To import multiple posts in one time in WordPress you can use the WordPress CSV importer. This is the best free .csv importer for WordPress. You simply make a .csv file and make a list of post names with at the top of the row: “csv_post_title” so WordPress recognizes which title must use for the post. You can specify post information by extra rows like: “csv_post_post and” “csv_post_categories”. For all information tags visit the “other notes” of the plugin page.