celtics.com website review

96 files are served with short cache lifetimes, so returning visitors download them again (2.1 MB).

About 1.7 MB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 5.2 s faster on a phone.

9 files block the first paint until they finish downloading. Deferring or inlining them could save about 3.2 s.

About 356 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 2.1 s faster on a phone.

Your mobile performance score is 16. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 5.8 s on main-thread work while loading, 2.3 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

The page has 3,233 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

14 images could be 704 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 500 ms faster on a phone.

8 third-party services load with your homepage (Google Tag Manager, spreaker.com and Google/Doubleclick Ads and others), adding 2.4 MB and 880 ms of main-thread time.

Google Tag Manager costs a phone 351 ms of main-thread work and 499 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.

spreaker.com costs a phone 223 ms of main-thread work and 294 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.

celtics.com costs a phone 31 ms of main-thread work and 875 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.

20 long tasks block the main thread while loading, the longest for 213 ms. During a long task the page ignores taps.

Polyfills for old browsers add 86 KiB JavaScript that modern phones do not need.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).

11 KiB could be saved by minifying JavaScript.

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.

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.

For real visitors the layout shifts by 0.52 (75th percentile). Good is under 0.1.

Real visitors see the first content after 3.1 s (75th percentile). Good is under 1.8 s.

Your largest element takes 25.9 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “media-image”.

The page becomes fully interactive after 34.0 s. Good is under 3.8 s.

Visually, the page fills in at 9.6 s (Speed Index). Good is under 3.4 s.

The layout shifts by 0.537 while loading, so content jumps under the reader's thumb. Good is under 0.1.

The first text or image appears after 4.1 s on a phone. Good is under 1.8 s.

Scripts block taps and scrolling for 932 ms in total while the page loads. Good is under 200 ms.

Real visitors wait 3.5 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors wait 269 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Real visitors wait 1.0 s for your server to start answering (75th percentile). Good is under 800 ms.

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

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 158 ms to 156 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 2.8 s to 2.7 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 7.1 MB in 176 requests on a phone: images 3.2 MB (65), scripts 2.8 MB (60) and stylesheets 425 KiB (9). Under 2 MB keeps phones on slow connections fast.

110126.jpg 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 2.01 g of CO₂e: 241.0 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Images must have alternative text: 2 elements on the page fail this check, rated critical by axe-core.

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

1 element hidden from screen readers can still receive keyboard focus.

1 frame has no title, so screen-reader users cannot tell what it contains.

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

ARIA role should be appropriate for the element: 11 elements on the page fail this check, rated minor by axe-core.

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

Elements marked as presentational should be consistently ignored: 3 elements on the page fail this check, rated minor by axe-core.

Headings should not be empty: 1 element on the page fails this check, rated minor by axe-core.

Alternative text of images should not be repeated as text: 1 element on the page fails this check, rated minor by axe-core.

There are 5 <h1> headlines (“Jayson Tatum Earns 14th Career Player of the Week…”, “Keys to the Game: Rockets 109, Celtics 93” and “11/2 Game Preview: Celtics at Rockets”). One clear main headline is easier for people and search engines.

The homepage links to 207 pages on celtics.com and 84 external pages.

Your robots.txt shuts out ChatGPT (ChatGPT-User) and Perplexity (PerplexityBot). These fetch pages to answer people's questions and cite the source, so your site can't be quoted or linked in those answers.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no /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.

robots.txt blocks GPTBot, ClaudeBot, Google-Extended, Applebot-Extended and CCBot, which collect pages to train models. That's a legitimate choice and doesn't by itself stop the site appearing in AI answers.

/nets has no <title>, so Google invents the link text in results.

/nets has no meta description, so Google writes the search snippet from whatever text it finds.

/nets, /pacers, /hawks and /heat have no <h1> headline, so visitors and search engines get no clear main topic.

/pacers, /bucks and /hawks have under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.

We fetched 15 pages linked from your homepage (of 101 found) and read each the way a search engine does.

101 of 149 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

1 third-party cookie is set on load; browsers are restricting these, so whatever relies on them breaks.

3 errors were logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_HTTP2_PROTOCOL_ERROR”.

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

Large scripts ship without source maps.

No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

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

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 995 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). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 6 cookies (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 13 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.