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

You save an image and your computer asks for a format, or a website tells you it only accepts certain ones, and you are left guessing. PNG, JPG, and WebP are the three you actually run into, and picking the right one changes how good your image looks and how heavy the file is. Here is the plain-English version of when to use each.

The one-line summary

If you only remember three rules, remember these:

• JPG for photographs.
• PNG for graphics with text, sharp edges, or transparency.
• WebP when you want the smallest file for the web and you do not need maximum compatibility.

Everything below is just the reasoning behind those three lines.

JPG: built for photographs

JPG (also written JPEG) uses “lossy” compression, which throws away detail the eye barely notices to make the file dramatically smaller. For photographs, full of subtle gradients and millions of colors, this works beautifully: a JPG can be a fraction of the size with no visible loss.

Where JPG struggles is sharp edges and flat color. Text, logos, and screenshots saved as JPG often look fuzzy, with faint smudges around the crisp parts. JPG also cannot do transparency. So: photos yes, graphics no.

PNG: built for graphics and transparency

PNG uses “lossless” compression, meaning it keeps every pixel exactly. That makes it perfect for the things JPG handles badly:

• Logos, icons, and illustrations with hard edges.
• Screenshots where text must stay crisp.
• Anything with transparency, since PNG supports a see-through background.

The tradeoff is size. A photograph saved as PNG can be several times larger than the same photo as JPG, with no visible benefit. So use PNG for graphics, not for photos.

WebP: the modern all-rounder

WebP is a newer format from Google that aims to do both jobs, lossy like JPG or lossless like PNG, while producing noticeably smaller files than either. It also supports transparency and even animation.

For a website, WebP is often the best choice: smaller pages load faster and rank better. The only real catch is compatibility. Support is very wide now, but a few older programs and workflows still do not accept WebP, so for a file you are emailing or handing to someone, a JPG or PNG is the safer bet.

A quick decision guide

• Putting a photo on a website? WebP first, JPG as the safe fallback.
• Sharing a photo by email or with a person? JPG.
• Saving a logo, icon, or screenshot? PNG (or WebP if it is for the web).
• Need transparency? PNG or WebP, never JPG.
• Worried about compatibility above all? JPG for photos, PNG for graphics.

How to switch between formats

You rarely have to re-export from the original. The free Image Format Converter turns an image from one format into another in seconds, right in your browser, so the file is never uploaded to a server.

If the result is still heavier than you want, run it through the Image Compressor to cut the size further, or the Image Resizer if the dimensions are larger than you need. And if you are starting from a vector logo, SVG to PNG gives you a crisp raster version at any size.

The bottom line

There is no single best format, only the best one for the job. Photos want JPG (or WebP on the web). Graphics and anything transparent want PNG. And when the web speed matters most, WebP usually wins. When you guess wrong, converting is quick and free, so it is an easy mistake to fix.