Open a file
Drop a PDB, mmCIF, SDF, MOL, MOL2 or XYZ file onto the viewer, or try a sample molecule.
WAVESPEED AI MOLECULE VIEWER Structures stay on your device
100% FREE
Free 3D Molecule ViewerRotate, colour, measure.
Open small molecules and proteins in 3D, switch between ball and stick, space-filling and cartoon, and add a surface.
Measure distances, angles and dihedrals, or build a 3D model from a 2D drawing.
PDB · mmCIF · SDF · MOL2 · XYZMeasure in Å and degreesFiles stay on your device
No sign-up No upload Nothing to install
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Drawings and files are processed in your browser and never uploaded.The chemistry engine downloads once (about 3 MB) and is then cached.
THREE SIMPLE STEPS
How to use the Molecule Viewer
Style and explore
Choose a style and colouring, turn on the surface or labels, and rotate, zoom and click atoms or residues.
Measure and save
Pick atoms to measure distances, angles and dihedrals, then save a PNG image.
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Make visuals for your chemistry.
Turn molecules into illustrations, cover art and explainer clips for slides, papers and lessons with WaveSpeed AI.
Image Generator
Create journal-cover style art and lab illustrations from a description.
Video Generator
Animate an illustration into a short explainer clip.
3D Generator
Make a 3D model of lab equipment or a stylised molecule.
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$1 in free credits for eligible new accounts. No card needed. Generators have separate account and credit requirements. The structure drawer is free.
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Molecule Viewer FAQ
Is this molecule viewer free?
Yes, with no account and no limits beyond your device's memory.
Are my files uploaded?
No. Files are read in your browser; only the viewer's code is downloaded from a public code library.
Can I make a 3D model from a drawing?
Yes. Draw the molecule or paste a SMILES in the 2D tab and choose View in 3D; the model keeps the drawing's stereochemistry and is relaxed with the MMFF94 force field.
Which styles are available?
Ball and stick, sticks, space-filling and wireframe for any structure, plus cartoon for proteins and nucleic acids, with colouring by element, chain, residue, secondary structure, B-factor or sequence position.
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PDB · mmCIF · SDF · MOL2 · XYZ · Measure in Å and degrees · Files stay on your device