Layout boundary
Draw straight lines, arcs, and open Bézier curves (amber) to define the sheet or room outline. Snap endpoints to close corners; the packer flattens curves and auto-closes gaps when possible.
Nesting & layout in the browser
Pack irregular shapes. Keep every inch.
For shops and teams that nest, cut, print, or install inside real boundaries—sheet metal, plywood, vinyl, fabric, or floor plans. Draw, trace from photos, auto-fit, print at scale, export STEP.
Trace → PackImage silhouettes to geometry
Auto + manualLock parts, set priority
STEP outCAD/CAM ready (paid)
Real layout: CNC remnant sheet with auto-packed parts
Laser & CNC
Sign & vinyl
Marine canvas
Cabinet shops
Print & labels
Textile
Tile & stone
Trade shows
Warehouses
Interiors
Yard & garden1 / 3
Complete feature set
Everything in the app today—draw boundaries, pack irregular items, refine by hand, then print or export. Paid tier unlocks Print, Download, and STEP (marked below).
Irregular item shapes
Place rectangles, circles, arcs, polygons, Bézier curves, and standalone image items (green)—everything the packer treats as geometry with rotation and clearance.
Automatic nesting
Repack current items inside the closed boundary with a Rust-powered search. Set max seconds or run to completion; cancel anytime and keep the best layout found.
Manual & auto placement
Drag an item fully inside the layout and it locks to manual automatically—or set Mode yourself. Auto pieces repack; manual pieces stay put. Mix both in one job.
Fit priority & clearance
Per-item priority, stay-clear spacing, adjacency to another item #, and limits on items between—so pairs stay together and kerf rules are respected.
Image silhouette trace
On image items, one-click trace turns PNG/JPEG footprints into packable polygons (ideal with transparency; JPEG uses edge detection). Traced geometry exports in STEP.
Image fill
Assign photos to any shape outline for visualization—cover/contain, pan/zoom inside the element. Decorative only; not included in STEP export.
Custom names & badges
Rename items (up to 20 characters), drag labels on canvas, and see names in the item list, printouts, and STEP metadata. Numeric # ids stay for adjacency.
Selection & groups
Multi-select, box select, rotate with pivot, join endpoints, group/ungroup/nest groups, duplicate with qty, and on-shape dimension labels per shape type.
Undo / redo
Step backward and forward through edits (keyboard shortcuts supported) while you iterate on a layout.
Units & scale
Work in mm, cm, inches, or feet for dimensions and for real-world print scale on the shop floor.
Save & open designs
Open and Save .fitshapes.json locally—full design, images, and viewport. Samples menu downloads demo jobs; New clears the canvas.
Print layoutPaid
Print a scale-accurate page with grid, scale bar, item badges, and a placement table (name/#, type, X, Y).
Download HTMLPaid
Export a self-contained offline HTML file of the layout for archive or print without the live app.
STEP import & exportPaid
Exchange flat XY CAD geometry in the browser—import replace/merge, export layout/items/overflow independently. Lines, arcs, circles, rects, polylines, Bézier, and traced footprints round-trip.
Accounts
Guest or free account: draw, pack, and save local files. Upgrade for Print, Download, and STEP; billing via secure checkout.
Canvas navigation
Zoom buttons, typed zoom %, scroll-wheel zoom, Pan tool, right-drag pan, pinch/zoom and two-finger pan on mobile.
Random item generator
Create or refresh batches of random test shapes with optional seed—useful for benchmarking pack quality and demos.
Designer tools & panels
Left toolbar tools (number keys in parentheses). Click once for one shape, double-click a draw tool to stay active (● sticky mode).
| Tool | Key | What it does |
|---|---|---|
| General | ||
| Select | 1 | Select, move, box-select, multi-select (Ctrl/Shift+click). Click empty space to deselect. |
| Pan | 2 | Drag to move the canvas view. Right-drag pans in any tool. |
| Layout boundary (amber) | ||
| Line | 3 | Click-drag a straight boundary segment. |
| Arc | — | Click-drag endpoints, then adjust curvature with the midpoint handle. |
| Curve | — | Open Bézier: click anchors, double-click or Enter to finish a boundary segment. |
| Item shapes (green) | ||
| Rect | 4 | Click-drag a rectangular item to pack. |
| Circle | 5 | Click center, drag radius; resize later via handles. |
| Arc | 6 | Curved item segment with adjustable sweep. |
| Polygon | 7 | Click vertices; close on first point, double-click, or Enter. |
| Bezier | 8 | Smooth curve through anchors; double-click anchor/segment to remove or insert points. |
| Image | 9 | Click to pick a file; image placed as a packable item (trace optional). |
On-canvas controls
- Endpoint handles — drag to reshape; snap to nearby endpoints with a green join preview.
