CPK Viewer

CPK Viewer provides rapid, schematic rendering of molecular structures using the classic CPK color scheme. It accepts SMILES strings or Molfiles and returns a stylized image suitable for teaching, documentation, or quick assessments. It does not perform quantum calculations; it focuses on visual accuracy and data export.

Conceptually, the tool parses the input into a bond graph, assigns bonds and valency, places approximate 3D coordinates, and then renders atoms as colored spheres with bonds as lines. Rendering styles include ball-and-stick and space-filling; users can switch styles to emphasize topology or atomic size. Atom coordinates, bond orders, and rendering parameters are exposed for downstream use.

Audience benefits include students needing clear visuals for assignments, researchers preparing figures for papers, and educators creating teaching slides. The tool emphasizes speed, simplicity, and interoperability, enabling image export in SVG or PNG and data export for analysis.

Unique value includes support for multiple input formats, adherence to standard CPK color mapping, deterministic coordinate placement, and straightforward export options. By avoiding network dependencies, it remains suitable for offline workflows and rapid iteration.