A from-scratch, standard-library-only Go take on the ergonomics of Node's sharp: build a Pipeline, chain operations, export to a format. Everything runs on the Go standard library (image, image/color, image/png, image/jpeg and math) over an in-memory RGBA buffer — no cgo, no third-party dependencies. Construct a pipeline from an image, file, byte slice or reader; the source is copied on construction and never mutated. Operations apply eagerly and chain by returning the same *Pipeline: resize with FitExact/FitContain/FitCover and Nearest/Bilinear sampling, crop/extract, extend, rotate and flip, a full colour suite (grayscale, negate, tint, brightness, contrast, gamma, saturation, threshold), separable-Gaussian blur, sharpen and generic convolution, alpha-blended compositing and flatten, plus PNG/JPEG in and out. A deferred error model retains the first failure and turns later steps into no-ops, so it surfaces once from the terminal export or from Err.

$ go get github.com/malcolmston/sharp

import "github.com/malcolmston/sharp"

buf, _ := sharp.FromFile("input.jpg").
	Resize(sharp.ResizeOptions{Width: 800, Fit: sharp.FitContain}).
	Grayscale().
	Blur(2).
	ToJPEG(85)
_ = sharp.FromFile("input.jpg").ToFile("output.jpg", sharp.FormatJPEG, 85)