Tick the tech stacks and tools your project uses (Node, Python, macOS, VS Code, and more), and the tool merges their standard ignore rules into one deduplicated .gitignore ready to copy or download.
Yes. Select as many stacks as your project actually uses and the tool merges every matching rule set into one file with duplicates removed.
Yes, as a starting point — review names, paths, and details against your actual project before committing.
No. Everything is built client-side in your browser; nothing is sent anywhere until you commit it yourself.