How to fix “Smart Object Must be Rasterized First” in Photoshop & Photopea

If you’re new to Pho­to­shop or Pho­to­pea, you might be per­plexed by one of the fol­low­ing errors: “smart object must be ras­ter­ized first”, “smart object must be ras­ter­ized,” or “this smart object must be ras­ter­ized before pro­ceed­ing.” Regard­less of the exact word­ing of the error, they all mean the same thing.

See below to learn why this com­mon error occurs and how to ras­ter­ize Smart Objects to fix the prob­lem and get back to editing.