Allows you to auto-submit a form when the page loads, with a 1/2 second delay. Full tutorial here: https://gravityranger.com/auto-submit-form-page-load/

form-auto-submit.js

/**
* GravityRanger Auto-Submit Form on Page Load
*
* Allows you to auto-submit a form when the page loads, with a 1/2 second delay.
* https://gravityranger.com/auto-submit-form-page-load/
* 
* @instructions:
* 
*  1. Change gform_ID# to your forms ID number (line 24)
*  2. Set the amount of time you'd like to delay the script (line 27)
*  3. Add the scipt to an HTML field within your form
* 
* @version  1.0
* @author   GravityRanger
* @license  GPL-2.0+
* @link     http://gravityranger.com/
*
*
*/

<script type="text/javascript">
setTimeout(function(){
jQuery(document).ready(function(){
    jQuery('form#gform_ID#').trigger('submit'); //change ID to your forms ID# number
});

}, 500); //seconds before submit (1000 = 1 second)

</script>