Facebook is rolling out an improved search function, allowing users to search through old posts, according to Digital Spy.

Previously, if you were trying to find a post on the social network, you would have to remember where you saw it and fish it out through friends' Timelines or go on the hunt through pages.

The feature comes after high demand and feedback on the Graph Search beta.

With this update, users can quickly and easily type in a few keywords to search for old posts.

The function does not search all Facebook posts, however, only those that have been shared with you.

Post searching is only available to U.S. users on iPhone and desktop for the moment, although the social network says search is a "long-term effort".