This article offers some use cases for showing how to resize, crop, fit, fill and align images.

Resizing Images#

We use the URL query of image for resizing images. For example:

Specify the width and preserve ratio#

1![Resize](featured-sample.webp?width=300px)

Resize

Specify the height and preserve ratio#

1![Resize](featured-sample.webp?height=200px)

Resize

Specify the width and height#

1![Resize](featured-sample.webp?width=300px&height=200px)

Resize

It can be used not only for page resources, but also for the static images and external images. However, in addition to page resources, others are resized by inline style, that is, their original size will not change.

Aligning Images#

We can easily align images by adding URL fragments. Such as #center, #float-start and #float-end represents align center, float start and float end respectively.

Center#

Adding the #center fragment for aligning images to the center.

For example: ![Center](/featured-sample.webp#center).

Center

Float Start#

Float Start

Adding the #float-start fragment for floating images to the start.

For example: ![Float Start](/featured-sample.webp#float-start).

Float End#

Float End

Similarly, we can also float images to the end by adding the #float-end fragment.

For example: ![Float End](/featured-sample.webp#float-end).

Caption#

HBS allows using image title as caption, this feature is disabled by default, you need to enable the post.imageTitleAsCaption parameter:

1[post]
2  imageTitleAsCaption = true
1post:
2  imageTitleAsCaption: true
1{
2   "post": {
3      "imageTitleAsCaption": true
4   }
5}
1![Image Caption](/featured-sample.webp "Use Image Title as Caption")

Image Caption
Use Image Title as Caption

Crop Images#

Crop an image to match the given dimensions without resizing. You must provide both width and height. Use the anchor1 option to change the crop box anchor point.

1![Crop Image](/featured-sample.webp?crop=[width]x[height],[anchor])
  • The size [width]x[height] is required.
  • [anchor] is optional, the , is used to separate the size and anchor.
Examples
Crop Image
crop=200x200,TopLeft
Crop Image
crop=200x200,Top
Crop Image
crop=200x200,TopRight
Crop Image
crop=200x200,Left
Crop Image
crop=200x200,Center
Crop Image
crop=200x200,Right
Crop Image
crop=200x200,BottomLeft
Crop Image
crop=200x200,Bottom
Crop Image
crop=200x200,BottomRight

Fill Images#

Crop and resize an image to match the given dimensions. You must provide both width and height. Use the anchor1 option to change the crop box anchor point.

1![Fill Image](/featured-sample.webp?fill=[width]x[height],[anchor])
  • The size [width]x[height] is required.
  • [anchor] is optional, the , is used to separate the size and anchor.
Examples
Fill Image
fill=150x200,TopLeft
Fill Image
fill=150x200,Top
Fill Image
fill=150x200,TopRight
Fill Image
fill=150x200,Left
Fill Image
fill=150x200,Center
Fill Image
fill=150x200,Right
Fill Image
fill=150x200,BottomLeft
Fill Image
fill=150x200,Bottom
Fill Image
fill=150x200,BottomRight

Fit Images#

Downscale an image to fit the given dimensions while maintaining aspect ratio. You must provide both width and height.

1![Fit Image](/featured-sample.webp?fit=[width]x[height])

Fit Image

Filters#

Brightness#

The brightness must be in range (-100, 100).

1![Image Brightness](/featured-sample.webp?brightness=-30)

Image Brightness

ColorBalance#

ColorBalance creates a filter that changes the color balance of an image. The percentage parameters for each color channel (red, green, blue) must be in range (-100, 500).

1![Image ColorBalance](/featured-sample.webp?colorBalance=-50,50,150)

Image ColorBalance

Colorize#

Colorize creates a filter that produces a colorized version of an image. The hue parameter is the angle on the color wheel, typically in range (0, 360). The saturation parameter must be in range (0, 100). The percentage parameter specifies the strength of the effect, it must be in range (0, 100).

1![Image Colorize](/featured-sample.webp?colorize=-100,50,150)

Image Colorize

Contrast#

The contrast must be in range (-100, 100).

1![Image Contrast](/featured-sample.webp?contrast=50)

Image Contrast

Gamma#

Gamma creates a filter that performs a gamma correction on an image. The gamma parameter must be positive. Gamma = 1 gives the original image. Gamma less than 1 darkens the image and gamma greater than 1 lightens it.

1![Image Gamma](/featured-sample.webp?gamma=2)

Image Gamma

GaussianBlur#

Applies a gaussian blur to an image.

1![Image GaussianBlur](/featured-sample.webp?gaussianBlur=2)

Image GaussianBlur

Grayscale#

Grayscale creates a filter that produces a grayscale version of an image.

1![Image Grayscale](/featured-sample.webp?grayscale)

Image Grayscale

Hue#

Hue creates a filter that rotates the hue of an image. The hue angle shift is typically in range -180 to 180.

1![Image Hue](/featured-sample.webp?hue=90)

Image Hue

Invert#

Invert creates a filter that negates the colors of an image.

1![Image Invert](/featured-sample.webp?invert)

Image Invert

Pixelate#

Pixelate creates a filter that applies a pixelation effect to an image.

1![Image Pixelate](/featured-sample.webp?pixelate=8)

Image Pixelate

Saturation#

Saturation creates a filter that changes the saturation of an image.

1![Image Saturation](/featured-sample.webp?saturation=100)

Image Saturation

Sepia#

Sepia creates a filter that produces a sepia-toned version of an image.

1![Image Sepia](/featured-sample.webp?sepia=200)

Image Sepia

Sigmoid#

Sigmoid creates a filter that changes the contrast of an image using a sigmoidal function and returns the adjusted image. It’s a non-linear contrast change useful for photo adjustments as it preserves highlight and shadow detail.

1![Image Sigmoid](/featured-sample.webp?sigmoid=2,5)

Image Sigmoid

UnsharpMask#

UnsharpMask creates a filter that sharpens an image. The sigma parameter is used in a gaussian function and affects the radius of effect. Sigma must be positive. Sharpen radius roughly equals 3 * sigma. The amount parameter controls how much darker and how much lighter the edge borders become. Typically between 0.5 and 1.5. The threshold parameter controls the minimum brightness change that will be sharpened. Typically between 0 and 0.05.

1![Image UnsharpMask](/featured-sample.webp?unsharpMask=10,1,0.05)

Image UnsharpMask


  1. When using the Crop or Fill method, the anchor determines the placement of the crop box. You may specify TopLeft, Top, TopRight, Left, Center, Right, BottomLeft, Bottom, BottomRight, or Smart. The default value is Smart↩︎ ↩︎