# Adding models

Drop up to five models, or try the sample model.

Updated 1 November 2026

- [How do I add my models to a check?](https://ifcchecker.com/help/add-models/): Drop up to five IFC files on the Check page, anywhere on it, or click the mark to choose them.
- [How do I try the sample model?](https://ifcchecker.com/help/try-the-sample/): Choose Try the sample model on the Check page.
- [What if I check a model again?](https://ifcchecker.com/help/checked-before/): When you drop a model you checked before and pick the same test, IFC Checker shows the results of that earlier check at once instead of checking it a second time, and says so, with a Check again button to check it now.

[Workflows and help](https://ifcchecker.com/help/)