Highlark - Screenshot Annotator

The lightweight open-source screenshot annotator. Capture, annotate, and share.

Highlark - Screenshot Annotation Made Simple Capture any part of your screen, add professional annotations, and share instantly. Highlark is the annotation tool that respects your privacy. **Why Choose Highlark?** - **100% Private** — All your screenshots and annotations stay on your computer. Nothing is uploaded to servers. Ever. - **Fast & Lightweight** — No bloat. Just the tools you need, nothing more. - **Completely Free** — Open source, ad-free, forever. **Powerful Features** - 📸 **One-Click Screenshot** — Capture the active tab instantly - 🖊️ **8 Annotation Tools** — Text, arrows, rectangles, circles, lines, image insert, crop, and blur - 🎨 **Full Customization** — Choose colors, font sizes, and line widths - ⌛ **Multi-Step Undo** — Undo dozens of actions, not just the last one - 🔒 **Blur for Redaction** — Hide sensitive information with blur or invert-blur mode - 💾 **Local Gallery** — All screenshots stored securely in your browser - 📥 **Download & Share** — Export as PNG or generate shareable links - ⚡ **Zero-Lag Performance** — Instant capture and smooth annotations **Perfect For** - 🐛 **Bug Reports** — Annotate issues with precise arrows and text - 📚 **Education** — Highlight important content in tutorials and documentation - 🎨 **Design Reviews** — Quick feedback with professional markups - 📋 **Documentation** — Create clear step-by-step guides with images **Privacy You Can Trust** All your data stays on your device: - ✓ No cloud storage - ✓ No analytics or tracking - ✓ No third-party integration - ✓ Complete control over your content **Open Source** Review our code on GitHub and contribute: https://github.com/cbonoz/highlark Start capturing and annotating like a pro. Download Highlark today.