Changing Post Tiles Heading Tags In Blogger

To change post titles default H3 tag to H2 heading Tag then follow the steps below,

1. Go To Blogger> Design > Edit HTML
2. Backup your template
3. Search for .post h3
4. and replace it with .post h2  (keep replacing that for all occurrences of .post h2)
5. Then search for,
   <h3><data:title/></h3
6. and replace it with this,
   <h2><data:title/></h2>
7. Save your template and Congratulations for the smart change!