Google is making a significant change to its search algorithm. Beginning April 21st, Google will increase the ranking of websites that are mobile-friendly.

The company says that the change will have “a significant impact” on all mobile searches in all languages worldwide, but as a result Google says that mobile users will find higher quality search results.

Google will also start to use more information from indexed apps as a factor when ranking search results for users that are signed in and have apps installed.

These changes are great for mobile users as it should help motivate those websites that still aren’t responsive to actually make changes as soon as possible. Google actually started highlighting good mobile sites in mobile search results earlier this year.

Finding more mobile-friendly search results [Google Webmaster Blog]