Ad-free STL Viewer

Open a 3D model and understand it before you print. Ad-free STL Viewer combines a fast mobile model viewer with practical checks for 3D printing. Inspect the real mesh, keep supported materials and textures, measure exact points, examine cross-sections and create a focused PDF report for review or repair. PRINT CHECK • Check open, invalid and reversed faces • Find non-manifold edges and surface intersections • Highlight thin walls, branches, narrow holes and gaps • Compare the model with your configured printer volume • Review grouped issue regions with focused camera views INSPECT AND PREPARE • Measure between real mesh vertices with precise point snapping • View cross-sections along the X, Y or Z axis • Compare automatic orientations for stable contact or lower print height • Switch between flat polygons, smooth shading and wireframe • Preserve supported original colors, materials and textures SHARE RESULTS • Create a zoomable PDF report • Include up to six focused issue views • Share the report or save it to Files • Export an STL copy after supported scale or orientation changes 18 SUPPORTED FORMATS STL, OBJ, 3MF, PLY, 3DS, FBX, ASE, DXF, glTF, GLB, DAE, ABC, SCN, USD, USDZ, USDC, USDA and STEP/STP. Try ten model opens for free. Unlock unlimited use with one purchase. No ads and no subscription. Print Check provides general geometric guidance. Final printability also depends on the material, printer, slicer profile and process settings.