Quadify is a Blender add-on for converting triangulated meshes into quad topology that is easier to edit, deform, and optimize.
Quadify appears in the Viewport sidebar (N-panel) under its own category. All operations are run directly on the active mesh or selected meshes.
If you are unsure which version of Quadify you are using, start with Quadify Tiers.
If you are using Quadify Premium or Pro, continue to the appropriate overview page.