Open tab if URL ending by .html

Your URLs shouldn’t end in .html if you are using WordPress. Are you trying to access a page outside of WordPress? If so this plugin will not work.

For SEO optimization in WP my permalinks set as /%postname%.html
All posts and pages ending at .html
It’s not plugin, it’s standard WP setting.

Having .html in your URLs won’t help with SEO. See this article.

That said, this plugin should still work with .html at the end of your URL. Not sure what the issue is here. Can you provide a link for me to take a look?

https://www.tmtconferences.ru/vpn-russia-2015.html

Also inside page we see autogenerated anchors

<ul class="tabs-shortcode-list">
<li  ><a href="#-0">Инфо</a>
<li  ><a href="#-1">Регистрация</a>
<li  ><a href="#-2">Программа</a>
<li  ><a href="#-3">Докладчики</a>
<li  ><a href="#-4">Контакты</a>
<li  ><a href="#-5">Место проведения</a>

But https://www.tmtconferences.ru/vpn-russia-2015.html#-3 dont work.

It looks like you aren’t not actually using my plugin. From what I can tell you’re using the Tabs Shortcode plugin.

Opps. Sorry. Using the same name plugin by other author. Sorry.