# Alpha1Convert - Online File Converter – Cal.com booking page > Alpha1Convert offers fast, cloud-based file conversion for video, audio, images, and documents. Upload files directly from your device and convert them online with no software required. Our file converter is an easy way to convert files online using a simple and secure website. You can upload documents, images, audio, or video files and complete the file conversion without installing any software. This online file conversion service supports common file formats and is made for everyday use. Files are processed safely in the cloud, so you can access them from any device. The file converter focuses on fast uploads, clear steps, and easy downloads. https://www.alpha1convert.com https://linktr.ee/alpha1convert Booking page: https://cal.com/alpha1convert ## Event types - [30 Min Meeting](https://cal.com/alpha1convert/30min): 30 min, confirmed instantly, event type id 4298040. Details: https://cal.com/alpha1convert/30min.md - [15 Min Meeting](https://cal.com/alpha1convert/15min): 15 min, confirmed instantly, event type id 4298042. Details: https://cal.com/alpha1convert/15min.md ## Check availability ```http GET https://api.cal.com/v2/slots?eventTypeId=&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone= cal-api-version: 2024-09-04 ``` The response is `{"data":{"YYYY-MM-DD":[{"start":""}]}}`; no API key is needed. ## Book Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`). ## More - API docs: https://cal.com/docs/api-reference/v2/introduction