|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 Flip & Rotate|
This calculator allows you to perform simple image manipulation tasks online.
|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.
This online calculator applies median filter to an image
This online calculator applies a watercolor effect to an uploaded image by sequentially applying a median filter and a box filter sharpening.