The programme will include thorough testing with user participants to gauge how the website performs in a live environment.
The hihostels.com website currently includes around 4,000 properties and has full booking functionality.
Laura Burton, ecommerce marketing executive at Hostelling International, said: “With over 35,000 unique visitor sessions per day on hihostels.com, it is of great importance to us to make sure that the website is as user friendly as possible.
“Working with Webcredible will give us the insight we need to continue to develop our website around the needs of our users, putting usability at the forefront of our online proposition.”
The news signals another travel client win for Webcredible following its recent work with Kuoni and PandO Cruises.