spongelearning.com website review

7 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.4 s.

A phone's processor spends 6.0 s on main-thread work while loading, 3.0 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Vimeo, Google Tag Manager and Cookiebot and others), adding 23.4 MB and 1.2 s of main-thread time.

About 3.0 MB of JavaScript is downloaded but never used on this page.

Vimeo costs a phone 785 ms of main-thread work and 12.1 MB 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.

b-cdn.net costs a phone 0 ms of main-thread work and 10.4 MB 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.

Your mobile performance score is 75. Pages that score under 90 lose visitors before the first paint.

43 files are served with short cache lifetimes, so returning visitors download them again (526 KiB).

Google Tag Manager costs a phone 311 ms of main-thread work and 562 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.

5 images could be 329 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

The page has 2,303 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

9 long tasks block the main thread while loading, the longest for 206 ms. During a long task the page ignores taps.

About 49 KiB of CSS is downloaded but never applied on this page.

Polyfills for old browsers add 12 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.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Visually, the page fills in at 16.1 s (Speed Index). Good is under 3.4 s.

The page becomes fully interactive after 38.9 s. Good is under 3.8 s.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 95 ms to 121 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 1.5 s to 2.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Real visitors see the first content after 2.1 s (75th percentile). Good is under 1.8 s.

Real visitors wait 1.2 s for your server to start answering (75th percentile). Good is under 800 ms.

The first text or image appears after 2.6 s on a phone. Good is under 1.8 s.

Scripts block taps and scrolling for 341 ms in total while the page loads. Good is under 200 ms.

Your largest element takes 2.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Whether you’re supporting business-wide transformation, bri…”.

Your homepage downloads 24.1 MB in 205 requests on a phone: media 10.4 MB (2), other files 7.4 MB (80) and scripts 5.2 MB (62). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 6.83 g of CO₂e: 819.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Certain ARIA roles must contain particular children: 1 element on the page fails this check, rated critical by axe-core.

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

8 tap targets are too small or too close together to hit reliably with a finger.

Some list items are not inside a list.

Scrollable region must have keyboard access: 1 element on the page fails this check, rated serious by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 1 element on the page fails this check, rated moderate by axe-core.

All page content should be contained by landmarks: 1 element on the page fails this check, rated moderate by axe-core.

6 elements hidden from screen readers can still receive keyboard focus.

1 link use generic text like “click here” or “learn more”, which tells Google nothing about the page behind it.

The homepage links to 79 pages on spongelearning.com and 1 external page.

There is no https://www.spongelearning.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 50 found) and read each the way a search engine does.

10 images failed to load on a phone, for example https://www.spongelearning.com/en.

3 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.”).

3 errors were logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

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

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 1,012 words of visible text.

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

Opening the homepage sets 3 cookies, 2 of them by other companies (measured from a US location before any click).

Loading the homepage contacts 17 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.