Question

We wrote Portal with ASP.NET. But it has many Javascripts and our pages loading slow.
In some page , page size is amount 1.5 mb!
What is the best way to reduce or compress page size to make it faster?
Thanks

Answer 1

Several things:

1. Minimize your javascript and CSS files. Google has a nice minimizer for JS.
2. Cache images, js files and css files. Info on how to do this from IIS, here.
3. Disable ViewState if you can or at least enable it only on the controls that need it.
4. Use compression on IIS
5. Use a content delivery network (CDN) to deliver javascript libraries such as jQuery, etc.
6. Optimize your images using Smush.it
7. Put javascript code at the bottom of the page so that the page starts rendering faster
8. If you use JSON for data interchange between the UI and the backend, make sure you compress it, too.
9. Use sprite me to create sprites for your image icons, backgrounds, etc.