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Open a model to convert, repair, or check it for printing—without sending a byte anywhere.

54 tools

Convert between mesh formats, or tessellate STEP / IGES / BREP into a mesh.

STEP / IGES / BREP to mesh (local)

Convert STEP, IGES or BREP to STL, OBJ, PLY, 3MF, GLB or glTF locally with OCCT WASM, export a GLB assembly with hierarchy and face colors, or package STL parts as a ZIP. Tessellate CAD in the browser without uploading.

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Mesh ↔ meshReady

STL to OBJ converter (local)

Convert STL to OBJ locally in your browser. Streamed binary STL, welded vertices, indexed OBJ output, and no uploads.

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Mesh ↔ meshReady

OBJ to STL converter (local)

Convert OBJ to binary STL locally in your browser. Streamed OBJ parsing, polygon triangulation, cancellable Worker, no uploads.

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Mesh ↔ meshReady

STL to PLY converter (local)

Convert STL to PLY locally in your browser. Streamed binary STL, welded vertices, binary PLY output, and no uploads.

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Mesh ↔ meshReady

OBJ to PLY converter (local)

Convert OBJ to PLY locally in your browser. Streamed OBJ parsing, polygon triangulation, binary PLY output, no uploads.

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Mesh ↔ meshReady

PLY to STL converter (local)

Convert PLY to binary STL locally in your browser. ASCII and binary PLY, polygon triangulation, cancellable Worker, no uploads.

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Mesh ↔ meshReady

PLY to OBJ converter (local)

Convert PLY to OBJ locally in your browser. ASCII and binary PLY parsing, polygon triangulation, indexed OBJ output, no uploads.

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Mesh ↔ meshReady

STL to GLB converter (local)

Convert STL to GLB locally in your browser. Streamed STL, welded vertices, single-mesh glTF binary output, no uploads.

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Mesh ↔ meshReady

OBJ to GLB converter (local)

Convert OBJ to GLB locally in your browser. Streamed OBJ parsing, polygon triangulation, single-mesh glTF binary, no uploads.

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Mesh ↔ meshReady

PLY to GLB converter (local)

Convert PLY to GLB locally in your browser. ASCII and binary PLY, polygon triangulation, single-mesh glTF binary, no uploads.

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Mesh ↔ meshReady

GLB to STL converter (local)

Convert GLB to binary STL locally in your browser. GLB node transforms, triangle primitives, no uploads.

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Mesh ↔ meshReady

GLB to OBJ converter (local)

Convert GLB to OBJ locally in your browser. glTF node transforms, triangle primitives, indexed OBJ output, no uploads.

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Mesh ↔ meshReady

GLB to PLY converter (local)

Convert GLB to binary PLY locally in your browser. glTF node transforms, triangle primitives, no uploads.

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Mesh ↔ meshReady

STL to 3MF converter (local)

Convert STL to 3MF locally in your browser. Core-spec 3MF ZIP output, local assembly, no uploads.

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Mesh ↔ meshReady

OBJ to 3MF converter (local)

Convert OBJ to 3MF locally in your browser. Core-spec 3MF ZIP output, local assembly, no uploads.

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Mesh ↔ meshReady

PLY to 3MF converter (local)

Convert PLY to 3MF locally in your browser. Core-spec 3MF ZIP output, local assembly, no uploads.

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Mesh ↔ meshReady

GLB to 3MF converter (local)

Convert GLB to 3MF locally in your browser. Core-spec 3MF ZIP output, local assembly, no uploads.

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Mesh ↔ meshReady

3MF to STL converter (local)

Convert 3MF to STL locally in your browser. 3MF ZIP/XML parsing, build transforms, unit normalization, no uploads.

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Mesh ↔ meshReady

3MF to OBJ converter (local)

Convert 3MF to OBJ locally in your browser. 3MF ZIP/XML parsing, build transforms, unit normalization, no uploads.

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Mesh ↔ meshReady

3MF to PLY converter (local)

Convert 3MF to PLY locally in your browser. 3MF ZIP/XML parsing, build transforms, unit normalization, no uploads.

