Hi Silviu,
Thanks for contacting Syncfusion support.
We have prepared a sample demo about maximize property in below JS Playground link. Kindly have a look on this.
https://jsplayground.syncfusion.com/e3zbr5j1 If you want to know more about API’s available in dialog, please go through the following document available in below link:
https://help.syncfusion.com/js/api/ejdialog Please let me know if any concerns.
Regards,
Gurunathan