About
Molkit is a browser-based tool for drawing chemistry structures, reaction mechanisms, and animations. It runs client-side in your browser, so your documents are not uploaded or processed on a server. Name lookups send the selected structure’s SMILES string to PubChem (see PubChem Integration). You draw on a canvas, export to SVG, PNG, or PDF, and save your work as a .mkit file. The editor is at https://molkit.com/, and this documentation lives at https://docs.molkit.com/.
What is Molkit
Molkit covers structure drawing (bonds, rings, projections, shapes, arrows, and text), reaction mechanisms, and an animation engine that can export animated SVG and video. It supports multiple tabs, undo and redo, structure presets, element color schemes, and font embedding for exports. Files are saved in the .mkit format.
Version
The current release is 0.27.0, dated 2026-10-15. To confirm the version you are running and read the release history, open the Help menu in the editor and choose “What’s New”.
License
Molkit is proprietary software. All rights reserved.
Credits
The mobile-safe SVG export option embeds subsets of Liberation Sans, Liberation Serif and Liberation Mono, metric-compatible substitutes for Arial, Times and Courier, which are licensed under the SIL Open Font License 1.1. Their full license notice, and those of the other third-party components, are listed under Help > Open-Source Licenses in the editor.