- i badge — opens floating properties (Dim · Fit · Image · Layout tabs). Click the name to rename.
- Rotation bar — ↺, degrees, ↻, pivot X/Y when a rotatable item or group is selected.
- Selection actions — Join points, Group, Ungroup, Delete on the canvas action bar.
- Dimension labels — on-shape readouts for lines, rects, circles, polygons, and segments (respects unit setting).
Packer panel (right)
- Repack current items — re-arrange only; nothing added or removed.
- Create new items / Refresh — random shape generator for tests.
- Max sec — time cap, or empty for exhaustive search.
- Rotation step° — finer steps = more orientations tried (1° = max quality).
- All items list — #, custom name, priority, type, size; overflow vs placed status.
Header & file menu
- Open / Save / Save As / New — local
.fitshapes.jsonworkflow. - Units — mm, cm, in, ft.
- Undo / Redo — edit history.
- Import STEP / Export STEP — paid, processed locally.
- Print / Download — paid shop-floor and offline outputs.
- Help — full in-app manual mirrors this reference.
Built for material—and space—constrained work
Any business that manually nests or lays out irregular shapes in a bounded area. These teams tend to convert fastest.
CNC, laser & waterjet
High intentDefine the sheet, nest parts for yield, control kerf spacing, export packed geometry to STEP for CAM.
Sign & vinyl shops
High intentLetters, logos, and decals on rolls—less waste, spacing preserved, priorities honored.
Marine canvas
High intentCovers, cushions, enclosures on costly fabric—full-scale print guides before cutting.
Woodworking & cabinets
High intentPanels and templates on plywood—auto layout, manual tweaks, then CNC.
Print & large format
High intentNest stickers, labels, and die-cut shapes on media to protect margins.
Textile & upholstery
Trace patterns, compare fabric layouts without enterprise nesting suites.
Tile, stone & counters
Room and slab outlines—visualize cuts and remnant use before install.
Events & trade shows
Booths, furniture, and gear in hall footprints with clearance zones.
Warehouses & storage
Floor layouts for pallets, aisles, and equipment—dense auto pack, human refinement.
Architecture & interiors
Quick furniture and fixture studies in irregular rooms before full BIM.
Backyard & garden design
Plot yard boundaries, patios, beds, and outdoor zones—scale plans before hardscape and planting.
What AutoFitShapes does
Plain-language summary for search and discovery.
AutoFitShapes is web-based software that automatically packs, nests, and arranges irregular shapes inside user-defined boundaries. Typical applications include CNC manufacturing, laser cutting, waterjet cutting, woodworking, sign and vinyl production, commercial printing, textile and upholstery cutting, marine canvas, tile and countertop layout, warehouse planning, trade-show floor planning, interior space layout, and backyard or garden design.
Users draw or import geometry—including polygons, arcs, Bézier curves, circles, and traced image footprints—set layout boundaries and clearance, run automatic packing with optional priorities and adjacency rules, manually adjust results, print layouts at real-world scale, and export STEP files for downstream CAD/CAM. The product runs in a web browser at fitshapes.isore.app.
Questions
What is nesting software?
Software that places parts inside a sheet or boundary so you use less material and fit more per cut or print run.
Can it handle irregular shapes?
Yes—polygons, curves, arcs, circles, and traced images pack together inside your layout boundary.
Any install?
No. Use a modern browser; save to your account or locally depending on plan.
STEP export?
Included on paid plans for shops feeding CAD, laser, or CNC workflows.
Try the next layout in minutes
Import or draw shapes, nest automatically, reduce waste—print and STEP when your shop needs them.
Go to fitshapes.isore.app