PNG vs JPG vs WebP: Which Image Format Should You Actually Use?

If you've ever saved an image and been confronted with a dropdown of format options, you know the vague anxiety of picking the wrong one. Here's the short version, followed by the slightly longer version for when it actually matters.

The one-line answer

• Photos → JPG
• Logos, screenshots, graphics with text or transparency → PNG
• Anything going on a website, if you can → WebP

JPG: built for photos

JPG uses "lossy" compression — it throws away some detail to keep file sizes small, betting that your eye won't notice in a photograph full of gradients and natural detail. This works great for photos and terribly for anything with sharp edges or flat colors (like text or logos), where it introduces visible fuzzy artifacts around the edges. JPG also has no transparency support — a "transparent" JPG isn't a real thing.

PNG: built for precision

PNG is "lossless" — every pixel is preserved exactly. That makes it the right call for screenshots, logos, diagrams, and anything with text in the image, where JPG's compression would blur sharp edges. PNG also supports true transparency, which is why it's the standard format for things like a transparent signature or a logo you'll place over different backgrounds. The tradeoff is file size — a PNG photo can be 5-10x larger than the same photo as a JPG.

WebP: the modern all-rounder

WebP is a newer format (created by Google) that generally beats both — smaller than JPG at equivalent photo quality, and it supports transparency like PNG. Nearly every modern browser supports it now. The only real reason to avoid it is compatibility with older software that expects a classic JPG or PNG file specifically (some older desktop apps, some printers, some legacy systems).

Converting between them

If you've got a file in the wrong format — a PNG that should be a much smaller JPG before you email it, or a JPG you want to turn into a WebP for a website — our Convert Image Format tool handles all three directions instantly, right in your browser. One thing worth knowing: converting a transparent PNG to JPG will fill the transparent areas with white, since JPG can't represent transparency at all.

Think about the image, not just the extension

The best format depends on what the pixels contain. A photograph has thousands of subtle color changes and usually benefits from a compact lossy format. A screenshot with text has sharp edges and repeated colors, so preserving exact edges is more important. Transparency adds another requirement because the file must be able to store an alpha channel.

When JPG is the practical choice

Use JPG when broad compatibility and a small photographic file are more important than perfect pixel preservation. Repeatedly saving an already compressed JPG can accumulate artifacts, so keep a higher-quality original when the image will be edited several times.

When PNG makes more sense

PNG is particularly useful for screenshots, diagrams, interface captures, logos, and transparent graphics. It is not automatically “higher quality” for every use; it simply preserves pixel information differently and can be much larger for photographs.

When WebP is a good web choice

WebP can provide a strong size-to-quality balance for modern websites and supports transparency. Before choosing it for a workflow, check whether the application receiving the file accepts WebP. Keeping the original source is still sensible when compatibility matters.

A simple decision rule

• Photo → JPG or WebP.
• Screenshot, logo, diagram → PNG.
• Transparent web graphic → PNG or WebP.
• Maximum legacy compatibility → JPG or PNG.