Turn STL models into multi-view preview images with dimension labels, so you can show the print before you make it.
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STL files carry no color, so the model appears with default shading. Use the preview shots for print check, documentation, and sharing. Orthographic views plus dimension annotations work best for technical presentations.
DefaultHorizontal four-up
Choose multi-view arrangement: horizontal four-up, vertical four-up, or a custom set of views and columns.
Front, right, top and perspective in one row (1×4).
Front, right, top and perspective in one column (4×1).
Pick views and column count for a custom grid.
When using custom layout, choose which camera directions to include.
Default3
Range1 – 5
Number of columns in the custom grid (1-5, capped by selected view count).
Default0.012
Range0 – 0.1 · step 0.005
Outer margin around the board as a fraction of the short edge.
Default0.012
Range0 – 0.05 · step 0.002
Spacing between viewports as a fraction of the short edge.
Default#ffffff
Fill color for the margin area; transparent is allowed (falls back to white for JPG).
Default#f5f5f5
Background for each 3D viewport; pick a color or transparent (alpha kept for PNG/WebP).
DefaultOff
Display bounding box dimensions in the selected unit.
Defaultmm
Unit
DefaultOn
Show Watermark
Defaultany3d.cc
Watermark title text (default any3d.cc).
PNG, JPG, WebP or SVG up to 5MB; auto-resized for watermark
DefaultBottom-left
Corner placement of the watermark on the board.
Default0.08
Range0.04 – 0.3 · step 0.005
Watermark size as a fraction of the board short edge (~0.04-0.3).
Default0.8
Range0.2 – 1 · step 0.05
Watermark opacity (0.2-1).
DefaultPNG
Image Format
Default1x
Resolution Scale
Drag and drop your STL file into the upload area, or click to browse
Choose landscape, portrait, or custom layout. Toggle dimension annotations, units, and watermark
Download PNG, JPG, or WebP images at 1x, 2x, or 4x resolution
No. An STL stores only triangle mesh geometry, without color or materials, so the preview always uses default shading. You can adjust lighting and background to improve contrast, but the tool cannot recreate textures that are not in the file.
Yes. Multi-view layouts such as front, side, and top plus dimension labels help you check the shape, orientation, and bounding size. Before you print, still confirm wall thickness, supports, and placement in your slicer.
Switch between millimeters, centimeters, meters, and inches. The labels show the model's bounding-box size and are for display only, so the STL geometry itself is never modified.
Large meshes depend on your device performance. If the preview slows down, simplify the mesh first or lower the export scale. Everything stays in your browser, so no data is uploaded.
Black areas usually mean the normals are inverted: those faces point inward, so front-side rendering hides them. Run the Fix Normals tool on the model, then re-upload and capture the image again.
STL stores raw numbers without units, so the label assumes 1 unit equals 1 millimeter. If your model was made in inches, the displayed size is off by a factor of 25.4. Rescale the model so 1 unit equals 1 mm before rendering.
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