Help us shape the future of Go! Take the 2026 Go Developer Survey

Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
- API
  
  Reference documentation for the pkg.go.dev API
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

webp

package module

Go to main page

Versions in this module

v0

v0.2.1

Oct 25, 2026

v0.2.0

Oct 23, 2026

Changes in this version

+ func EncodeLossy(w io.Writer, m image.Image, quality int) error

+ func EncodeLossyToBytes(m image.Image, quality int) ([]byte, error)

v0.1.0

Oct 23, 2026

Changes in this version

+ var ErrEmpty = errors.New("webp: the image has no pixels")

+ var ErrTooLarge = errors.New(...)

+ func Encode(w io.Writer, m image.Image) error

+ func EncodeToBytes(m image.Image) ([]byte, error)