Build a .gitignore for Any Tech Stack in Seconds
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The problem
Every new project needs a .gitignore file, and every tech stack has different files that should never be committed. Skip it, and you end up with node_modules/ bloating your repo, .env files leaking secrets into your commit history, or OS junk like .DS_Store and Thumbs.db cluttering every directory listing.
The consequences range from annoying to serious. A committed .env file with database credentials or API keys is a security incident — even if you delete it later, it lives in your git history forever (unless you rewrite history, which is its own headache). A committed node_modules/ directory can add hundreds of megabytes to your repo and make cloning painfully slow.
How it works
- Pick your languages and frameworks — Node.js, Python, Go, Rust, Java, React, Unity, and dozens more.
- The tool combines the right ignore patterns for your stack, deduplicating overlapping rules.
- Copy the result and save it as
.gitignorein your project root.
Common mistakes a good .gitignore prevents
- Committing
.envfiles — API keys, database URLs, and secrets should never be in version control - Committing
node_modules/— dependency folders belong in your lockfile, not your repo - Committing build output —
dist/,build/,__pycache__/, and.classfiles are generated artifacts - Committing IDE config —
.idea/,.vscode/settings are personal and differ per developer
Global vs. local .gitignore
Your project .gitignore should contain rules specific to the tech stack — things every contributor needs to ignore. OS-level files like .DS_Store (macOS) or Thumbs.db (Windows) are better handled in a global gitignore, configured once on your machine with git config --global core.excludesFile ~/.gitignore_global. This keeps your project file clean and avoids arguments about whose OS junk to include.
When to use this tool
- Starting a new project and want a correct
.gitignorefrom day one - Adding a new framework to an existing project and need to update ignore rules
- Auditing a repo that was started without a
.gitignore
Why I built it
I used to copy .gitignore files from old projects and end up with stale rules from frameworks I no longer use. Or I would start a project, forget the file entirely, and have to clean up committed junk later. A generator that combines patterns for your exact stack removes one more thing to remember at project setup.