images.Filter
Syntax
images.Filter FILTERS... IMAGE
Returns
images.ImageResource
Apply one or more image filters to the given image.
To apply a single filter:
{{ with resources.Get "images/original.jpg" }}
{{ with images.Filter images.Grayscale . }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ end }}
To apply two or more filters, executing from left to right:
{{ $filters := slice
images.Grayscale
(images.GaussianBlur 8)
}}
{{ with resources.Get "images/original.jpg" }}
{{ with images.Filter $filters . }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ end }}
You can also apply image filters using the Filter method on a Resource object.
Example
{{ with resources.Get "images/original.jpg" }}
{{ with images.Filter images.Grayscale . }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ end }}
Original
Processed
Image filters
Use any of these filters with the images.Filter function, or with the Filter method on a Resource object.
- images.AutoOrient
- Returns an image filter that rotates and flips an image as needed per its EXIF orientation tag.
- images.Brightness
- Returns an image filter that changes the brightness of an image.
- images.ColorBalance
- Returns an image filter that changes the color balance of an image.
- images.Colorize
- Returns an image filter that produces a colorized version of an image.
- images.Contrast
- Returns an image filter that changes the contrast of an image.
- images.Gamma
- Returns an image filter that performs gamma correction on an image.
- images.GaussianBlur
- Returns an image filter that applies a gaussian blur to an image.
- images.Grayscale
- Returns an image filter that produces a grayscale version of an image.
- images.Hue
- Returns an image filter that rotates the hue of an image.
- images.Invert
- Returns an image filter that negates the colors of an image.
- images.Opacity
- Returns an image filter that changes the opacity of an image.
- images.Overlay
- Returns an image filter that overlays the source image at the given coordinates, relative to the upper left corner.
- images.Padding
- Returns an image filter that resizes the image canvas without resizing the image.
- images.Pixelate
- Returns an image filter that applies a pixelation effect to an image.
- images.Process
- Returns an image filter that processes the given image using the given specification.
- images.Saturation
- Returns an image filter that changes the saturation of an image.
- images.Sepia
- Returns an image filter that produces a sepia-toned version of an image.
- images.Sigmoid
- Returns an image filter that changes the contrast of an image using a sigmoidal function.
- images.Text
- Returns an image filter that adds text to an image.
- images.UnsharpMask
- Returns an image filter that sharpens an image.