Documentation Index
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Overview
Observatory (beta) Beta
Settings
- Recommendations
- Measurement
- Image optimization
  
  Image Resizing ↗
  Polish ↗
  Mirage Deprecated
  
  Troubleshooting
  
  Image optimization on optimized images
  Polish statuses ↗
  Troubleshoot missing images
- Content optimizations
  
  Automatic Platform Optimization ↗
  Content compression
  Shared dictionaries Beta
  
  Cloudflare Fonts Beta
  
  Overview Beta
  FAQ
  Troubleshooting
  
  Early Hints ↗
  Prefetch URLs
  
  Rocket Loader
  
  Overview
  Enable
  Ignore JavaScripts
  
  Smart Hints ↗
  Speed Brain Beta
  
  Troubleshooting
  
  Content encoding issues
  Turn off Auto Minify
- Protocol optimization
  
  HTTP/2
  HTTP/3 (with QUIC)
  Enhanced HTTP/2 Prioritization
  0-RTT Connection Resumption
  
  Troubleshooting
  
  Enhanced HTTP/2 Prioritization negatively affects iOS/Safari devices
  Troubleshoot protocol issues
  
  HTTP/2 to Origin
Smart Shield ↗
Troubleshooting
Aggregated Internet Measurement
Glossary
Agent resources

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Overview

Directory
Speed
Settings
Protocol optimization

Protocol optimization

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HTTP/2
HTTP/3 (with QUIC)
Enhanced HTTP/2 Prioritization
0-RTT Connection Resumption
HTTP/2 to Origin
Troubleshooting

Last updated: Jun 4, 2026