https://test.mensa.no/Home/Test/en-US
The best one by appearance, not sure how statistically accurate. You must answer quickly.
https://www.freeiqtest.info
https://www.free-iqtest.net
https://www.iq-test.cc
https://iqtest.com/
Free score on the "My account" page
https://openpsychometrics.org/tests/FSIQ/
Bad test for multiple reasons, which is acknowledged by the authors.