Bucket Gateway Optimizer
Last updated
Last updated
The 4EVERLAND Optimizer is a real-time dynamic image optimization service that automatically optimizes images to accelerate image transmission speed and save bandwidth.
It uses a simple API to process images in your 4EVERLAND Bucket.
Request Format:
{yourBucketName}.4everland.store/{fileName}?{parameter}={value}
Example:
To crop the file 04.jpeg in the 'opflower' Bucket to a width of 250 and height of 150, with an aspect ratio of 5:3, the API request would be:
opflower.4everland.store/04.jpeg?width=250&height=150&aspect_ratio=2:3
Request Result:
Original Image Before Processing:
Parameter: width Units: Pixels Default: auto
Resize the output image to the given width maintaining the current aspect ratio.
Aspect Ratio Crop has priority over the Width or Height commands. If the Aspect Ratio Crop is defined in the query and is not set to auto, it will be applied first.
?width=250
?width=100
Parameter: height Units: Pixels Default: auto
Resize the output image to the given width maintaining the current aspect ratio.
?height=250
?height=100
Parameter: aspect_ratio Units: Pixels Default: auto
Crop the output image to match the given aspect ratio. The default origin point (gravity) is positioned on the center of the image.
?aspect_ratio=1:1
?aspect_ratio=2:1
Parameter: quality Units: Percent Range: 0-100 Default: 85
Determines the compression level of the resulting image with 100 being the lowest level of compression and 0 being the highest. Higher compression means smaller files, but might visually degrade the image (e.g. JPEG compression under 70 tends to produce visible artefacts.
?quality=10
?quality=100
Parameter: sharpen Units: Boolean Default: false
Sharpen the output image.
?sharpen=true
?sharpen=false
Parameter: blur Units: Number Range: 0-100 Default: 0
Blur the output image.
?blur=10
?blur=30
Parameter: crop Units: Pixels Format 1: width,height Format 2: width,height,x,y
Crop the output image to the given width and height. Two formats are accepted. Format 1 one only includes the width and height of the crop. Format 2 also includes the X and Y position where the crop should start. Image resizing with the width and height parameters is processed after the crop and the resized measurements apply.
If only width and height are given, the Crop Gravity parameter will be used.
?crop=180,60
?crop=180,60,10,10
Parameter: crop_gravity Default: center
Values: center, forget, east, north, south, west, northeast, northwest, southeast, southwest
Set the gravity of the crop operation. This is used with the Format 1 cropping only and snaps the crop to the selected position.
?crop=180,60&crop_gravity=center
?crop=180,60&crop_gravity=northeast
Parameter: flip Units: Boolean Default: false
Flip the output image vertically.
?flip=true
?flip=false
Parameter: flop Units: Boolean Default: false
Flip the output image horizontally.
?flop=true
?flop=false
Parameter: brightness Units: Number Range: -100-100 Default: 0
Adjusts the brightness of the output image. This can either brighten or darker the image.
?brightness=80
?brightness=-20
Parameter: saturation Units: Number Range: -100 - 100 Default: 0
Adjusts the saturation of the output image. Use -100 for grayscale.
?saturation=80
?saturation=-20
Parameter: hue Units: Number Range: 0-100 Default: 0
Adjusts the hue of the output image by rotating the color wheel. The default value of 0 is the base color and increasing the value modulates to the next color for each 33 change.
?hue=80
?hue=20
Parameter: contrast Units: Number Range: -100 - 100 Default: 0
Adjusts the contrast of the output image.
?contrast=-20
?contrast=80
Parameter: auto_optimize Units: String Values: low,medium,high Default: none
Automatically enhance the output image with multiple levels of optimizations. With high, sharpening is also applied automatically.
?auto_optimize=low
?auto_optimize=high
Parameter: sepia Units: Integer Values: 0 - 100 Default: 0
Changes the image color to the sepia color scheme.
?sepia=20
?sepia=80
