WebP vs JPG vs PNG: Which Format Should You Use?
Quick reference
| Feature | JPG | PNG | WebP |
|---|---|---|---|
| Compression | Lossy | Lossless | Lossy or lossless |
| Transparency | No | Yes | Yes |
| Animation | No | No (limited) | Yes |
| Best for | Photographs | Graphics, logos, screenshots | Web images (any type) |
| File size | Small | Large | Smallest |
| Compatibility | Universal | Universal | All modern browsers |
| Upload form support | Universal | Widely accepted | Often rejected by forms |
JPG (JPEG)
JPG is the oldest of the three and the most universally supported format on the web. It uses lossy compression — some image data is discarded during compression — which produces small file sizes but introduces visible degradation (called “artifacts”) at very high compression levels.
Use JPG for:
- Photographs and images with complex colour gradients
- Upload forms, government portals, and any application requiring a “JPG photo”
- Email attachments and general file sharing
Do not use JPG for: logos, icons, screenshots with text, or any image where you need a transparent background. JPG does not support transparency.
PNG
PNG uses lossless compression — every pixel is preserved exactly. This makes PNG ideal for images where quality cannot be compromised, and for images that require transparency (the “alpha channel”). The trade-off is file size: PNG files are significantly larger than their JPG equivalents for the same photograph.
Use PNG for:
- Logos and icons that need a transparent background
- Screenshots, especially those containing text
- Graphics, diagrams, and flat-colour illustrations
Do not use PNG for: photographs. A photo saved as PNG can easily be 5–10x larger than the same photo saved as a good-quality JPG with no perceptible visual difference.
WebP
WebP was developed by Google and released in 2010. It supports both lossy and lossless compression, transparency, and animation — making it a technically superior replacement for both JPG and PNG. WebP files are typically 25–35% smaller than equivalent JPG files at the same visual quality.
Use WebP for:
- Images served on websites where file size affects page load speed
- Any web image that would otherwise be a JPG or PNG
Why you might still need to convert WebP:
- Older desktop applications (some versions of Photoshop, older Windows tools) cannot open WebP
- Upload forms — most accept JPG and PNG, but many still reject WebP
- Printing services typically do not accept WebP input
When you encounter a WebP and need to convert it
Websites serve WebP automatically to browsers that support it, which means you might download a “.webp” file when saving an image from a webpage. If you need a standard format:
- Convert to JPG for general use or uploading to forms: WebP to JPG
- Convert to PNG to preserve transparency: WebP to PNG
Which format is right for you?
For a photograph going into an upload form: JPG.
For a logo or icon that needs to sit on a transparent background: PNG.
For a website image where you control the serving format: WebP — and fall back to JPG or PNG for forms.