WebP vs JPG vs PNG: Which Format Should You Use?
The short answer: WebP for the web, JPG for photos and email, PNG for transparency and lossless graphics. Here is the reasoning behind each choice.
By imgresizer.org · Apr 15, 2026 · 6 min read
Format comparison at a glance
| Feature | WebP | JPG | PNG |
|---|---|---|---|
| Lossy compression | ✓ | ✓ | ✗ |
| Lossless compression | ✓ | ✗ | ✓ |
| Transparency (alpha) | ✓ | ✗ | ✓ |
| Animation | ✓ | ✗ | APNG only |
| Browser support (2026) | 98% | 100% | 100% |
| File size vs JPG | 25-34% smaller | Baseline | 2-5× larger |
| Best for photos | ✓ best | ✓ good | ✗ too large |
| Best for logos/icons | ✓ | ✗ no transparency | ✓ |
| Email compatibility | ✗ poor | ✓ | ✓ |
JPG - the universal format
JPEG (JPG) has been the standard for photographs since 1992. It uses lossy compression tuned for natural images - the algorithm discards colour information that human vision is least sensitive to, producing small files that look near-identical to the original at quality 80+.
Use JPG for: photos, product images, anything going into email, anything that needs to work on every device without exception. JPG has 100% browser and app support - no modern software fails to open a JPG.
Avoid JPG for: logos, screenshots, and anything with flat colours or sharp text. JPG compression creates "blocking artifacts" on high-contrast edges that are very visible on text and geometric shapes.
PNG - lossless with transparency
PNG uses lossless compression - it can perfectly reconstruct every pixel of the original image. This makes PNG files larger than JPG for photos, but ideal for images where pixel-perfect accuracy matters: logos, icons, screenshots, and images with text.
Use PNG for: logos and icons (especially with transparent backgrounds), screenshots, graphics with text, images you will edit again (lossless means no quality degradation through multiple saves).
Avoid PNG for: photographs on the web. A typical photo that is 200 KB as a JPG is 1-2 MB as a PNG. There is no visible quality improvement that justifies the file size increase.
WebP - the modern web format
WebP was developed by Google and released in 2010. It supports both lossy and lossless compression, an alpha channel (transparency), and animation. The lossy mode produces files 25-34% smaller than JPG at the same visual quality. The lossless mode produces files 26% smaller than PNG.
As of 2026, WebP has 98% browser support. It works in Chrome, Firefox, Safari (since iOS 14 / macOS Big Sur), and Edge. The only remaining gap is very old browsers and some email clients.
Use WebP for: any image on a website where you control the HTML and want the smallest file size. It is the best choice for web performance. Use our Convert to WebP tool to switch formats instantly.
Avoid WebP for: email (email clients have poor WebP support), images shared on social media platforms that may not support it, and any context where you cannot be certain the viewer's software supports it.
The practical decision tree
- Does the image need transparency?Yes → WebP or PNG. No → continue.
- Is this for a website you control?Yes → use WebP. No → continue.
- Is this for email?Yes → JPG (photos) or PNG (logos). No → continue.
- Is this a photograph?Yes → JPG. No (logo, screenshot, graphic) → PNG.
Convert between formats