designlab.com website review

4 files block the first paint until they finish downloading. Deferring or inlining them could save about 3.2 s.

8 third-party services load with your homepage (Google Tag Manager, website-files.com and Facebook and others), adding 1.5 MB and 943 ms of main-thread time.

Your mobile performance score is 56 (desktop: 57). Pages that score under 90 lose visitors before the first paint.

21 files are served with short cache lifetimes, so returning visitors download them again (455 KiB).

About 80 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

Google Tag Manager costs a phone 436 ms of main-thread work and 701 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.

About 444 KiB of JavaScript is downloaded but never used on this page.

A phone's processor spends 2.4 s on main-thread work while loading, 1.0 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

website-files.com costs a phone 155 ms of main-thread work and 397 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.

4 images could be 76 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 150 ms faster on a phone.

7 long tasks block the main thread while loading, the longest for 201 ms. During a long task the page ignores taps.

Polyfills for old browsers add 41 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.

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.

The page becomes fully interactive after 15.6 s. Good is under 3.8 s.

Your largest element takes 5.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Build the skills that matter most in an AI-powered world—fr…”.

The first text or image appears after 4.1 s on a phone. Good is under 1.8 s.

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

Real visitors see the first content after 2.1 s (75th percentile). Good is under 1.8 s.

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

Scripts block taps and scrolling for 340 ms in total while the page loads. Good is under 200 ms.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 178 ms to 165 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

6a0225929ecbf13b940801c3_output-onlinepngtools (15)-p-500.we is on the first screen but marked loading="lazy", so the browser waits before fetching it and the page looks finished later. Load it eagerly (and give it fetchpriority="high" if it is the main image).

3 images further down the page (94 KiB) 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 0.53 g of CO₂e: 63.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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: 5 elements on the page fail this check, rated moderate by axe-core.

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

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

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

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

The homepage links to 155 pages on designlab.com and 24 external pages.

There is no /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.

/advanced/ai-product-design-certification has no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 57 found) and read each the way a search engine does.

1 link to other sites is dead, for example https://www.linkedin.com/school/designlab/ (999).

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.

1 link go through two or more redirects, for example https://help.designlab.com/.

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.

designlab.com 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.

designlab.com'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.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

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

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 1,289 words of visible text.

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

Your SPF record doesn't end in -all or ~all, so it doesn't stop other servers sending as you: “v=spf1 include:mail.zendesk.com include:_spf.google.com include:emsd1.com include:43533357.spf01.hubspotemail.net ?all”.

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.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, HubSpot and LinkedIn Insight and 3 mores (measured from a US location before any click). A consent tool (HubSpot cookie banner) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 13 cookies (measured from a US location before any click).

Loading the homepage contacts 35 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.