Image hover effect plugin have a functionality to apply Scalable/Texts hover effects. Follow Below steps to apply text effects on posts, pages and custom post type :
Step 1Go to Effects Gallery page of the plugin.
Step 2click on Apply Here link in Text effects.
text-effect-apply
Step 3Select post types for which you want to apply this effect and click on Save Settings.
quick-effects
Step 4Then go to General setting page and scroll down to any post types where you applied hover effects.
Step 5Applied the Image hover effect contents.You can use your own html.Click on Get deafult marker for current effect to get suitable markup according to current hover effect type
post-back-text-effects
Step 6 At the end scroll down to the page and click on Save Settings button to apply changes.
Now you’ll see Text hover effect applied to your post image.
text-hover-effets

Video Tutorial