About Dev Guides

Dev Guides is a free, open-access collection of 6 utilities built for speed and privacy. Every tool runs entirely in your browser — no data is ever sent to our servers, logged, or stored.

Our Philosophy

  • Local-first: All computation happens on your device using browser APIs.
  • No login required: Open a tool, use it, done.
  • No tracking of inputs: Your data stays on your machine.
  • Fast: Static pages with no server round-trips.

Available Tools

  • Git CheatsheetEssential Git commands reference with examples for everyday use.
  • JavaScript TipsPractical JavaScript tips, patterns, and modern ES6+ features.
  • SQL ReferenceComplete SQL syntax reference with examples for SELECT, JOIN, and more.
  • Regex CheatsheetRegular expression syntax reference with common pattern examples.
  • Markdown GuideComplete Markdown syntax guide with live examples.
  • SEO ChecklistComprehensive on-page SEO checklist for content and technical optimization.

Quality Policy

Each tool is tested against common edge cases. We prioritize correctness over feature bloat. If you find a bug, please contact us so we can fix it promptly.