proglow.it website review

About 711 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 3.3 s faster on a phone.

15 files are served with short cache lifetimes, so returning visitors download them again (381 KiB).

Shopify costs a phone 1.3 s of main-thread work and 181 KiB of downloads while your page loads. That alone is enough to make taps feel slow. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

Your mobile performance score is 30. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 7.2 s on main-thread work while loading, 4.0 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

The page has 3,033 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

8 third-party services load with your homepage (Shopify, proglow.de and growave.io and others), adding 1.5 MB and 2.9 s of main-thread time.

6 files block the first paint until they finish downloading. Deferring or inlining them could save about 800 ms.

8 images could be 365 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 300 ms faster on a phone.

proglow.de costs a phone 545 ms of main-thread work and 400 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.

growave.io costs a phone 376 ms of main-thread work and 237 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.

Facebook costs a phone 271 ms of main-thread work and 282 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.

20 long tasks block the main thread while loading, the longest for 296 ms. During a long task the page ignores taps.

Polyfills for old browsers add 82 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 200 ms faster on a phone.

31 KiB JavaScript is shipped twice across bundles. Google estimates it would make the page about 200 ms faster on a phone.

About 39 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.

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

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

3 KiB could be saved by minifying JavaScript.

2 KiB could be saved by minifying CSS.

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.

Real visitors wait 6.0 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 6.2 s (75th percentile). Good is under 1.8 s.

Your largest element takes 21.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image.

The page becomes fully interactive after 21.9 s. Good is under 3.8 s.

Visually, the page fills in at 13.5 s (Speed Index). Good is under 3.4 s.

The first text or image appears after 4.7 s on a phone. Good is under 1.8 s.

Scripts block taps and scrolling for 1.6 s in total while the page loads. Good is under 200 ms.

Real visitors wait 248 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 212 ms to 272 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Real visitors wait 856 ms for your server to start answering (75th percentile). Good is under 800 ms.

Your homepage downloads 4.1 MB in 259 requests on a phone: scripts 1.9 MB (105), images 1.2 MB (46) and other files 675 KiB (88). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 1.16 g of CO₂e: 139.0 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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

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

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

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

Headings skip levels (h1 → h3, h2 → h5 and h2 → h5), which makes the page harder to scan with a screen reader.

Your meta description is 240 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found (BreadcrumbList, Organization and WebSite) but with 1 problem, for example “Organization: url points at a different host (https://proglow.de)”.

The homepage links to 283 pages on proglow.it and 7 external pages.

We fetched 15 pages linked from your homepage (of 136 found) and read each the way a search engine does.

3 errors were logged to the browser console during Google's test (“Failed to load resource: the server responded with a status of 400 (Bad Request)”).

1 image is displayed at the wrong aspect ratio, so it looks stretched or squashed.

Social proof on the homepage: 8 testimonial or review blocks. Pairing it with named testimonials or customer logos makes it far more convincing.

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 1,192 words of visible text.