Function _getAsBlob(url, sheet, range) { var rangeParam = ''

var sheetParam = ''
if (range) {
rangeParam =
'&r1=' + (range.getRow() - 1)
+ '&r2=' + range.getLastRow()
+ '&c1=' + (range.getColumn() - 1)
+ '&c2=' + range.getLastColumn()
}
if (sheet) {
sheetParam = '&gid=' + sheet.getSheetId()
}
// A credit to https://gist.github.com/Spencer-Easton/78f9867a691e549c9c70
// these parameters are reverse-engineered (not officially documented by Google)
// they may break overtime.
var exportUrl = url.replace(/\/edit.*$/, '')
+ '/export?exportFormat=pdf&format=pdf'
+ '&size=LETTER'
+ '&portrait=true'
+ '&fitw=true'
+ '&top_margin=0.75'
+ '&bottom_margin=0.75'
+ '&left_margin=0.7'
+ '&right_margin=0.7'
+ '&sheetnames=false&printtitle=false'
+ '&pagenum=UNDEFINED' // change it to CENTER to print page numbers
+ '&gridlines=true'
+ '&fzr=FALSE'
+ sheetParam
+ rangeParam

Logger.log('exportUrl=' + exportUrl)
var response
var i = 0
for (; i < 5; i += 1) {
response = UrlFetchApp.fetch(exportUrl, {
muteHttpExceptions: true,
headers: {
Authorization: 'Bearer ' + ScriptApp.getOAuthToken(),
},
})
if (response.getResponseCode() === 429) {
// printing too fast, retrying
Utilities.sleep(3000)
} else {
break
}
}

Спасибо доброму человеку https://xfanatical.com/blog/print-google-sheet-as-pdf-using-apps-script/