You can get Devanagari characters in your HTML source by not using HTML entities when creating the file. The following lines are equivalent.
<p>अ आ इ ई</p>
<p>अ आ इ ई</p>
If you are generating your HTML from a database, you might be applying an HTML entity conversion function at the time of generating the markup (such as htmlentities()
in PHP). You'll have to remove that function call or apply it selectively.