adsystem.pl website review

Your mobile performance score is 77 (desktop: 64). Pages that score under 90 lose visitors before the first paint.

138 files are served with short cache lifetimes, so returning visitors download them again (584 KiB).

8 third-party services load with your homepage (Google Tag Manager, Facebook and Bing Ads and others), adding 892 KiB and 583 ms of main-thread time.

About 367 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 150 ms faster on a phone.

8 files block the first paint until they finish downloading. Deferring or inlining them could save about 500 ms.

Google Tag Manager costs a phone 375 ms of main-thread work and 579 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.

The page has 1,580 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

8 long tasks block the main thread while loading, the longest for 185 ms. During a long task the page ignores taps.

7 images could be 174 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Polyfills for old browsers add 12 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 12.3 s. Good is under 3.8 s.

Visually, the page fills in at 6.8 s (Speed Index). Good is under 3.4 s.

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 156 ms to 197 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your largest element takes 3.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Nasza witryna wykorzystuje pliki cookies (ciasteczka) w cel…”. Most of its time is element render delay (3.5 s).

Scripts block taps and scrolling for 260 ms in total while the page loads. Good is under 200 ms.

The first text or image appears after 2.0 s on a phone. Good is under 1.8 s.

Your homepage downloads 4.5 MB in 164 requests on a phone: media 2.7 MB (1), scripts 1.1 MB (81) and images 575 KiB (56). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 1.28 g of CO₂e: 153.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

5 buttons have no accessible name, so screen readers announce just “button”.

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

All page content should be contained by landmarks: 35 elements on the page fail this check, rated moderate by axe-core.

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.

2 form fields have no label, so screen readers announce an empty box and autofill guesses.

ARIA role should be appropriate for the element: 4 elements on the page fail this check, rated minor by axe-core.

Alternative text of images should not be repeated as text: 4 elements on the page fail this check, rated minor by axe-core.

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

No Open Graph image (also missing: og:title, og:description), so links shared on LinkedIn, Slack or Facebook show no preview picture.

No favicon is declared in the HTML, so browser tabs and Google's mobile results may show a generic icon.

No twitter:card tag. X falls back to Open Graph, which is incomplete here.

The homepage links to 97 pages on adsystem.pl and 13 external pages.

/program-partnerski-adpro is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.

/kontakt and /support have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 56 found) and read each the way a search engine does.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

No Content-Security-Policy header, the main browser-side defence against injected scripts.

Neither X-Frame-Options nor a CSP frame-ancestors policy is set, so any site can embed yours in a frame.

X-Content-Type-Options: nosniff is missing, so browsers may guess file types.

No Referrer-Policy header, so full URLs can leak to the sites you link to.

No Permissions-Policy header to switch off camera, microphone and location for embedded content.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

adsystem.pl has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

adsystem.pl's DNS answers are not signed. DNSSEC stops attackers forging them to send visitors or email elsewhere; most registrars switch it on in a click, though most sites still run without it.

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

We found no call-to-action buttons or links (such as “Book a demo” or “Get a quote”) anywhere on the homepage.

Social proof on the homepage: 1 customer or partner logo. Pairing it with named testimonials or customer logos makes it far more convincing.

There is no form on the homepage, so every lead has to click through to another page first.

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 727 words of visible text.

DMARC is set to p=none, so mail pretending to be adsystem.pl is still delivered. Add a report address, check the reports, then move to quarantine.

Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.

Opening the homepage sets 3 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.