Sydney Web Design Agency PageSpeed Study (2026)

# Sydney web design agency mobile performance benchmark

We tested **9 Sydney web design agency homepages** with Google's PageSpeed Insights API (mobile, lab data) on **2026-07-30**. Numbers are reproducible — re-run the same URLs in PSI to verify.

This is original research, not scraped rankings. We publish the methodology so journalists, bloggers, and business owners can cite it.

Key findings

• **Average mobile performance score:** 61/100 across 8 sites that returned data (1 did not respond to the test).
• **0 of 8** met the lab thresholds for LCP (< 2.5s) and CLS (< 0.1).
• **1 of 8** had enough real-user traffic for Chrome to report field INP.
• **D-LAB (d-lab.codes)** scored **71/100** on mobile.

Full results

| Agency | Mobile score | LCP (s) | CLS | INP (field) | LCP+CLS pass | | --- | ---: | ---: | ---: | ---: | --- | | D-LAB | 71 | 6.79 | 0 | no field data | No | | Humaan | 61 | 9.11 | 0 | 313 | No | | Bonfire | 48 | 15.46 | 0 | no field data | No | | Webcoda | 49 | 32.03 | 0 | no field data | No | | Impressive Digital | 64 | 13.93 | 0 | no field data | No | | Safari Digital | 72 | 4.68 | 0.003 | no field data | No | | Marketing Sweet | 58 | 5.61 | 0.086 | no field data | No | | Sydney Web Design | 61 | 8.67 | 0.013 | no field data | No | | Redback | — | — | — | no field data | — |

Methodology

• **Tool:** [PageSpeed Insights](https://pagespeed.web.dev/) v5 API, mobile strategy, performance category.
• **Pages tested:** Each agency's homepage (https://domain/).
• **Metrics:** Lighthouse performance score, LCP and CLS from lab data; INP from Chrome UX Report field data only.
• **On INP:** INP can only be measured from real visitors. Sites without enough Chrome traffic show "no field data" rather than a lab substitute — Time to Interactive is *not* INP, and reporting it as such would be misleading. Pass/fail below therefore reflects LCP and CLS only.
• **Limitations:** Lab scores vary by run; we snapshot one point in time. Does not measure UX, SEO, or conversion.

Why this matters for Sydney businesses

Most buyers compare agencies on portfolio and price — but **site speed is a trust signal**. If an agency's own homepage loads slowly on mobile, that's a data point worth asking about before you hire them.

For a deeper dive on fixing performance, see our [web performance optimization guide](https://d-lab.codes/blog/web-performance-optimization-guide).

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*D-LAB is a Sydney web design studio building fast custom sites with React and Next.js. [Get in touch](https://d-lab.codes/contact) if you want a performance-first rebuild.*