JPG vs PNG vs WebP vs AVIF
The right format can halve your file size for the same quality. Here is when to use each — photos, screenshots, logos and icons.
Quick comparison
| Format | Best for | Transparency | Compression |
|---|---|---|---|
| JPEG | Photos | No | Lossy |
| PNG | Screenshots, logos | Yes | Lossless |
| WebP | Everything modern | Yes | Lossy + lossless |
| AVIF | Best compression | Yes | Lossy + lossless |
| SVG | Icons, logos | Vector | — |
Convert between formats with the free image converter.
JPEG
The classic photo format. Small files for photographic content, but no transparency and visible artifacts at low quality. Use quality 75–85.
PNG
Lossless and supports transparency. Ideal for screenshots, UI elements, logos and anything with sharp edges or text. Large for photos — do not use PNG for those.
WebP
Google's modern format, supported by every current browser. Roughly 25–35% smaller than JPEG at similar quality, with transparency and animation. A great default for the web.
AVIF
The best compression ratios today — often 50% smaller than JPEG — with transparency and HDR. Encoding is slower and support, while broad, is newer. Perfect with a WebP/JPEG fallback.
SVG
Vector graphics defined by code: infinitely scalable, tiny for logos and icons, and styleable with CSS. Not for photos.
How to choose
- Photo on a website → WebP (AVIF with fallback).
- Screenshot/UI → PNG or WebP lossless.
- Logo/icon → SVG.
- Email → JPEG/PNG (email clients lag on WebP).
- Print → keep high-quality JPEG/TIFF.
Conversion tips
- Convert before optimising to avoid double compression.
- Keep a fallback via
<picture>for AVIF. - Do not convert a low-quality JPEG to PNG expecting to fix it — quality lost is lost.
Convert for free
Use the converter for batch format changes — JPG↔PNG↔WebP↔AVIF — all in your browser, nothing uploaded.