Mobile Performance vs Desktop
Most websites now receive the majority of their traffic from mobile devices, yet phones have less processing power and often slower, less reliable connections than desktops. A page that feels fast on your office machine can feel sluggish on a mid-range phone.
Because Google ranks primarily on the mobile experience, mobile performance is where we focus first.
The Device That Counts
For most sites today, the typical visitor is on a phone, often on a patchy connection. Designing and testing for that harder case first means the experience is strong for everyone, rather than polished on desktop and frustrating on the device people actually use.
Why We Optimise Mobile First
Because most visitors and Google's own ranking both lead with mobile, we treat the mobile experience as the primary target rather than an afterthought. A site that is fast on a modest phone is fast for almost everyone.
- Most traffic now comes from mobile devices.
- Google ranks primarily on the mobile version.
- Mobile is the harder, more constrained case.
- Solving it usually benefits desktop too.
Testing the Real Mobile Experience
A common mistake is to judge mobile performance on a high-end phone connected to office wi-fi. That is not what most visitors have. We test against conditions closer to the average person browsing on the move.
- Use a mid-range device, not the latest flagship.
- Simulate a typical mobile network, not fast broadband.
- Check how the page behaves with a weak signal.
- Confirm tap targets and text are comfortable on a small screen.
Why Mobile Is Harder
- Less powerful processors take longer to run JavaScript.
- Mobile networks are slower and less consistent.
- Smaller screens still download the same heavy assets unless optimised.
How We Optimise for Mobile
- Test on real mid-range devices, not just a fast laptop.
- Serve smaller images sized for mobile screens.
- Reduce JavaScript so weaker processors keep up.
- Prioritise the content visitors see first on a small screen.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.