dakumisu/tampermonkey-cosmos-collection-downloader

This is a small browser script for downloading images from cosmos.so, a website used for building visual mood boards and image collections. It runs through Tampermonkey, a browser extension that lets you inject custom scripts into web pages you visit. Once installed, it does nothing on its own until you manually trigger it, so there is no risk of it running in the background without you knowing. When you open a collection page on cosmos.so and run the script from your browser's developer console, it automatically scrolls down the page to load every image in that collection, keeps track of which images it has already seen so it never downloads the same one twice, and saves each one to a subfolder inside your normal Downloads folder named after the collection. It specifically fetches the original, full resolution version of each image rather than a resized preview. Setting it up requires two one-time steps beyond installing Tampermonkey itself: telling Tampermonkey to use the browser's own download system instead of showing a save prompt for every file, and telling your browser to stop asking where to save each download. After that, using it is as simple as pasting the script once into Tampermonkey and running a single command in the console whenever you want to grab a collection. This tool is narrowly built for cosmos.so specifically and will not work on other sites. It cannot save files outside the browser's Downloads folder due to normal browser security limits. The README asks that you only download content you actually have the right to save.