sealedair.com website review

54 files are served with short cache lifetimes, so returning visitors download them again (4.9 MB).

12 images could be 3.6 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 2.5 s faster on a phone.

About 291 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.1 s faster on a phone.

The page has 3,108 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Your mobile performance score is 63. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (Google Tag Manager, Marketo and Optanon and others), adding 796 KiB and 664 ms of main-thread time.

12 files block the first paint until they finish downloading. Deferring or inlining them could save about 650 ms.

Polyfills for old browsers add 31 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 300 ms faster on a phone.

Google Tag Manager costs a phone 270 ms of main-thread work and 324 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 2.1 s on main-thread work while loading, 873 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

About 31 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.

5 long tasks block the main thread while loading, the longest for 142 ms. During a long task the page ignores taps.

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.

Your largest element takes 31.1 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “FP_251024_ZeroPrep_Lifestyle_Chicken_Sandwich_Spicy_Mayo_07”.

The page becomes fully interactive after 32.1 s. Good is under 3.8 s.

Visually, the page fills in at 7.4 s (Speed Index). Good is under 3.4 s.

Real visitors wait 246 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Scripts block taps and scrolling for 242 ms in total while the page loads. Good is under 200 ms.

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

5 images weigh 20.5 MB together. On a phone connection a single image that size takes seconds.

Your homepage downloads 7.6 MB in 118 requests on a phone: images 5.3 MB (51), other files 1.1 MB (21) and scripts 829 KiB (28). Under 2 MB keeps phones on slow connections fast.

4 images are downloaded at several times the size a phone draws them, for example PP_240807_AutobagRelaunch_650H_14.jpg at 3,000 px wide, shown at 390 px. Resized copies would save about 1.0 MB.

12 images (5.7 MB) 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.

1 image further down the page (544 KiB) download before anyone scrolls to it. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 2.16 g of CO₂e: 259.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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

2 links inside paragraphs rely on colour alone to stand out.

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

All page content should be contained by landmarks: 28 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.

Elements with visible text labels do not have matching accessible names. (1 element).

Your title is 67 characters, so Google will cut it off around 60: “Sealed Air - Protective and Food Packaging, Automation & Healthcare”.

Your meta description is 247 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found (BreadcrumbList, ImageObject, Organization and WebPage) but with 1 problem, for example “WebPage: keywords is an empty list”.

The homepage links to 296 pages on sealedair.com and 16 external pages.

Your Organization JSON-LD is missing sameAs (social profiles), description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

There is no https://www.sealedair.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://www.sealedair.com/services/food-beverage has no meta description, so Google writes the search snippet from whatever text it finds.

We fetched 15 pages linked from your homepage (of 133 found) and read each the way a search engine does.

13 of 20 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

Chrome logged issues while loading the page (“Content security policy”).

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 customer or partner logo. Pairing it with named testimonials or customer logos makes it far more convincing.

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 997 words of visible text.

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

Opening the homepage sets 6 cookies (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.