Having trouble loading this app?
If you opened this HTML file directly (or your browser blocked module scripts/workers), the JS may not load. Serve the folder with a local web server:

Python: python3 -m http.server 8000

Node: npx serve .

Then open http://localhost:8000/

If the app loads normally, this message will disappear.

Grommet Tool — Browser fork

All processing happens in your browser. Nothing is uploaded. Output: stamped PDF you can download.

Input PDF

Marker type

Banner width (in)

Banner height (in)

Inset (in)

Total grommet count

Edge placement

Marker size (in)

Stroke width (pt)

Color

Preview (page 1)

No PDF loaded