10. This number is common for any kind of site.
If you want to increase or decrease the limit, we will tell you how.
Sign in to your dashboard first. Open Settings > Reading to find relevant settings.
Find Blog pages show at most option there.
Enter how many posts you want to display in home page. It asks for blog pages actually. But I assume, you are following default configurations to publish posts and not using a custom static page as home.
If you have any sticky posts, their numbers won’t be counted in overall front page contents. Suppose you are entered 7 in the above field and have two sticky posts, then 7+2 =9. Your front page will show 9 posts in total.
Save changes. This setting is applicable to the homepage only. What will you do to customize post numbers in parts of the site including category, tags, archive, author pages?
There is a cool plugin called Custom Posts Per Page and I was using it for a long time to manage post numbers in other pages. It allows us to define post numbers in all pages of a WordPress site.
It is an open source tool but hasn’t been updated in last 2 years. I think the developer is no longer maintaining the plugin and searched for alternatives. But nothing found till now. If you are familiar with any such tools, let us know through comments.