Start with a file
Paste or drop a Lottie JSON on the left. The probe runs immediately, in your browser, on any file — no account, no credits, nothing uploaded.
It tells you which of the six shipping Lottie runtimes will actually draw what you have, what the file really weighs after gzip, and whether it carries any of the defects that make a Lottie render blank.
The three metered lanes turn that into a compatibility report, a weight-reduction plan, or the embed code for your stack. Each one ships a free worked example you can replay without spending anything.