Web diagnostics and optimisation

Featured

• Core Web Vitals: LCP, INP and CLS without the myths

  What Google's three metrics actually measure, why lab numbers disagree with field data, and which fixes move the needle.

  18 August 2026 · 3 min read

• Broken-link audits: finding every 404 before your users do

  Why a sitemap-based check misses half the problems, why a soft 404 is worse than a real one, and how to run a recurring audit.

  5 August 2026 · 3 min read

• Console errors: which ones cost sales and which are noise

  JavaScript errors sorted by user impact, the source-map trap, and how to separate your own code from third-party widgets.

  22 July 2026 · 3 min read

• Dead forms: why enquiries never arrive, and how to catch it

  Seven places a form submission breaks, a checklist for contact and checkout forms, and what belongs in a test submission.

  9 July 2026 · 3 min read

• WCAG accessibility: what automation finds and what it misses

  Automated tests cover about a third of the WCAG criteria. What they catch, what they miss, and how to check the rest by hand in half an hour.

  24 June 2026 · 3 min read

• HTTP security headers: the minimum worth setting today

  CSP, HSTS, X-Content-Type-Options and the rest: what actually protects you, what is obsolete, and in which order to roll them out without an outage.

  10 June 2026 · 3 min read

• Images: cutting half the page weight in one sprint

  Formats, dimensions, lazy loading and priorities. A practical order of work that halves page weight without losing quality.

  27 May 2026 · 3 min read