jaspertronics.com website review

13 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.4 s.

Your mobile performance score is 22 (desktop: 53). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 4.0 s on main-thread work while loading, 2.2 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Taboola, trustedsite.com and Google CDN and others), adding 1.6 MB and 1.5 s of main-thread time.

About 553 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 870 ms faster on a phone.

7 images could be 236 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 750 ms faster on a phone.

Taboola costs a phone 708 ms of main-thread work and 36 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.

Google CDN costs a phone 197 ms of main-thread work and 330 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.

rebuyengine.com costs a phone 129 ms of main-thread work and 323 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.

tidio.co costs a phone 85 ms of main-thread work and 518 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.

16 files are served with short cache lifetimes, so returning visitors download them again (85 KiB).

10 long tasks block the main thread while loading, the longest for 225 ms. During a long task the page ignores taps.

About 48 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 120 ms faster on a phone.

11 KiB could be saved by minifying JavaScript.

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

Polyfills for old browsers add 27 KiB JavaScript that modern phones do not need.

Desktop scores 53 but mobile only 22. A gap that wide usually means heavy scripts and images that hit phones hardest.

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 11.5 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “slide_1_alt.jpg”.

The page becomes fully interactive after 19.7 s. Good is under 3.8 s.

Visually, the page fills in at 10.3 s (Speed Index). Good is under 3.4 s.

The first text or image appears after 4.0 s on a phone. Good is under 1.8 s.

The layout shifts by 0.348 while loading, so content jumps under the reader's thumb. Good is under 0.1.

Scripts block taps and scrolling for 791 ms in total while the page loads. Good is under 200 ms.

Real visitors wait 210 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

For real visitors the layout shifts by 0.15 (75th percentile). Good is under 0.1.

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 94 ms to 153 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

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

Your homepage downloads 4.0 MB in 396 requests on a phone: scripts 1.5 MB (73), other files 1.3 MB (252) and images 601 KiB (37). Under 2 MB keeps phones on slow connections fast.

1 image (65 KiB) is 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 1.13 g of CO₂e: 135.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

2 elements hidden from screen readers can still receive keyboard focus.

1 text element doesn't have enough contrast against the background to read easily, especially outdoors on a phone.

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

<html> element must have a lang attribute: 1 element on the page fails this check, rated serious by axe-core.

All page content should be contained by landmarks: 2 elements on the page fail this check, rated moderate by axe-core.

Alternative text of images should not be repeated as text: 13 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.

The <html> element has no lang attribute, so screen readers may read the page in the wrong voice and accent.

Headings skip levels (h3 → h5), which makes the page harder to scan with a screen reader.

Your title is 90 characters, so Google will cut it off around 60: “Jaspertronics - Original Replacement Projector Lamps TV Lamps Stage La – Jaspertronics.com”.

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

Your meta description is 288 characters; Google truncates after about 160, so the end of your pitch is cut.

1 link has no real href, so search engines can't follow it.

Your <h1> is empty.

No twitter:card tag. X falls back to Open Graph, which is set, so this is minor.

The homepage links to 94 pages on jaspertronics.com and 5 external pages.

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.

We fetched 15 pages linked from your homepage (of 72 found) and read each the way a search engine does.

The page uses 1 deprecated browser API that will stop working in future browsers (“Synchronous `XMLHttpRequest` on the main thread is deprecated because of its detrimental effects to…”).

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

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

Large scripts ship without source maps.

1 image is served at too low a resolution for sharp phone screens.

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.

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.

The homepage carries about 681 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Meta Pixel and Microsoft Ads and 2 mores (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 22 cookies, 1 of them by other companies (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 47 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.