To convert PNG to WebP, run `npx optimo image.png --format webp`. WebP can be significantly smaller than PNG while preserving quality. Optimo handles format conversion and optimization in a single step.

## Command

Convert a file by targeting the output format:

```
npx optimo image.png --format webp
```

Tip: add `--dry-run` to preview changes.

## Why convert?

- WebP can be significantly smaller than PNG while preserving quality.
- Great for web delivery when you don’t need a pure lossless PNG.

## Format notes

**PNG**  
Lossless image format with sharp edges and great support for transparency.

[Optimize PNG](/content/optimize/png/index.html) [Compress PNG](/content/compress/png/index.html) [Resize PNG](/content/resize/png/index.html) [PNG guide](/content/formats/png/index.html)

**WebP**  
Modern image format with great compression and broad browser support.

[Optimize WebP](/content/optimize/webp/index.html) [Compress WebP](/content/compress/webp/index.html) [Resize WebP](/content/resize/webp/index.html) [WebP guide](/content/formats/webp/index.html)

## Not sure which to use?

If you're choosing a delivery format, here's a quick comparison.

[PNG vs WebP](/content/compare/png-vs-webp/index.html)