Grid snapping and reference overlay for Unity UI. Speed up UI layout and make it clean, accurate and consistent.Snap UI like a designer, not guesswork.A compact but powerful Unity tool for grid-based UI layout. In one window you can enable snapping for any RectTransform and drop in a reference image right in the Scene view. Forget typing pixel values — just align, match canvas resolution to the reference, tweak grid size, offset or color and build your interface 1:1 with the mockup.Works entirely in editor space, doesn’t affect runtime or build size, and functions independently of Unity’s built-in Grid. Supports any canvas scale or rotation.Snapping during Move/Rect drags; prevents inverted/zero-size rectangles; Undo integrated.Axis locking: click Move gizmo X/Y arrows to constrain snapping to one axis.Canvas origin: 3×3 selector to round coordinates around a chosen point in the assigned Canvas.Grid overlay: full-screen dot grid, 1–4 px dot size, color/alpha, offset% per axis, automatic LOD with MaxDots cap.Quick step controls: ÷2 / ×2; settings persist via EditorPrefs.Reference overlay: create from Sprite/Texture; non-raycast magenta Image at 10% alpha, centered at native size; auto increases TextureImporter Max Size and uses real source dimensions.Fit to Ref: sets CanvasScaler to Scale With Screen Size and copies reference sprite size to referenceResolution.Requirements: Unity 2021.3+; uses built-in UGUI; tested in URP templates.Editor-only: operates in Scene view, ignores Alt (navigation), zero runtime footprint.Menu: Tools > Multitool > RectTransform Snapper.The asset was created primarily using Chat GPT-5 and Claude Sonet 4.5. AI was used as a tool to carry out the author's intent in the exact way the author envisioned the asset. Nearly all methods were generated and then edited multiple times during the creation process with the help of GPT-5 and Claude Sonet 4.5.The asset description was generated using Claude Sonet 4.5 and then proofread and edited by the author.
