.gitignore Generator

A .gitignore file tells Git which files and directories to exclude from version control. Without proper .gitignore configuration, repositories accumulate files that should never be committed: compiled binaries (node_modules, __pycache__, target/, build/), IDE configuration (.idea, .vscode/settings.json, .DS_Store), environment files (.env containing secrets), log files, cache directories, and OS-specific metadata. Committing these files creates several problems: repository size bloats significantly (node_modules alone can be hundreds of megabytes), sensitive information like API keys and passwords gets permanently stored in git history (even after deletion, they remain in previous commits), merge conflicts arise from machine-specific IDE settings, and build artifacts cause confusion about what is source code and what is generated. The AllTools .gitignore Generator creates comprehensive ignore files for your technology stack — select your languages (Python, JavaScript, Java, Go, Rust), frameworks (React, Django, Spring, Rails), IDEs (VS Code, IntelliJ, Xcode), and operating systems (macOS, Windows, Linux) to generate a combined .gitignore covering all relevant patterns. Templates are based on GitHub's official gitignore collection, the most widely used reference. All generation runs in your browser.

Gitignore files use glob patterns for file matching: * matches anything except slashes, ** matches across directories, ? matches a single character, [abc] matches any listed character, and ! negates a pattern (re-includes a previously excluded file). Directory patterns end with / to match only directories. Leading / anchors patterns to the repository root. Common pattern strategies include: ignoring all files in a directory except specific ones (logs/* then !logs/.gitkeep), ignoring files by extension (*.log, *.pyc, *.class), and ignoring IDE directories while preserving shared configuration (.vscode/* then !.vscode/extensions.json). Global gitignore (~/.gitignore_global) handles per-user patterns like OS metadata files (.DS_Store, Thumbs.db) and personal IDE preferences, keeping them out of project-specific .gitignore files. For projects already tracking files that should be ignored, git rm --cached removes them from tracking without deleting the local file. The AllTools generator handles all these patterns and edge cases, producing a .gitignore file ready for immediate use in your repository.