Optimizing WebP Images

To optimize WebP images, run npx optimo image.webp. Optimo applies format-specific ImageMagick-powered compression that typically reduces WebP file size by 15–40% without visible quality loss. The original file is kept if the output is not smaller.

Command

Start here. Run optimo on an image file:

npx optimo image.webp

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

When to use WebP

  • web images
  • thumbnails
  • mixed photo + graphics

Trade-offs

  • Not universally supported by legacy tooling

Related formats

PNG
Lossless image format with sharp edges and great support for transparency.
JPEG
The classic photo format: widely supported, good quality-to-size for photographs.
AVIF
High-compression modern image format that can beat WebP on size at similar quality.
HEIC
A common camera output format (especially Apple devices) with efficient compression.
JPEG XL
Next-gen image format designed for high quality and efficient compression.
GIF
Legacy animated image format that is still widely used for simple loops.
SVG
Vector format: crisp at any size and excellent for icons and illustrations.

Related conversions

Convert HEIC to WebP
Convert PNG to WebP
Convert JPEG to WebP
Convert WebP to PNG
Convert WebP to JPEG
Convert WebP to AVIF
Convert WebP to HEIC
Convert WebP to JPEG XL

More for WebP

Compress WebP
Resize WebP
What is WebP?

Compare formats

If you're picking a delivery format, comparisons can help.

PNG vs WebP

Frequently asked questions

How do I optimize WebP files?
Run "npx optimo image.webp" in your terminal. Optimo applies format-specific ImageMagick-powered compression that reduces WebP file size while preserving quality. The original file is kept if the optimized output is not smaller.

Is WebP optimization lossless?
By default, optimo uses lossless optimization for WebP. For additional compression, add the --lossy flag to allow minor quality trade-offs for significantly smaller files.

What tools does optimo use for WebP?
Optimo uses ImageMagick, MozJPEG, and SVGO (depending on format) under the hood with format-specific settings tuned for WebP files.