pdidiesel.com website review

About 458 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.6 s faster on a phone.

A phone's processor spends 4.7 s on main-thread work while loading, 1.5 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Shopify, Affirm and Klaviyo and others), adding 1.2 MB and 895 ms of main-thread time.

Your mobile performance score is 64. Pages that score under 90 lose visitors before the first paint.

7 images could be 322 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 450 ms faster on a phone.

Shopify costs a phone 383 ms of main-thread work and 632 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.

57 KiB could be saved by minifying JavaScript.

The page has 2,653 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Klaviyo costs a phone 208 ms of main-thread work and 328 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.

6 long tasks block the main thread while loading, the longest for 248 ms. During a long task the page ignores taps.

10 files are served with short cache lifetimes, so returning visitors download them again (178 KiB).

38 KiB JavaScript is shipped twice across bundles.

About 26 KiB of CSS is downloaded but never applied on this page.

Polyfills for old browsers add 25 KiB JavaScript that modern phones do not need.

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

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

4 KiB could be saved by minifying CSS.

Your largest element takes 11.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image.

The page becomes fully interactive after 13.2 s. Good is under 3.8 s.

Visually, the page fills in at 5.3 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 282 ms in total while the page loads. Good is under 200 ms.

The first text or image appears after 1.9 s on a phone. Good is under 1.8 s.

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 79 ms to 95 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 4.0 MB in 356 requests on a phone: images 1.5 MB (51), scripts 1.3 MB (147) and other files 818 KiB (124). Under 2 MB keeps phones on slow connections fast.

PDI_Mobile_Image_1080_X_1350_2.png is on the first screen but marked loading="lazy", so the browser waits before fetching it and the page looks finished later. Load it eagerly (and give it fetchpriority="high" if it is the main image).

By the Sustainable Web Design model, a visit to your homepage emits about 1.13 g of CO₂e: 135.7 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

All page content should be contained by landmarks: 7 elements on the page fail this check, rated moderate by axe-core.

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

Your title is 89 characters, so Google will cut it off around 60: “Performance Diesel | PDI Diesel | CAT, Cummins, Detroit, & More‎ – Performance Diesel Inc”.

Your meta description is 281 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found (Organization and WebSite) but with 1 problem, for example “Organization: sameAs is an empty list”.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

Your <h1> is empty.

The homepage links to 294 pages on pdidiesel.com and 1 external page.

There is no https://pdidiesel.com/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

https://pdidiesel.com/customer_authentication/redirect has no <title>, so Google invents the link text in results.

https://pdidiesel.com/customer_authentication/redirect is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.

https://pdidiesel.com/customer_authentication/redirect, https://pdidiesel.com/collections/ecm-tuning, https://pdidiesel.com/collections/pdi-big-boss%E2%84%A2-cat-exhaust-manifolds and https://pdidiesel.com/collections/pdi-big-boss%E2%84%A2-cummins-turbos have no meta description, so Google writes the search snippet from whatever text it finds.

Your homepage links to 2 pages by a URL that isn't their canonical one, for example https://pdidiesel.com/collections/pdi-big-boss%E2%84%A2-cat-exhaust-manifolds, whose canonical is https://pdidiesel.com/collections/pdi-big-boss%e2%84%a2-cat-exhaust-manifolds. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

https://pdidiesel.com/customer_authentication/redirect has no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 103 found) and read each the way a search engine does.

3 images are displayed at the wrong aspect ratio, so they look stretched or squashed.

1 image is served at too low a resolution for sharp phone screens.

Your homepage shows a street address but no LocalBusiness JSON-LD, so Google and AI assistants have to guess your address, hours and phone from the page text.

Social proof on the homepage: 1 trust badge. Pairing it with named testimonials or customer logos makes it far more convincing.

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

The homepage shows no opening hours. If customers visit or call, show when.

There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

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

The homepage carries about 1,069 words of visible text.

Before a visitor clicks anything, the page loads Klaviyo (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 7 cookies, 1 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 18 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.