ivbera/chess-pgn-downloader

This is a small browser based tool for downloading your Chess.com game history. Chess.com stores every game you have played in monthly archives, and this tool lets you pull those archives down as PGN files, which is the standard text format used to record chess games so they can be opened in other chess software or analysis tools. To use it, you type in a Chess.com username, pick a range of months you want, and click Search archives. The tool then checks which monthly archives actually exist for that account and shows them to you before you download anything. Once you review the list, you click Download PGNs and it fetches the games. You can get one PGN file per month, or one combined file that merges every month together, and everything can be exported as a ZIP. The whole thing runs inside your web browser. There is nothing to install and no account login needed, either for the tool itself or for Chess.com. It talks directly to Chess.com's public API to fetch the archives, so no usernames or game files ever pass through a separate server. This makes it simple to use for anyone who just wants a quick way to back up or export their own public game history, or someone else's, without setting up any software. To use this tool you need a modern web browser, an internet connection, and a public Chess.com profile to pull data from. The README does not describe any installation steps beyond opening it in a browser, and it does not mention a license, so it is unclear what usage rights, if any, are granted for reusing the code.