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Mesh ↔ meshReady

3MF to GLB converter (local)

Convert 3MF to GLB locally in your browser. 3MF ZIP/XML parsing, build transforms, unit normalization, no uploads.

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Mesh ↔ meshReady

STL to glTF converter (local)

Convert STL to glTF locally in your browser. Self-contained glTF JSON with an embedded buffer, no uploads.

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Mesh ↔ meshReady

OBJ to glTF converter (local)

Convert OBJ to glTF locally in your browser. Self-contained glTF JSON with an embedded buffer, no uploads.

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Mesh ↔ meshReady

PLY to glTF converter (local)

Convert PLY to glTF locally in your browser. Self-contained glTF JSON with an embedded buffer, no uploads.

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Mesh ↔ meshReady

3MF to glTF converter (local)

Convert 3MF to glTF locally in your browser. Self-contained glTF JSON with an embedded buffer, no uploads.

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Mesh ↔ meshReady

GLB to glTF converter (local)

Convert GLB to glTF locally in your browser. Self-contained glTF JSON with an embedded buffer, no uploads.

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Mesh ↔ meshReady

glTF to STL converter (local)

Convert glTF to STL locally in your browser. Embedded or paired .bin glTF buffers, node transforms, triangle primitives, no uploads.

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Mesh ↔ meshReady

glTF to OBJ converter (local)

Convert glTF to OBJ locally in your browser. Embedded or paired .bin glTF buffers, node transforms, triangle primitives, no uploads.

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Mesh ↔ meshReady

glTF to PLY converter (local)

Convert glTF to PLY locally in your browser. Embedded or paired .bin glTF buffers, node transforms, triangle primitives, no uploads.

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Mesh ↔ meshReady

glTF to 3MF converter (local)

Convert glTF to 3MF locally in your browser. Embedded or paired .bin glTF buffers, node transforms, triangle primitives, no uploads.

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Mesh ↔ meshReady

glTF to GLB converter (local)

Convert glTF to GLB locally in your browser. Embedded or paired .bin glTF buffers, node transforms, triangle primitives, no uploads.

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Mesh repair

Fill holes, weld vertices, unify normals, and remove degenerate or non-manifold faces.

Explore · 9 tools

TopologyReady

Mesh weld and clean (local)

Weld vertices and remove degenerate or duplicate triangles locally in your browser. STL, OBJ, PLY, 3MF, GLB, and glTF input; binary STL output.

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TopologyReady

Fill mesh holes (local)

Fill simple mesh boundary loops locally in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output.

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TopologyReady

Mesh topology and manifold check (local)

Check mesh manifold, watertight, shells, boundary loops, Euler characteristic, genus and self-intersections locally. STL, OBJ, PLY, 3MF, GLB and glTF input; no upload.

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TopologyReady

Repair non-manifold mesh (local)

Repair non-manifold edges and bow-tie vertices in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output; no upload.

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TopologyReady

One-click mesh repair (local)

Repair STL, OBJ, PLY, 3MF, GLB or glTF meshes in your browser: weld vertices, fix non-manifold edges and bow-tie vertices, close holes, unify normals and remove self-intersections. No upload.

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TopologyReady

Merge overlapping shells (local)

Merge overlapping closed 3D shells into one watertight STL locally. Split components, check self-intersections and union with Manifold WASM; no upload.

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TopologyReady

Self-intersection repair (local)

Remove self-intersecting faces locally and safely close simple holes. Six mesh input formats, binary STL output, explicit boundary and fill reporting, no upload.

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TopologyReady

Voxel remesh (local watertight rebuild)

Voxel remesh broken or self-intersecting meshes locally into watertight binary STL. Choose 48–128 resolution, get manifold/self-intersection reports, no upload.

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NormalsReady

Unify mesh normals (local)

Unify triangle winding and fix flipped normals locally in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output.

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Slicer import fixes

When a slicer will not open a model, diagnose the file before reinstalling or re-exporting blindly. Pick your slicer for a local import check.

