https://www.wpar.net/strategies-to-improve-conversion-rate/05-%d8%b5%d9%88%d8%b1%d8%a9-%d8%aa%d8%b8%d9%87%d8%b1-%d8%b9%d8%af%d8%a7%d8%af%d9%8b%d8%a7-%d8%aa%d9%86%d8%a7%d8%b2%d9%84%d9%8a%d9%8b%d9%91%d8%a7-%d9%84%d9%84%d9%88%d9%82%d8%aa-%d9%81%d9%8a-%d8%b5/