Holiday calendar
Click any chip to switch — the overlay below updates in real time. Each chip shows when auto-detection picks it.
Pretend it's…
Test the auto-detect heuristic with any date, without messing with your clock.
Copy & paste
Pick a framework — the snippet matches the options you've set above.
Bookmarklet
Drag the pill onto your bookmarks bar, then click it on any other site to deck the halls.
Holiday Overlay
Drag the pill to your bookmarks bar
One-click overlay on any site. Click your bookmark a second time to remove it. Open the full showcase →