A short rule list for loading="lazy": below the fold yes, LCP hero no, and retest after every theme or plugin change that touches images. A theme update or optimisation plugin turns on lazy loading for every image. Bandwidth on long articles looks b...

“No data” in the Chrome User Experience Report CrUX is not a single bug. It is a set of eligibility gates. Google only publishes field percentiles when enough opted-in Chrome sessions meet privacy and quality rules for that origin or URL. PageSpeed I...

A green compression toggle is not an LCP fix. Confirm Content-Encoding on the critical path, then check the LCP element and Time to First Byte that still dominate the lab run. The CDN panel shows Brotli enabled and the host checklist ticks compressi...

Lazy loading images and a fast Largest Contentful Paint LCP pull in opposite directions when the same rule is applied to every . Deferring offscreen bytes is usually right, but deferring the hero that PageSpeed Insights later names as LCP is usually ...

The purchase is rarely another free checker. It is scheduled portfolio coverage, shared history, and flat organisation caps that survive twenty client sites. An agency can open ChatGPT, paste a PageSpeed Insights URL, and get a plausible fix list be...

WordPress speculative loading started as a Performance Team feature plugin and landed in WordPress 6.8https://make.wordpress.org/core/2025/03/06/speculative-loading-in-6-8/ as Core behaviour for most public front ends. The browser still does the work...

Most agencies do not need three products on day one. Pick a default PageSpeed monitoring stack, then add RUM only where money URLs justify it. The roster hits twenty client sites, yet the “monitoring stack” is still a shared folder of PageSpeed Insi...

Time to First Byte is often treated as a synonym for back-end time. In the browser it is wider: everything from the start of the navigation until the first byte of the final response arrives. Redirects, DNS, connection setup, TLS inside that connecti...

Searching for an Oh Dear alternative usually lands you on more uptime tools. Green reachability is not a Core Web Vitals portfolio. The uptime dashboard is green, SSL is fine, and the status page is quiet, yet a client still forwards a PageSpeed Ins...

The CDN dashboard shows compression enabled. A host panel lists Brotli as on. A lab run on the priority URL still flags Enable text compression, or the Performance score barely moves while Time to First Byte gets worse after someone raised the Brotli...

Strong first-party RUM on Vercel projects. Not a multi-client PageSpeed portfolio. Here is when it is enough, and when it is not. Agencies often turn on Vercel Speed Insights for a Next.js client, see route-level Core Web Vitals, and assume monitori...

We have shipped the weekly organisation reports agencies keep asking for on retainers: a portfolio PDF built from scheduled PageSpeed Insights history, plus white-label branding options so the file can leave under your agency name instead of ours. U...

Public Magento Core Web Vitals tables often put Adobe Commerce in the middle of the ecommerce pack: roughly four to five in ten Magento origins pass all three vitals on mobile CrUX, depending on who measured and how they labelled the platform. Open a...

Same URL, same Lighthouse engine: different CPU, throttling, and cache. Compare tools fairly instead of merging the scores. You run Lighthouse in Chrome DevTools on a client URL and see Performance 94. You paste the same URL into PageSpeed Insights ...

Automated web performance monitoring is a system that repeatedly measures how pages load and respond, stores those results over time, and notifies someone when agreed thresholds break. It usually combines scheduled laboratory tests Lighthouse / PageS...

Public Core Web Vitals tables usually label platforms Shopify, Magento, WooCommerce, not industries. A fashion or apparel agency still needs a different question answered: what do multi-page lab averages look like on clothing storefronts that lean on...

Same LCP and CLS numbers in the merge gate and the retainer review — not two conflicting greens. Lighthouse CI can report green on a pull request while the client’s monthly PageSpeed pack still shows amber on Largest Contentful Paint. Both results c...

Agencies sell monthly performance retainers every week. Too many of those months still end the same way: a last-minute PageSpeed Insights run, a folder of screenshots, and a PDF that still shows someone else’s brand chrome. Clients pay for monitoring...

Oh Dearhttps://ohdear.app/ is the tool many agencies use when they want one place for “is the site up?” plus SSL, DNS, broken links, status pages, and a daily Lighthouse score. That package is strong when the primary risk is downtime, certificate exp...

Tool roundups answer which portal to buy. This is the monthly pack: which sections, which clocks, and what clients renew. Search “white label SEO reports” and Google mostly returns portals, audit tools, and “best of” lists. That is useful when you a...