.gitignore generator

Compose a .gitignore for your repository by combining local technology templates with your own patterns. The generator produces text to review and place in your project; it does not open the repository or change Git’s index. Use it for dependencies, build output and caches. Choose exclusions based on what your project actually generates: a pattern useful elsewhere may hide a file your team needs to track.

Selected templates are assembled in catalogue order. Exact duplicate patterns across templates are removed, but overlapping patterns such as *.log and a specific path are not simplified. Custom rules are appended in their original order. Their repetitions are retained because a repeated exclusion after a negation can change the result. Backslash escapes and escaped spaces are preserved.

Git interprets patterns relative to the .gitignore location. A leading / anchors a pattern there; a trailing / targets a directory. * and ** do not always have the same scope. ! includes a previously excluded path again, but Git cannot include a file whose parent directory is entirely ignored. An initial # starts a comment; escape it when the filename really starts with that character.

The environment template ignores .env and .env.* and then adds !.env.example so a secret-free example can be tracked. Ignore rules primarily affect untracked files. A file already in the index remains tracked even if a new pattern matches it. The generator does not remove indexed files, rewrite history or scan for secrets.