Skip to main content
web.dev
Resources
  • Web Platform
  • Dive into the web platform, at your pace.
  • HTML
  • CSS
  • JavaScript
  • User experience
  • Learn how to build better user experiences.
  • Performance
  • Accessibility
  • Identity
  • Learn
  • Get up to speed on web development.
  • Learn HTML
  • Learn CSS
  • Learn JavaScript
  • Learn AI
  • Learn Performance
  • Learn Accessibility
  • More courses
  • Additional resources
  • Explore content collections, patterns, and more.
  • AI and the web
  • Explore
  • PageSpeed Insights
  • Podcasts & shows
  • Developer Newsletter
  • About web.dev
Discover Baseline How to use Baseline Blog Case Studies
/
  • English
  • Deutsch
  • Español – América Latina
  • Français
  • Indonesia
  • Italiano
  • Polski
  • Português – Brasil
  • Tiếng Việt
  • Türkçe
  • Русский
  • עברית
  • العربيّة
  • فارسی
  • हिंदी
  • বাংলা
  • ภาษาไทย
  • 中文 – 简体
  • 中文 – 繁體
  • 日本語
  • 한국어
Sign in
  • Articles
AI and the web Fast load times Learn Core Web Vitals Identity Progressive Web Apps Payments Notifications How to optimize INP Network reliability React Animations Mini apps Media Safe and secure WebAssembly Devices Easily discoverable Test automation Angular
web.dev
  • Resources
    • More
    • AI and the web
    • Fast load times
    • Learn Core Web Vitals
    • Identity
    • Progressive Web Apps
    • Payments
    • Notifications
    • How to optimize INP
    • Network reliability
    • React
    • Animations
    • Mini apps
    • Media
    • Safe and secure
    • WebAssembly
    • Devices
    • Easily discoverable
    • Test automation
    • Angular
  • Discover
  • Baseline
  • How to use Baseline
  • Blog
  • Case Studies
  • Understand security basics
  • Security should not be so scary!
  • What are security attacks?
  • Understanding "same-site" and "same-origin"
  • Security headers quick reference
  • Secure connections with HTTPS
  • Why HTTPS matters
  • Enabling HTTPS on your servers
  • What is mixed content?
  • Fixing mixed content
  • When to use HTTPS for local development
  • How to use HTTPS for local development
  • Prevent info leaks
  • Browser sandbox
  • Same-origin policy
  • Cross-Origin Resource Sharing (CORS)
  • Making your website "cross-origin isolated" using COOP and COEP
  • Why you need "cross-origin isolated" for powerful features
  • Protect your resources from web attacks with Fetch Metadata
  • Protect websites from XSS
  • Prevent DOM-based cross-site scripting vulnerabilities with Trusted Types
  • Mitigate cross-site scripting (XSS) with a strict Content Security Policy (CSP)
  • Securely hosting user data in modern web applications
  • Protect users from tracking
  • Understanding cookies