How to create a subscribtion link to ICS/Webcal calendars?

Question

ICS files on Android are downloaded by default an not opened by the calendar app. When using Google Calendar or Outlook on desktops, ICS files need to be imported manually after downloading. What link format is required for the ICS files to be automatically added to the desired calendar?

Answer 1

Here is a list of the different link formats:

Desktop/Android/Apple Calendar

webcal://LINK_TO_ICS_FILES

Example:

webcal://www.officeholidays.com/ics/various

Google Calendar

https://www.google.com/calendar/render?cid=WEBCAL_LINK_URL_ENCODED

Example:

https://www.google.com/calendar/render?cid=webcal%3A%2F%2Fnextcloud.kni.tirol%2Fremote.php%2Fdav%2Fpublic-calendars%2FTYESMsejwnMdmqaX%3Fexport

Outlook 365

https://outlook.office.com/owa?path=%2Fcalendar%2Faction%2Fcompose&rru=addsubscription&url=WEBCAL_LINK_URL_ENCODED&name=CALENDAR_NAME

Example:

https://outlook.office.com/owa?path=%2Fcalendar%2Faction%2Fcompose&rru=addsubscription&url=webcal%3A%2F%2Fwww.officeholidays.com%2Fics%2Fvarious&name=My%20Calendar

Outlook Live

https://outlook.live.com/owa?path=%2Fcalendar%2Faction%2Fcompose&rru=addsubscription&url=WEBCAL_LINK_URL_ENCODED&name=CALENDAR_NAME

Example:

https://outlook.live.com/owa?path=%2Fcalendar%2Faction%2Fcompose&rru=addsubscription&url=webcal%3A%2F%2Fwww.officeholidays.com%2Fics%2Fvarious&name=My%20Calendar

Download .ics file

https://LINK_TO_ICS_FILES

Example:

https://www.officeholidays.com/ics/various