Let's build the future of the web
Get the web's modern capabilities on your own sites and apps with useful guidance and analysis from web.dev.
As the web advances, users' expectations grow. With web.dev's guidance, you can give your users the best experience, wherever they are.
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Verify phone numbers on the web with the SMS Receiver API
Help users type OTPs received through SMS
Preloading responsive images
Starting in Chrome 73, link rel="preload" and responsive images can be combined in order to load images faster.
Fixing layout instability
A walkthrough of using WebPageTest to identify and fix layout instability issues.
Explore topics
Learn more about a topic, and practice your skills with a hands-on codelab.
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- 39 resources
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Fast load times
Guarantee your site loads quickly to avoid user drop off.
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- 8 resources
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Accessible to all
Build a site that works for all of your users.
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- 7 resources
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Network reliability
See consistent, reliable performance regardless of network quality.
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- 5 resources
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Safe and secure
Ensure your site and your users' data is secure.
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- 2 resources
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Easily discoverable
Ensure users can find your site easily through search.
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- 2 resources
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Installable
Be on users' home screens with no need for an app store.
Save your progress
See how your website performs over time, and keep track as you learn on your own schedule.
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