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Making Mobile Sites Faster
#Port80, May 2013
Imagine… later today…
How long would you wait here?
Some of this advice will expire
So many devices… lots of variation
Differing Network Environments
GPRS EDGE 3G 4G WiFi
Faster, Lower Latency???
Conference, Hotel & Coffee shop WiFi
Latency is a huge issue
“In 2012, the average worldwide RTT to
Google is still ~100ms, and ~50-60ms within
“we are looking at 100-1000ms RTT range
3G Radio Resource Control
CELL_DCH Idle for 5s
Idle for 12s
Exact timings vary and depend on carrier NOT device
It’s not just about speed
Some things block
What’s needed to render the page?
Stop proxies recompressing your images
Unclear how many proxies follow the standard
Do you really want to do it by hand?
Can adapt format for visitor e.g.WebP
Automate generate image versions
- Dedicated services
We’re adapting on the client-side
But we shouldn’t forget about the server