osat.com website review

6 images could be 757 KiB 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 700 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.4 s faster on a phone.

Your mobile performance score is 69. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (ZenDesk, Shopify and vitals.app and others), adding 4.3 MB and 493 ms of main-thread time.

9 files are served with short cache lifetimes, so returning visitors download them again (94 KiB).

Shopify costs a phone 83 ms of main-thread work and 3.5 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.

ZenDesk costs a phone 193 ms of main-thread work and 430 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.

4 long tasks block the main thread while loading, the longest for 124 ms. During a long task the page ignores taps.

About 28 KiB of CSS is downloaded but never applied on this page.

19 KiB could be saved by minifying JavaScript.

Polyfills for old browsers add 10 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.

Your largest element takes 16.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Satellite communication devices from Orbital SatCom”.

The page becomes fully interactive after 20.1 s. Good is under 3.8 s.

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 113 ms to 144 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

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

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' largest content (lcp) went from 1.7 s to 1.5 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 5.6 MB in 220 requests on a phone: images 3.2 MB (20), scripts 1.3 MB (61) and other files 855 KiB (124). Under 2 MB keeps phones on slow connections fast.

3 images are downloaded at several times the size a phone draws them, for example iStock-1358045703.jpg at 2,174 px wide, shown at 388 px. Resized copies would save about 808 KiB.

By the Sustainable Web Design model, a visit to your homepage emits about 1.57 g of CO₂e: 188.9 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.

The homepage links to 167 pages on osat.com and 7 external pages.

We fetched 15 pages linked from your homepage (of 88 found) and read each the way a search engine does.

4 of 17 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

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: “more than 60,000 customers”. 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.

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 928 words of visible text.

Before a visitor clicks anything, the page loads Google Tag Manager and Meta Pixel (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 4 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 20 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.