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Digital image size in pixels and photo print size
This article is about the relation between an image size in pixels and a photographic print size. First, it recommends the photographic print size for given digital image dimensions in pixels. Second, it finds the resulting pixels per inch value for a printed digital image with known linear and pixel dimensions.
Invert image colors
This online calculator inverts image colors and produces photo negatives.
Tips and tricks #13: Bitmaps and Pixel manipulation
This article describes how to write calculators for an image manipulation
Image manipulation
This online calculator can perform simple image manipulation tasks, like rotation and flipping/mirroring
Color to Grayscale Conversion
This online calculator converts color image to grayscale image using the luminosity method
Jpeg file structure
The calculator displays the dimensions of an input jpeg file as well as jiff markers stored in the file.
Color image to black and white image
This online calculator converts color images to black and white images. Two options are possible: luminosity threshold or Floyd–Steinberg dithering.
Jpeg image meta-data
The calculator displays meta-data stored in a jpeg file.
Digital images parameters comparison
The calculator allows you to compare the parameters of different photographs saved in EXIF image data.
Box filters for image processing
This online calculator allows you to process the image with the selected box filter, or use your own box filter.
Median filter
This online calculator applies median filter to an image
Watercolor effect
This online calculator applies a watercolor effect on the loaded image
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