chrome debugging

 

The difference between size and Content

 

236 down vote accepted

"Size" is the number of bytes on the wire, and "content" is the actual size of the resource. A number of things can make them different, including: Being served from cache (small or 0 "size") Response headers, including cookies (larger "size" than "content") Redirects or authentication requests gzip compression (smaller "size" than "content", usually) From the docs:

 

stackoverflow answer

http://stackoverflow.com/questions/8072921/chrome-dev-tools-size-vs-content

 

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The browser fetches the file from the local cache

 

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The real image of timeline reflects web page loading, request-response time information