demo · v136

Tag Header Inspector

Paste any speculation-rules JSON and the inspector parses the tag field on each rule set, simulates the Sec-Speculation-Tags header Chrome would send when prefetching a URL, and emits a per-tag count so you can validate your CDN logging schema before deploying.

speculation rules JSON

simulated Sec-Speculation-Tags header per URL


      

    


    

      
rule sets: —

      
tagged sets: —

      
unique URLs covered: —

    


    

  


  

    
see also