance, but underneath they make very different trade-offs — and choosing the wrong one can mean either a bloated file or a blurry one.

The 30-second answer

Use JPG for photographs and complex scenes with lots of color gradients. Use PNG for screenshots, logos, icons, illustrations, and anything that needs transparency or pin-sharp edges.

How JPG works

JPG (technically JPEG) uses lossy compression. That means it throws away visual information your eye is unlikely to notice in exchange for dramatically smaller files. A 24-megapixel photo that would be 70 MB as raw data fits comfortably in 4 MB as a JPG — and looks essentially identical.

The catch? Every time you save a JPG, it loses a little more quality. Edit and re-save a JPG ten times and you'll see noticeable artifacts around sharp edges.

How PNG works

PNG uses lossless compression. The file is smaller than raw pixel data but every pixel is preserved exactly. You can re-save a PNG a thousand times and it will be bit-for-bit identical to the original.

PNG also supports transparency (alpha channels), which JPG does not. That's why every logo on the web — your favorite app icon, your company's wordmark — is almost certainly a PNG or an SVG, never a JPG.

Real-world scenarios

• Wedding photo for Instagram → JPG (small file, photo content)
• App screenshot for a portfolio → PNG (sharp text, no quality loss)
• Company logo for your website → PNG (needs transparency)
• Product photo for an e-commerce listing → JPG (photo, file size matters)
• Chart or infographic → PNG (crisp lines, flat color)
• Phone wallpaper → either, but PNG if you want maximum quality

When converting JPG → PNG makes sense

You can't recover detail that's already been thrown away by JPG compression. So why convert? Because once it's a PNG, no further saves will degrade it. If you're editing a JPG and plan to re-export it many times, your first move should be to convert it to PNG and edit from there.

Other reasons: you need transparency added later in an editor, you're handing the file to a designer, or you're archiving an image and don't want any more quality loss.

Try it now

Pixnova's converter does this in your browser in under a second, with zero uploads. Drop in your JPG and you'll have a PNG ready to download instantly.