Slotclip turns Google Calendar’s week view into a picker for open time. I drag over free time to make blocks, which snap to 15 minutes and stay clear of events, or use Fill free time to select every opening inside my working hours. Copy availability puts it on the clipboard as a dated list, formatted for an email, with a plain-text fallback:
### Thursday, August 20
- 9:00 AM - 10:30 AM EDT
- 11:30 AM - 1:00 PM EDTTimes follow Calendar’s own language, clock and timezone, and the zone label switches between EDT and EST across a daylight saving change. A timezone ruler can add the recipient’s local times to each line.
It reads the calendar from the page, so there’s no Calendar API, OAuth or account, and nothing leaves the browser. The only permission it asks for is on calendar.google.com. Google doesn’t publish Calendar’s page structure, so a redesign could break it. Every lookup lives in one file, and tests run against scrubbed copies of real Calendar pages.