Everything about PNG

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.

A tool that guesses which text is sensitive will miss the one that mattered. This one covers every text field it finds and lets you click back what can stay. It also refuses to default to a blur, because blurring and pixelation can be undone, and there is published work showing exactly how.

A cutout blur draws a line and blurs one side of it, which is a thing no lens has ever done. A depth model gives every pixel a distance instead, so sharpness can fall away gradually the way it does optically. The map is a downloadable asset in its own right, and none of it leaves your browser.

A background remover that works by colour asks every pixel a yes or no question, and the honest answer for a pixel that a strand of hair passes through is neither. Matting gives that pixel a fraction instead. Two small networks, both running in your browser, and the grey alpha view that tells you in a second whether the cutout will work.

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.

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.

A WiFi QR code generator that runs entirely in your tab, plus the payload syntax, error correction maths and print sizes that decide whether a code scans.

An enormous amount of what people need to see is a picture of a screen, and most of those pictures are worse than they need to be for reasons that take seconds to fix.

The favicon is the one image on your site nobody checks at the size everybody sees. Here is the short list of files a site still needs, the two measurements that decide whether your mark survives a browser tab and an Android mask, and exactly where the WordPress site icon stops.

Amateur cut-outs are not spotted by their shape. They are spotted by a halo of the old background and hair that has been shaved off in a curve no head ever had.