spscom.com website review

Google Tag Manager costs a phone 2.3 s of main-thread work and 966 KiB of downloads while your page loads. That alone is enough to make taps feel slow. 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 13.4 s on main-thread work while loading, 7.9 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Google CDN costs a phone 1.2 s of main-thread work and 1.1 MB of downloads while your page loads. That alone is enough to make taps feel slow. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

8 third-party services load with your homepage (Google Tag Manager, Google CDN and Hubspot and others), adding 3.1 MB and 4.5 s of main-thread time.

About 1.4 MB of JavaScript is downloaded but never used on this page.

Your mobile performance score is 60. Pages that score under 90 lose visitors before the first paint.

19 files block the first paint until they finish downloading. Deferring or inlining them could save about 850 ms.

76 files are served with short cache lifetimes, so returning visitors download them again (465 KiB).

20 long tasks block the main thread while loading, the longest for 483 ms. During a long task the page ignores taps.

Hubspot costs a phone 286 ms of main-thread work and 143 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.

Vimeo costs a phone 167 ms of main-thread work and 561 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.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 100 ms).

About 83 KiB of CSS is downloaded but never applied on this page.

2 images could be 35 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Polyfills for old browsers add 28 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.

3 KiB could be saved by minifying CSS.

Scripts block taps and scrolling for 5.8 s in total while the page loads. Good is under 200 ms.

The page becomes fully interactive after 28.6 s. Good is under 3.8 s.

Visually, the page fills in at 9.7 s (Speed Index). Good is under 3.4 s.

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 178 ms to 250 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' largest content (lcp) went from 2.0 s to 2.4 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

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

1 image have no width and height attributes, so the layout jumps as each one loads.

Your homepage downloads 4.3 MB in 191 requests on a phone: scripts 3.1 MB (53), other files 421 KiB (48) and images 388 KiB (57). Under 2 MB keeps phones on slow connections fast.

C1-website-header-dots-only.webp 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).

1 image is downloaded at several times the size a phone draws it, for example Paypal_2014_logo.png at 389 px wide, shown at 56 px. Resized copies would save about 66 KiB.

2 images (148 KiB) are JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

By the Sustainable Web Design model, a visit to your homepage emits about 1.21 g of CO₂e: 145.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

4 buttons have no accessible name, so screen readers announce just “button”.

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

2 form fields have no label, so screen readers announce an empty box and autofill guesses.

1 visible link has no text or label, so screen readers cannot say where it goes.

Headings skip levels (h2 → h4, h2 → h6 and h2 → h5), which makes the page harder to scan with a screen reader.

28 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

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

6 links have no real href, so search engines can't follow them.

The homepage links to 128 pages on spscom.com and 6 external pages.

There is no https://www.onec1.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.

We fetched 15 pages linked from your homepage (of 95 found) and read each the way a search engine does.

2 third-party cookies are set on load; browsers are restricting these, so whatever relies on them breaks.

The page uses 1 deprecated browser API that will stop working in future browsers (“Unload event listeners are deprecated and will be removed.”).

6 errors were logged to the browser console while the page loaded, for example “Cannot read properties of null (reading 'addEventListener')”.

Chrome logged issues while loading the page (“Cookie”).

Large scripts ship without source maps.

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.

A local customer looking to call finds no phone number on the homepage. Add one, ideally as a tap-to-call link.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

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 1,025 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, HubSpot and LinkedIn Insight and 2 mores (measured from a US location before any click). A consent tool (HubSpot cookie banner) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 9 cookies, 3 of them by other companies (measured from a US location before any click).

Loading the homepage contacts 44 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.