spire.com website review

11 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.9 s.

10 files are served with short cache lifetimes, so returning visitors download them again (308 KiB).

6 third-party services load with your homepage (YouTube, cookiepro.com and JSDelivr CDN and others), adding 2.6 MB and 1.2 s of main-thread time.

YouTube costs a phone 993 ms of main-thread work and 2.2 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.

About 1.1 MB of JavaScript is downloaded but never used on this page.

Your mobile performance score is 62 (desktop: 88). Pages that score under 90 lose visitors before the first paint.

A phone's processor spends 2.9 s on main-thread work while loading, 1.5 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

About 213 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.

10 long tasks block the main thread while loading, the longest for 234 ms. During a long task the page ignores taps.

Desktop scores 88 but mobile only 62. A gap that wide usually means heavy scripts and images that hit phones hardest.

Polyfills for old browsers add 9 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.

The page becomes fully interactive after 18.9 s. Good is under 3.8 s.

Your largest element takes 5.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Through our data, analytics, and software products, we enab…”.

Visually, the page fills in at 6.9 s (Speed Index). Good is under 3.4 s.

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 362 ms in total while the page loads. Good is under 200 ms.

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

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 117 ms to 128 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 1.8 s to 1.6 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 4.4 MB in 77 requests on a phone: images 2.0 MB (31), scripts 1.9 MB (20) and stylesheets 166 KiB (8). Under 2 MB keeps phones on slow connections fast.

4 images are downloaded at several times the size a phone draws them, for example hq720.jpg at 1,280 px wide, shown at 368 px. Resized copies would save about 87 KiB.

4 images further down the page (339 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

4 images (339 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 1.25 g of CO₂e: 150.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 2 elements on the page fail this check, rated moderate by axe-core.

10 visible links have no text or label, so screen readers cannot say where they go.

ARIA role should be appropriate for the element: 2 elements on the page fail this check, rated minor by axe-core.

Your title is 69 characters, so Google will cut it off around 60: “Government, Weather & Aviation Intelligence from Space - Spire Global”.

The homepage links to 74 pages on spire.com and 12 external pages.

We fetched 15 pages linked from your homepage (of 44 found) and read each the way a search engine does.

8 of 26 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

1 error was logged to the browser console while the page loaded, for example “Cannot read properties of null (reading 'parentNode')”.

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

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

Social proof on the homepage: 6 customer or partner logos. Pairing it with named testimonials or customer logos makes it far more convincing.

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 568 words of visible text.

Opening the homepage sets 2 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 10 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.