本文提供一些调整图片大小和对齐图片的用例。
调整图片大小#
我们利用 URL 的查询字符串来调整图片大小。
指定宽度和保留比率#
1![Resize](featured-sample.webp?width=300px)
指定高度和保留比率#
1![Resize](featured-sample.webp?height=200px)
指定宽度和高度#
1![Resize](featured-sample.webp?width=300px&height=200px)
它不仅可以用于页面资源,而且也适用于 static 图像和外部图像。 但是,除了页面资源外,其他资源的大小都是按内联样式调整的,也就是说,它们的原始大小不会改变。
对齐图像#
我们可以利用 URL 片段轻易地对齐图像,比如:#center
, #float-start
和 #float-end
分别表示居中对齐、向左浮动和向右浮动。
居中对齐#
添加 #center
使图片居中对齐。
举个例子:![Center](/center.png#center)
。
向左浮动#
添加 #float-start
使图片向左浮动。
举个例子:![Float Start](/featured-sample.webp#float-start)
。
向右浮动#
同样的,我们也可以添加 #float-end
使图片向右浮动。
举个例子:![Float End](/featured-sample.webp#float-end)
。
Caption#
HBS 允许使用图片标题作为 caption,但这个功能默认是关闭的,你需要启用 post.imageTitleAsCaption
参数:
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")
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 | ||
---|---|---|
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 | ||
---|---|---|
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])
Filters#
Brightness#
The brightness
must be in range (-100, 100)
.
1![Image Brightness](/featured-sample.webp?brightness=-30)
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)
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)
Contrast#
The contrast
must be in range (-100, 100)
.
1![Image Contrast](/featured-sample.webp?contrast=50)
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)
GaussianBlur#
Applies a gaussian blur to an image.
1![Image GaussianBlur](/featured-sample.webp?gaussianBlur=2)
Grayscale#
Grayscale creates a filter that produces a grayscale version of an image.
1![Image Grayscale](/featured-sample.webp?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)
Invert#
Invert creates a filter that negates the colors of an image.
1![Image Invert](/featured-sample.webp?invert)
Pixelate#
Pixelate creates a filter that applies a pixelation effect to an image.
1![Image Pixelate](/featured-sample.webp?pixelate=8)
Saturation#
Saturation creates a filter that changes the saturation of an image.
1![Image Saturation](/featured-sample.webp?saturation=100)
Sepia#
Sepia creates a filter that produces a sepia-toned version of an image.
1![Image Sepia](/featured-sample.webp?sepia=200)
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)
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)
-
When using the
Crop
orFill
method, the anchor determines the placement of the crop box. You may specifyTopLeft
,Top
,TopRight
,Left
,Center
,Right
,BottomLeft
,Bottom
,BottomRight
, orSmart
. The default value isSmart
. ↩︎
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