Run cdxmorph in your browser

or drop one here — ChemDraw → File → Save As → ChemDraw XML

Already have a mapping? Drop its .json in as well, together with the structure or after it, and it is used as saved.

Python starts when you pick a file. The first run downloads the runtime and the scientific libraries (tens of megabytes, once — your browser keeps them after that).

What this file holds

Animation

What to animate

Seconds

Frames per second

Width in pixels

Hold, seconds

Output

play forward then back, so it loops without a jump

MP4 is the one thing this page cannot do — its encoder is not available in a browser. Render a GIF here, or use the download for MP4.

Run it here

What this file holds

Animation

Result