I don't post new pages to my website. I ftp them. And before I do that I check if they show as I want on my PC (the website is a copy of a folder on my PC). Then after ftp'ing I check if they show as I want on the website.
But it might be different if you have a CMS. Then it doesn't run on your PC.
What is your own checklist right after posting a new page to your website?