Seokla
Tools
Speed
TTFB Test
See how long visitors wait for my page to start loading
Round Trip Time (RTT) Test
Check my server’s network delay
Network Dependency Tree
See which files hold up my page and which of them the browser finds late
Lighthouse Throttling Simulator
See how my page’s speed changes on slower and faster connections
Core Web Vitals History
See how fast my site has been for real visitors over the past months
Content
Text to HTML Ratio Checker
See how much of my page is real text
HTML Size Analyzer
See how heavy my page’s code is and what takes up the space
DOM Size Checker
See how big and how deeply nested my page’s structure is
Schema Validator
Check the structured data on my page
NoScript Test
See what is left of my page without JavaScript
Server
HTTP Header Checker
See what my server tells browsers and search engines about a page
Traceroute Test
See the path a request takes to my server