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

Save a photo as the wrong format and you either get a bloated file or a blurry mess. The three formats you'll meet everywhere — JPG, PNG, and WebP — each have a job they're best at. Once you know the trade-offs, the choice takes two seconds.

JPG — the photo workhorse

JPG uses lossy compression tuned for photographs: smooth gradients, skin tones, and natural textures compress beautifully, often 10x smaller than the raw pixels. The price is generation loss — every re-save as JPG discards a little more detail — and no transparency support. Use JPG for: photos, camera images, and anywhere file size matters more than pixel-perfection.

PNG — the pixel-perfect choice

PNG is lossless: every pixel is preserved exactly, and it supports full transparency (alpha channel). That precision costs file size — a PNG photo can be 5–10x bigger than the same image as JPG. Use PNG for: logos, icons, screenshots, graphics with text or sharp edges, and anything needing transparency.

WebP — the modern all-rounder

WebP does both jobs: lossy compression 25–35% smaller than JPG at similar quality, plus lossless mode and transparency like PNG. It was created by Google and is now supported by all modern browsers, phones, and image editors. Use WebP for: web images of any kind — it's the best default choice today when compatibility isn't a concern.

Quick decision guide

• Photo for web or email? → WebP (or JPG for maximum compatibility).
• Logo, icon, or screenshot? → PNG (or WebP lossless).
• Needs a transparent background? → PNG or WebP (never JPG).
• Smallest possible file? → WebP, then optimize with the Image Compressor.
• Sending to someone with old software? → JPG for photos, PNG for graphics — the universally safe pair.

How to convert between formats

1. Open the Image Format Converter (free, runs in your browser).
2. Choose your image and pick the target format — JPG, PNG, or WebP.
3. For JPG/WebP, set a quality level (80 is a great default); PNG ignores quality since it's lossless.
4. Download the converted file. That's it — no signup, no upload.

Frequently asked questions

Which format has the smallest file size?
Usually WebP. For photos it's roughly a quarter to a third smaller than JPG at the same visual quality; for graphics it beats PNG too.

Does PNG support transparency?
Yes — full alpha transparency, which is why it's the standard for logos and overlays. WebP also supports it; JPG never does.

Is WebP supported everywhere now?
All modern browsers (Chrome, Firefox, Safari, Edge), Android, and iOS support it. Very old software (pre-2020) may not — use JPG/PNG when in doubt about the recipient.

Should I convert all my PNGs to WebP?
For web use, usually yes — you'll save significant bandwidth. Keep PNG masters for editing, since repeated lossy saves degrade quality.

Related tools: Image Format Converter · Image Compressor · Image Resizer