Freedom251 › 3D modeling software
Polygonal
What Polygonal is
Polygonal is a free browser-based editor for polygon surface meshes, with no signup or subscription required. It imports and exports STL, OBJ, and OFF files, including formats used for 3D-print exports. Editing tools include vertex selection, lasso and polygon selection, moving selections, deleting vertices, and splitting or flipping edges. Mesh operations include triangulation, subdivision, remeshing, decimation, smoothing, and hole filling. Curvature-adaptive remeshing changes triangle sizing according to surface curvature, while uniform remeshing aims for evenly sized triangles. Subdivision options include Loop, Quad-Triangle, and Catmull-Clark; Loop requires triangle meshes, while Catmull-Clark works with general polygon meshes. The smoothing filter uses Laplacian smoothing with different weighting and calculation schemes. Hole filling handles simple boundary loops, but not loops with non-manifold vertices. Polygonal supports 2-manifold surface meshes with defined connectivity and does not support non-manifold meshes; remeshing and decimation require triangles. Files stay on the user's computer, and the app can be used offline after loading. It runs on desktops, tablets, and phones, with desktops and laptops best supported.
Who it suits
Polygonal suits people editing polygon surface meshes in a browser, especially those working with supported 2-manifold meshes. It may fit users who want local file handling, offline use after loading, and STL, OBJ, or OFF import and export.
What it does well
- Free to use without signup or subscription.
- Imports and exports STL, OBJ, and OFF.
- Files remain on the user's computer.
- Can be used offline after loading.
- Runs on desktops, tablets, and phones.
What to know first
- Does not support non-manifold meshes.
- Remeshing and decimation require triangle meshes.
- Hole filling excludes loops with non-manifold vertices.
- Desktops and laptops are best supported.
Verdict
Polygonal offers mesh editing and processing in a browser, with local file handling and offline use after loading. Check mesh compatibility first: non-manifold meshes are unsupported, and remeshing and decimation need triangles.
Facts from Polygonal's own pages
- Access
- The site says no signup and no subscription are required. · polygonal.app, 12 Oct 2026
- Adaptive remeshing
- Adaptive remeshing adjusts triangle sizing based on curvature, while uniform remeshing targets uniformly sized triangles. · polygonal.app, 12 Oct 2026
- Contact and support
- The maker invites feedback by email at [email protected]. · polygonal.app, 12 Oct 2026
- Data handling
- The documentation says files stay on the user's computer and do not leave it. · polygonal.app, 12 Oct 2026
- Device support
- The app can run on desktops, tablets, and phones; desktops and laptops are best supported. · polygonal.app, 12 Oct 2026
- Editing and selection
- The docs describe vertex selection, lasso and polygon selection, moving selections, deleting vertices, and splitting or flipping edges. · polygonal.app, 12 Oct 2026
- Feature limitation
- Remeshing and decimation require a triangle mesh, so polygon meshes may need triangulation first. · polygonal.app, 12 Oct 2026
- Feature preservation
- Detected sharp feature edges can be preserved during remeshing, decimation, and the Catmull-Clark and Loop subdivision schemes. · polygonal.app, 12 Oct 2026
- File formats
- Polygonal supports importing and exporting STL, OBJ, and OFF mesh files. · polygonal.app, 12 Oct 2026
- Free plan
- Yes · polygonal.app, 22 Sept 2026
- Hole filling
- The hole-filling filter repairs simple boundary loops, but does not support loops with non-manifold vertices. · polygonal.app, 12 Oct 2026
- Local data and offline use
- The documentation says files stay on the user's computer and that the app can be used offline after it loads. · polygonal.app, 12 Oct 2026
- Maker and company details
- The pages opened identify the product as Polygonal and provide an email contact, but do not state a maker organization, headquarters, or founding year. · polygonal.app, 12 Oct 2026
- Mesh compatibility
- Polygonal supports 2-manifold surface meshes with well-defined connectivity, but not non-manifold meshes. · polygonal.app, 12 Oct 2026
- Mesh editing
- Features include feature preservation, mesh decimation, hole filling, and smoothing. · polygonal.app, 12 Oct 2026
- Mesh limits
- Polygonal supports 2-manifold surface meshes with defined connectivity and does not support non-manifold meshes; remeshing and decimation require triangle meshes. · polygonal.app, 12 Oct 2026
- Mesh operations
- It supports triangulation, subdivision, remeshing, decimation, and importing and exporting STL, OBJ, and OFF files. · polygonal.app, 12 Oct 2026
- Offline use
- After loading, the application can be used offline. · polygonal.app, 12 Oct 2026
- Other operations
- The documentation lists triangulation and surface refinement using subdivision. · polygonal.app, 12 Oct 2026
- Platform access
- browser · polygonal.app, 22 Sept 2026
- Pricing
- The maker says Polygonal has no signup and no subscription. · polygonal.app, 12 Oct 2026
- 3D print export
- Yes · polygonal.app, 22 Sept 2026
- Product
- Polygonal is a web-based editor for polygon surface meshes. · polygonal.app, 12 Oct 2026
- Remeshing
- Curvature-adaptive remeshing adjusts mesh density while maintaining important surface details. · polygonal.app, 12 Oct 2026
Where Polygonal stands on Freedom251
- 3D modeling software#100 of 147