quantumcircuits.com website review

7 images could be 1.7 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 7.7 s faster on a phone.

9 files block the first paint until they finish downloading. Deferring or inlining them could save about 4.3 s.

About 171 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 900 ms faster on a phone.

Your mobile performance score is 57. Pages that score under 90 lose visitors before the first paint.

About 118 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 600 ms faster on a phone.

7 third-party services load with your homepage (Google Tag Manager, GitHub and lever.co and others), adding 546 KiB and 190 ms of main-thread time.

2 long tasks block the main thread while loading, the longest for 136 ms. During a long task the page ignores taps.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 100 ms).

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

3 KiB could be saved by minifying CSS.

The first text or image appears after 8.2 s on a phone. Good is under 1.8 s.

Your largest element takes 19.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “QUANTUM Stability. Repeatability. Consistency. Home of the …”.

The page becomes fully interactive after 19.6 s. Good is under 3.8 s.

Visually, the page fills in at 8.2 s (Speed Index). Good is under 3.4 s.

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

Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.

3 images are downloaded at several times the size a phone draws them, for example Aqumen-Seeker-Data-Sheet-Feature-Image.jpg at 1,920 px wide, shown at 351 px. Resized copies would save about 762 KiB.

Your homepage downloads 3.5 MB in 49 requests on a phone: images 2.2 MB (19), fonts 784 KiB (8) and scripts 375 KiB (8). Under 2 MB keeps phones on slow connections fast.

3 images (1.1 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.

3 images further down the page (1.1 MB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 1.00 g of CO₂e: 120.0 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

1 element use ARIA attributes their role does not allow, which confuses screen readers.

6 images have no alt text, which hurts accessibility and image search.

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.

The viewport tag blocks pinch-zoom, which low-vision visitors rely on.

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

6 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

The homepage links to 31 pages on quantumcircuits.com and 4 external pages.

There is no https://quantumcircuits.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://quantumcircuits.com/contact-us and https://quantumcircuits.com/resources/quantum-computing-with-aqumen-seeker have no meta description, so Google writes the search snippet from whatever text it finds.

https://quantumcircuits.com/technology and https://quantumcircuits.com/why-cavities-are-great-for-dual-rail-qubits use the same meta description. A description written for each page earns more clicks.

https://quantumcircuits.com/contact-us, https://quantumcircuits.com/terms-of-use and https://quantumcircuits.com/privacy-policy have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 13 pages linked from your homepage and read each the way a search engine does.

4 of 9 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 “Failed to load resource: the server responded with a status of 404 (Not Found)”.

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: 5 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 519 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). 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 8 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.