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Squarespace Speed Optimization ](/services/squarespace-speed-optimization) [Book a Call](/contact) [Home](/) [Resources](/resources) [Glossary](/resources/glossary) Chrome DevTools Tools & Data Sources · Glossary # Chrome DevTools ![Matt Suffoletto](/assets/matt-CEkmAuBN.jpg)Written by [Matt Suffoletto](/resources/author/matt-suffoletto) Published June 26, 2026 ![Chrome DevTools](/__l5e/assets-v1/bceeb240-cc3e-4791-81fc-f93f8cda51c9/gloss-hero-chrome-devtools.png) Share 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[](https://twitter.com/intent/tweet?url=https%3A%2F%2Fwww.pagespeedmatters.com%2Fresources%2Fglossary%2Fchrome-devtools&text=Chrome%20DevTools)[](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.pagespeedmatters.com%2Fresources%2Fglossary%2Fchrome-devtools)[](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fwww.pagespeedmatters.com%2Fresources%2Fglossary%2Fchrome-devtools)[](https://www.reddit.com/submit?url=https%3A%2F%2Fwww.pagespeedmatters.com%2Fresources%2Fglossary%2Fchrome-devtools&title=Chrome%20DevTools) Speed Audit ### Find out what's slowing your website down Enter your URL and our team will send back a free, no-strings performance analysis within 24 hours. Get my audit 100% free Results in 24h ## TL;DR Chrome DevTools is the suite of debugging tools built into Google Chrome, including the Performance, Network, Coverage, and Lighthouse panels, used to inspect and profile pages. ## What is Chrome DevTools? Chrome DevTools is the suite of debugging tools built into Google Chrome, including the Performance, Network, Coverage, and Lighthouse panels, used to inspect and profile pages. Learn more in our [how to measure performance the right way](/resources/guides/ultimate-measurement-tools-data-guide) guide, or work with us through our [done-for-you speed optimization service](/services). ## How Chrome DevTools is Measured DevTools opens with F12, Ctrl+Shift+I, or Cmd+Option+I, and runs against any URL loaded in the browser. ## Related Terms [Glossary ### Google Lighthouse ](/resources/glossary/lighthouse)[Glossary ### Long Tasks ](/resources/glossary/long-tasks)[Glossary ### Main Thread Work ](/resources/glossary/main-thread-work) Sources - [Chrome DevTools documentation](https://developer.chrome.com/docs/devtools/) [![PageSpeed Matters](/assets/logo-DtyG_mQE.png)](/) We optimize website load times to rank higher, decrease advertising costs, and convert more often. 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