In the world of web development 
PSD to HTML  has become one of the standard ways of achieving unique and robust  websites. Here the website is designed in Photoshop which is the best  design platform in the world and then converted into HTML or XHTML as  PSD files aren’t web compatible. In this process you need to convert PSD  to HTML and PSD to CSS to achieve a fully functional website. These  files can then be integrated into a content management system of your  choice such as WordPress, Joomla or Drupal among others.
To get  the best out of this development technique you need to opt for the best  conversion process and this is manual conversion or hand coding the  website from PSD to HTML. There are a lot of applications and WYSIWYG  editors which let you convert the PSD website into the markup language  but when it comes to the performance of such website on the search  engines and the web browsers they tend to fair poorly. Let us now  analyze the reasons why manual coding is considered the best idea to  convert PSD to HTML.
Clean Codes – When you convert 
PSD to XHTML/HTML  manually you are rest assured that the code will be clean. Your codes  won’t have any bugs and errors which often tend to hurt the performance  of a website. This ensures that your website will attract the search  engine crawlers and help you rank high on the search engine results  pages.
Pixel Perfect Conversion –  Achieving a pixel perfect website (where the final website matches the  image to the last pixel) is one of the main reasons behind converting  PSD files into a markup. Manual conversion ensures you achieve a pixel  perfect website where as in case of WYSIWYG editors the final website  may be significantly different from the PSD image.
W3C Validation –  A good website needs to pass through W3C validation which validates the  structure of the website and also checks for errors in the codes. A  website which is manually converted would make the cut whereas software  generated codes in most cases fail this validation test and loose out  the competitive edge.
Customizable –  When you opt for manual coding you can easily customize the codes as  and when your business requirement arises. Or in other words such form  of coding is highly customizable. Auto generated codes are nothing but a  maze where it is extremely difficult to tweak the codes.
All  these are significant factors when it comes to performance of a website.  Thus you need to hand code the website to gain true mileage out of a  PSD to HTML and 
PSD to CSS website. Using software is as good as opting for a free template in the first place.