All the annotation tools you need, perfectly calibrated
Pen and keyboard optimized — fast, precise, and thoughtfully tuned to feel right.
Select Tool
Select, move, and arrange annotations with ease.
Lasso Tool
Freeform select multiple elements at once.
Pen Tool
Natural handwriting with automatic line smoothing.
Line Tool
Perfect straight lines and arrows for diagrams and emphasis.
Stroke Eraser
Mistakes? No problem with stroke-by-stroke erasing.
Text-aware Highlighter
Highlight that snaps to the text on the PDF beneath.
Text Tool
Utilize your keyboard for fast annotations and comments.
Shape Tool
Quick rectangles and circles for diagrams and callouts.
Note Tool
Drop sticky notes anywhere to add context without clutter.
Available as an Obsidian.md plugin
Smoothly integrated into Obsidian and optimized to provide the best possible experience.
- Seamless integration
- Performance optimized
- Annotate academic papers & exercise sheets
- Perfect for PKM
- PDF for maximal portability
£15 and it's yours
Pay once, use forever. No subscriptions, no hidden fees.
Starlight PDF License
The complete PDF editing solution
- Everything you need to annotate PDFs
- Unlimited annotations and files
- Smooth performance
- Privacy first
Compare with Competitors
| Feature | Starlight PDF | Others |
|---|---|---|
| One-time payment | Yes | No |
| Pen-optimized tools | Yes | Rare |
| Offline | Yes | Rare |
| Obsidian integration | Yes | No |
Ready to transform your PDF workflow?
Enjoy natural, seamless PDF editing — pay once, use forever.