How do I prevent iOS from converting HTML files to video view and open them in Safari?

I have been using Textastic to create my webpages and noticed i cannot opened HTML files in safari directly, over the last couple of days apple iOS converted all my HTML files in cloud or local to video view while they are still HTML file, in open with it only shows my printer option. Where can i change to view in Safari or another browser?

[Re-Titled by Moderator]