The API now supports HEAD requests. They take the same options as GET and return the same status and headers, without the file. Previously, HEAD requests failed with a validation error.
HEAD requests that render count towards your quota, just like GET, even though you don’t receive the file. Without cache=true, every HEAD request renders again and counts. If link checkers, crawlers or uptime monitors send HEAD requests to your API URLs, turn on caching or point them elsewhere.
With cache=true, a HEAD request renders ahead of time: a later GET with the same options is served from the cache and doesn’t count towards your quota.
See HEAD requests.
