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UrlFetch limits

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If you use UrlFetchApp to fetch resources from the web, keep these limits in mind:

  • The maximum request size is 10 MB.
  • The maximum response size is 10 MB.
  • The maximum size of all headers (header names and content) is 8 KB.
  • The maximum number of headers you can include in the request or response is 100.
  • The maximum number of fetch() calls that a user may make per day is 20,000.
  • The maximum amount of time the request may take is 30 seconds.