Colour is the part of design that can be measured and the part people argue about anyway. These articles treat it as a number: what a screen can show, what a printer can reach, and what changes on the way between them.
Photo Editing
Dithering Side by Side: Why Atkinson Looks Like a Mac and Bayer Like a Game
Eight dithering methods on one picture, with the same palette and the same options. Every kernel and divisor written out, the Bayer matrix built by recursion, and the linear light step that almost every quick implementation skips.
Take the scratches and dust out of a scanned family photograph
A scratch is thin and disagrees with its surroundings in almost every direction at once. A real edge disagrees in one or two. That single difference finds the damage with plain arithmetic, and an inpainting model fills what you agree to. All of it in your browser.
Turn a phone photo of a document into something that looks scanned
A photographed page is tilted, tapered, grey and shadowed, and all three faults are completely determined. Four corners give eight equations, a heavy blur estimates the lighting so it can be divided out, and Otsu picks the threshold. No model, no download, and it finishes before you let go of the button.
Brighten dark photos in your browser with a 590 KB neural network
A brightness slider adds the same amount everywhere, which is why a dark photo goes pale instead of bright. A small trained network predicts a different correction for every pixel, plus one gamma and one colour matrix for the whole frame. It runs in your browser tab and your picture never leaves it.
Remove Moire From a Scanned Image: Why Blurring Never Works
A scanned magazine page shows a wavy pattern that was never on the paper: the print screen beating against the scanner's sample grid. Blurring trades one problem for a worse one. Measuring the screen in a frequency picture and notching out exactly those frequencies does not, and the workbench in this article does it in your browser tab.
Fix White Balance: The One-Click Correction, Explained
A colour cast is a wrong assumption applied evenly, which means it can be divided back out. Click something that was neutral, read the three channel factors, and understand exactly where a global correction stops working.
AI Product Photos That Do Not Look Fake: Light, Shadow, Perspective
A real product photo on a generated background gives itself away on exactly three axes: light direction, shadow quality and perspective. Here is the physics in plain words, a browser tool that walks you through all three checks on your own composite, and the prompt lines that stop the mismatch happening in the first place.
Why Your Drop Shadow Looks Fake, and the Two Minute Fix
The default shadow describes light that does not exist anywhere. Once you see it you cannot unsee it, and correcting it takes about a minute per element.
WordPress Images Washed Out: The Colour Profile Fix
The photograph looked right in your editor and flat on the site. Here is where WordPress and its plugins drop the colour profile, and the export habit that ends it.
