juniorPWA
Why are HTTPS requirements important for PWAs?
Updated May 17, 2026
Short answer
PWAs require HTTPS to ensure secure communication and enable Service Workers.
Deep explanation
HTTPS protects against man-in-the-middle attacks and ensures integrity. Service Workers and many PWA APIs only work over secure contexts.
Real-world example
Chrome blocks Service Workers on HTTP sites.
Common mistakes
- Deploying PWAs on insecure HTTP origins.
Follow-up questions
- Can localhost use Service Workers?
- Why does browser enforce HTTPS?