Having access to a free reporting tool like Lighthouse in DevTools is a great start for diagnosing performance issues by identifying bottlenecks on the main thread. Even better are paid tools like [SpeedCurve](https://www.speedcurve.com/?utm source=smashingmag&utm medium=magazine&utm campaign=sm7 2023&utm id=sm7 2023&utm term=sm7 2023) to dig deeper into the data for more targeted insights and to produce visual reports to help make a case for performance improvements for your team and other stakeholders.
Let’s make 2021… fast! An annual front-end performance checklist (available as PDF, Apple Pages, MS Word), with everything you need to know to create fast experiences on the web today, from metrics to tooling and front-end techniques. Updated since 2016. Ah, you can also get useful front-end tips in our email newsletter. This guide has been kindly supported by our friends at LogRocket, a service that combines
frontend performance monitoring, session replay, and product analytics to help you build better customer experiences.
LogRocket tracks key metrics, incl. DOM complete, time to first byte, first input delay, client CPU and memory usage. Get a free trial of LogRocket today.