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Cura

Check an STL, OBJ, PLY, 3MF, GLB or glTF for corrupt headers, empty geometry, open boundaries, non-manifold edges and unit mix-ups before you blame Cura. The model stays in this tab.

Open diagnostic

Bambu Studio

Diagnose an STL or 3MF that Bambu Studio will not open: header damage, empty geometry, open boundaries, non-manifold edges and scale errors. Local analysis, no upload.

Open diagnostic

PrusaSlicer

Check why PrusaSlicer shows no layers, a tiny model or an import error. Inspect headers, empty meshes, open boundaries, non-manifold edges and units locally before re-exporting.

Open diagnostic

OrcaSlicer

If OrcaSlicer fails to load a model, check the file signature, empty geometry, open boundaries, non-manifold edges and scale before trying another download. Local diagnosis, no upload.

Open diagnostic

Transform & optimize

Scale, rotate, center, place on the bed, decimate, hollow, and split.

Explore · 5 tools

DimensionsReady

Transform and place mesh (local)

Scale, rotate, translate, center and place a 3D mesh on the bed locally in your browser. Six input formats, binary STL output.

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OptimizeReady

Split mesh into parts (local)

Split a mesh into connected parts locally in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; ZIP of binary STL parts.

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OptimizeReady

Decimate mesh (local)

Simplify a mesh locally in your browser with vertex clustering. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output.

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OptimizeReady

Boolean mesh operations (local)

Union, subtract or intersect two 3D meshes locally. STL, OBJ, PLY, 3MF, GLB or glTF input; Manifold WASM in a Worker; binary STL output; no upload.

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OptimizeReady

Hollow a 3D mesh (local)

Hollow a closed 3D mesh locally. Mitered wall-thickness offset, Manifold WASM subtraction, binary STL output; no upload. STL, OBJ, PLY, 3MF, GLB or glTF input.

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Print readiness

Wall thickness, overhang, build-volume fit, and material/time estimates.

Explore · 6 tools

ChecksReady

3D printer bed fit checker (local)

Check whether a 3D model fits your printer bed. Compare STL, OBJ, PLY, 3MF, GLB or glTF bounds with common build volumes locally, with units and clearance.

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ChecksReady

3D print overhang checker (local)

Measure 3D model overhang area locally. Check STL, OBJ, PLY, 3MF, GLB or glTF downward faces by angle from vertical, with an adjustable threshold and bed-contact exclusion.

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ChecksReady

3D print wall thickness checker (local)

Estimate 3D model wall thickness locally. Cast inward rays from STL, OBJ, PLY, 3MF, GLB or glTF triangle centroids and report thin-wall area with a threshold.

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ChecksReady

3D print readiness report (local)

Generate a local 3D print readiness report with topology, bed fit, overhang, wall thickness and filament estimates. Supports STL, OBJ, PLY, 3MF, GLB and glTF; no upload.

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ChecksReady

Batch printability check (local)

Check up to 30 3D models for printability at once: topology, wall thickness and bed fit with a target printer. Local batch analysis, CSV and PDF export, no upload.

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EstimatesReady

Filament and print cost estimator (local)

Estimate 3D print filament weight, length, material volume, cost and time locally from STL, OBJ, PLY, 3MF, GLB or glTF plus infill and wall settings.

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G-code

Layer preview, layer count, path length, and filament statistics.

Explore · 1 tool

G-code statsReady

G-code analyzer with 2D and 3D preview (local)

Analyze G-code locally with streamed 3D batches: layer count, travel and extrusion length, filament use, toolpath bounds, slicer-reported time, and 2D/3D previews. No upload.

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Inspect & measure

View the model and inspect triangles, bounds, volume, and sections.

Explore · 2 tools

ViewerReady

Local STL viewer and geometry inspector

Inspect STL files locally in your browser. Stream triangle data in a Worker, see welded vertex counts, bounds, surface area and volume, and cache a decimated preview for fast repeat opens. No upload.

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Face countsReady