.gitignore Generator — Create gitignore Files

How the .gitignore Generator Works

Select the technologies in your project — programming languages, frameworks, IDEs, and operating systems. Click "Generate .gitignore" and get a comprehensive gitignore file with all the right ignore patterns. Copy the output and save it as .gitignore in your project root. The patterns are based on the official GitHub gitignore templates used by millions of developers worldwide.

Why You Need a .gitignore File

A .gitignore file tells Git which files and directories to ignore — keeping your repository clean and secure. Without it, you risk committing sensitive files (API keys, .env files), large binaries (node_modules, build artifacts), IDE configuration files, and OS-generated files (.DS_Store, Thumbs.db). A proper gitignore saves storage, speeds up Git operations, and prevents accidental exposure of secrets.

Common .gitignore Patterns Explained

node_modules/ ignores the entire folder. *.log ignores all log files. .env ignores environment variable files with secrets. dist/ and build/ ignore compiled output. __pycache__/ ignores Python bytecode. .idea/ and .vscode/ ignore IDE settings. Each technology has specific patterns — this generator knows them all so you do not have to memorize them.

Tips for Managing .gitignore

Place your .gitignore in the repository root for project-wide rules. Use a global gitignore (~/.gitignore_global) for personal IDE and OS files so they are not repeated in every project. If you have already committed a file that should be ignored, use git rm --cached filename to untrack it, then add the pattern to .gitignore. This generator creates the project-level file — customize it as needed for your specific setup.

Why .gitignore Isn't Working: Files Git Already Tracks

This is the problem that sends most people to a .gitignore generator in the first place, and generating a new file does not solve it. .gitignore only affects untracked files. Once Git has a file in the index, adding a matching rule changes nothing — the file keeps showing up in every diff and commit. The fix is to untrack it while keeping it on disk:

git rm --cached .env for a single file, or git rm -r --cached node_modules/ for a directory. Commit that removal, and from then on the ignore rule takes effect. To clear everything at once after a big .gitignore change: git rm -r --cached . then git add . and commit — Git re-reads the ignore rules as it re-adds. Use git check-ignore -v path/to/file when a rule seems to be ignored itself; it prints the exact file and line number of the pattern that matched, or nothing at all if no rule applies. The full pattern syntax, including the negation and precedence rules that trip people up, is in the official Git gitignore documentation.

One warning that matters more than the rest. If a secret — an .env, an API key, a private certificate — was ever committed, ignoring it now does not remove it from history. Anyone with the repository can still read it from an earlier commit, and on a public repo you should assume it is already scraped. Treat the credential as compromised and rotate it first, then purge the object from history with git filter-repo or the BFG Repo-Cleaner and force-push. GitHub's secret scanning will flag many provider tokens automatically, but rotating the key is the only step that actually closes the hole. Updated 2026-08-26.

Tips for Best Results

Start with the default settings to see how the tool works, then customize to match your needs. Preview your output before downloading or sharing to catch any adjustments. Use high-quality inputs where possible — better source material produces better results. Save your work frequently using the download or copy buttons. This tool runs entirely in your browser, so your creations are never uploaded to any server and remain completely private.