Example on how to export a Google sheet to various formats, includes most PDF options

exportSpreadsheet.gs

function exportSpreadsheet() {
 
  //All requests must include id in the path and a format parameter
  //https://docs.google.com/spreadsheets/d/{SpreadsheetId}/export
 
  //FORMATS WITH NO ADDITIONAL OPTIONS
  //format=xlsx       //excel
  //format=ods        //Open Document Spreadsheet
  //format=zip        //html zipped          
  
  //CSV,TSV OPTIONS***********
  //format=csv        // comma seperated values
  //             tsv        // tab seperated values
  //gid=sheetId             // the sheetID you want to export, The first sheet will be 0. others will have a uniqe ID
  
  // PDF OPTIONS****************
  //format=pdf     
  //size=0,1,2..10             paper size. 0=letter, 1=tabloid, 2=Legal, 3=statement, 4=executive, 5=folio, 6=A3, 7=A4, 8=A5, 9=B4, 10=B5  
  //fzr=true/false             repeat row headers
  //portrait=true/false        false =  landscape
  //fitw=true/false            fit window or actual size
  //gridlines=true/false
  //printtitle=true/false
  //pagenum=CENTER/UNDEFINED      CENTER = show page numbers / UNDEFINED = do not show
  //attachment = true/false      dunno? Leave this as true
  //gid=sheetId                 Sheet Id if you want a specific sheet. The first sheet will be 0. others will have a uniqe ID. 
                               // Leave this off for all sheets. 
  // EXPORT RANGE OPTIONS FOR PDF
  //need all the below to export a range
  //gid=sheetId                must be included. The first sheet will be 0. others will have a uniqe ID
  //ir=false                   seems to be always false
  //ic=false                   same as ir
  //r1=Start Row number - 1        row 1 would be 0 , row 15 wold be 14
  //c1=Start Column number - 1     column 1 would be 0, column 8 would be 7   
  //r2=End Row number
  //c2=End Column number
 
  var ssID = "12g8-tcRwFkcL7El...XdQAzSR7v8-geIR6r-IY";
  var url = "https://docs.google.com/spreadsheets/d/"+ssID+"/export"+
                                                        "?format=pdf&"+
                                                        "size=0&"+
                                                        "fzr=true&"+
                                                        "portrait=false&"+
                                                        "fitw=true&"+
                                                        "gridlines=false&"+
                                                        "printtitle=true&"+
                                                        "sheetnames=true&"+
                                                        "pagenum=CENTER&"+
                                                        "attachment=true";
                                                        
  var params = {method:"GET",headers:{"authorization":"Bearer "+ ScriptApp.getOAuthToken()}};
  
  var response = UrlFetchApp.fetch(url, params).getBlob();
  // save to drive
  DriveApp.createFile(response);
  
  //or send as email
  /*
  MailApp.sendEmail(email, subject, body, {
        attachments: [{
            fileName: "TPS REPORT" + ".pdf",
            content: response.getBytes(),
            mimeType: "application/pdf"
        }]
    });};
  */
  
}