resize

package module

v0.0.0-...-ff2e7cd Latest Latest Go to latest Published: Jan 16, 2026 License: MIT Imports: 6 Imported by: 0

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Valid go.mod file
Redistributable license
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Repository

github.com/imgutils-org/imgutils-resize

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README ¶

imgutils-resize

Resize with aspect ratio preservation

Documentation ¶

Overview ¶

Package resize provides image resizing with various interpolation methods.

Index ¶

func Resize(src image.Image, opts Options) image.Image
func ResizeExact(src image.Image, width, height int) image.Image
func ResizeFromFile(path string, opts Options) (image.Image, error)
func ResizeToFit(src image.Image, maxWidth, maxHeight int) image.Image
func ResizeToHeight(src image.Image, height int) image.Image
func ResizeToWidth(src image.Image, width int) image.Image
func SaveJPEG(img image.Image, w io.Writer, quality int) error
func SavePNG(img image.Image, w io.Writer) error
type Interpolation
type Options

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Resize ¶

func Resize(src image.Image, opts Options) image.Image

Resize scales an image to the specified dimensions.

func ResizeExact ¶

func ResizeExact(src image.Image, width, height int) image.Image

ResizeExact resizes an image to exact dimensions, ignoring aspect ratio.

func ResizeFromFile ¶

func ResizeFromFile(path string, opts Options) (image.Image, error)

ResizeFromFile reads an image file and resizes it.

func ResizeToFit ¶

func ResizeToFit(src image.Image, maxWidth, maxHeight int) image.Image

ResizeToFit resizes an image to fit within the specified dimensions, maintaining aspect ratio.

func ResizeToHeight ¶

func ResizeToHeight(src image.Image, height int) image.Image

ResizeToHeight resizes an image to a specific height, maintaining aspect ratio.

func ResizeToWidth ¶

func ResizeToWidth(src image.Image, width int) image.Image

ResizeToWidth resizes an image to a specific width, maintaining aspect ratio.

func SaveJPEG ¶

func SaveJPEG(img image.Image, w io.Writer, quality int) error

SaveJPEG saves the resized image as JPEG.

func SavePNG ¶

func SavePNG(img image.Image, w io.Writer) error

SavePNG saves the resized image as PNG.

Types ¶

type Interpolation ¶

type Interpolation int

Interpolation defines the resizing algorithm to use.

const (
	// NearestNeighbor is fastest but lowest quality.
	NearestNeighbor Interpolation = iota
	// Bilinear provides decent quality with good performance.
	Bilinear
	// CatmullRom provides high quality results.
	CatmullRom
)

type Options ¶

type Options struct {
	Width         int
	Height        int
	Interpolation Interpolation
	MaintainRatio bool
}

Options configures the resize operation.

Source Files ¶

View all Source files

resize.go

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