masterbuildermercantile.com website review

The page has 6,478 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

11 files are served with short cache lifetimes, so returning visitors download them again (340 KiB).

Your mobile performance score is 78. Pages that score under 90 lose visitors before the first paint.

About 507 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 450 ms faster on a phone.

6 third-party services load with your homepage (PayPal, Shopify and shop.app and others), adding 1.1 MB and 383 ms of main-thread time.

2 files block the first paint until they finish downloading. Deferring or inlining them could save about 450 ms.

7 images could be 256 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 150 ms faster on a phone.

PayPal costs a phone 277 ms of main-thread work and 681 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

A phone's processor spends 2.7 s on main-thread work while loading, 836 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Shopify costs a phone 102 ms of main-thread work and 354 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

About 47 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 150 ms faster on a phone.

Polyfills for old browsers add 7 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.

1 long task block the main thread while loading, the longest for 73 ms. During a long task the page ignores taps.

6 KiB could be saved by minifying CSS.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

The page becomes fully interactive after 13.7 s. Good is under 3.8 s.

Your largest element takes 5.8 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image.

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 112 ms to 129 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' largest content (lcp) went from 1.7 s to 1.6 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 3.7 MB in 323 requests on a phone: other files 1.3 MB (182), images 1.0 MB (31) and scripts 890 KiB (98). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 1.05 g of CO₂e: 126.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

ARIA commands must have an accessible name: 7 elements on the page fail this check, rated serious by axe-core.

Some lists contain elements other than list items, which screen readers announce wrongly.

1 element use ARIA attributes their role does not allow, which confuses screen readers.

The viewport tag blocks pinch-zoom, which low-vision visitors rely on.

All page content should be contained by landmarks: 3 elements on the page fail this check, rated moderate by axe-core.

The page has no <main> landmark, so screen-reader users cannot jump straight to the content.

7 visible links have no text or label, so screen readers cannot say where they go.

5 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

1 form field has no label, so screen readers announce an empty box and autofill guesses.

ARIA role should be appropriate for the element: 8 elements on the page fail this check, rated minor by axe-core.

Your title is 66 characters, so Google will cut it off around 60: “MasterBuilder Mercantile | Plumbing, HVAC & Backflow Online Supply”.

Your meta description is 265 characters; Google truncates after about 160, so the end of your pitch is cut.

The homepage links to 890 pages on masterbuildermercantile.com and 22 external pages.

https://masterbuildermercantile.com/collections/backflow-prevention-1/Classification_Double-Check-Valve-Assemblies and https://masterbuildermercantile.com/collections/backflow-prevention-1/Classification_Reduced-Pressure-Principle-Assemblies are marked noindex but linked from your homepage. If they are meant to be found, remove the noindex.

https://masterbuildermercantile.com/collections/backflow-prevention-1, https://masterbuildermercantile.com/collections/backflow-prevention-1/Classification_Double-Check-Valve-Assemblies and https://masterbuildermercantile.com/collections/backflow-prevention-1/Classification_Reduced-Pressure-Principle-Assemblies all use the title “Backflow Preventers & Backflow Prevention | RPZ & DCVA”. Search engines can't tell which page to show for a search, so each competes with the others.

https://masterbuildermercantile.com/blogs/masterbuilder-blog has no meta description, so Google writes the search snippet from whatever text it finds.

https://masterbuildermercantile.com/collections/backflow-prevention-1, https://masterbuildermercantile.com/collections/backflow-prevention-1/Classification_Double-Check-Valve-Assemblies and https://masterbuildermercantile.com/collections/backflow-prevention-1/Classification_Reduced-Pressure-Principle-Assemblies use the same meta description. A description written for each page earns more clicks.

https://masterbuildermercantile.com/collections/radiant-heating took over 3 s to send its HTML from our server.

We fetched 15 pages linked from your homepage (of 200 found) and read each the way a search engine does.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.

Your longest form asks for 10 fields (0 required). Every extra field lowers completion.

The homepage has only about 18 words of visible text; thin pages give Google and first-time buyers little to go on.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

Before a visitor clicks anything, the page loads Google Tag Manager, Meta Pixel and Reddit Pixel (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 12 cookies, 8 of them by other companies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 10 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.