Last updated: May 2021 Table Of Contents Introduction How was it done before? 2.1. What’s Wrong With This? Marks and Measures 3.1. How to Use 3.2. Example Usage 3.3. Standard Mark Names 3.4. UserTiming Level 3 3.5. Arbitrary Timestamps 3.6. Arbitrary Metadata Benefits Developer Tools Use Cases Compressing Availability Using NavigationTiming Data Conclusion Updates Introduction […] The post UserTiming in Practice first appeared on NicJ.net.