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plt.nl website review

Visit site (opens in a new tab)Reviewed 18 October 202632 issues · 75 checks

This review found 32 issues worth fixing on plt.nl, 12 of them high impact, across 75 checks. The most urgent: reduce unused JavaScript. Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.

  1. Homepage
  2. Phone render
  3. Links and pages
  4. Google PageSpeed

Google PageSpeed Insights (opens in a new tab), mobile

Real-visitor load time (LCP)75th percentile, phones
1.1 s673 msApr 25Oct 101.1 s
Show as table
DateReal-visitor load time (LCP)
Apr 25, 2026832 ms
May 2, 2026862 ms
May 9, 2026854 ms
May 16, 2026776 ms
May 23, 2026729 ms
May 30, 2026729 ms
Jun 6, 2026726 ms
Jun 13, 2026763 ms
Jun 20, 2026825 ms
Jun 27, 2026854 ms
Jul 4, 2026878 ms
Jul 11, 2026872 ms
Jul 18, 2026879 ms
Jul 25, 2026865 ms
Aug 1, 2026838 ms
Aug 8, 2026841 ms
Aug 15, 2026827 ms
Aug 22, 2026809 ms
Aug 29, 2026803 ms
Sep 5, 2026808 ms
Sep 12, 2026800 ms
Sep 19, 2026838 ms
Sep 26, 2026904 ms
Oct 3, 20261.0 s
Oct 10, 20261.1 s
Real-visitor tap response (INP)75th percentile, phones
156 ms127 msApr 25Oct 10153 ms
Show as table
DateReal-visitor tap response (INP)
Apr 25, 2026139 ms
May 2, 2026137 ms
May 9, 2026136 ms
May 16, 2026130 ms
May 23, 2026132 ms
May 30, 2026135 ms
Jun 6, 2026136 ms
Jun 13, 2026137 ms
Jun 20, 2026140 ms
Jun 27, 2026142 ms
Jul 4, 2026144 ms
Jul 11, 2026145 ms
Jul 18, 2026145 ms
Jul 25, 2026145 ms
Aug 1, 2026143 ms
Aug 8, 2026145 ms
Aug 15, 2026145 ms
Aug 22, 2026147 ms
Aug 29, 2026147 ms
Sep 5, 2026146 ms
Sep 12, 2026146 ms
Sep 19, 2026147 ms
Sep 26, 2026150 ms
Oct 3, 2026152 ms
Oct 10, 2026153 ms

Chrome UX Report (opens in a new tab): real Chrome visitors over rolling 28-day periods.

One score from every part of this review. How it works

Full-page screenshot of plt.nl (desktop) rendered by Google PageSpeed Insights

How it loaded on a phone

  1. plt.nl at 0.8 s0.8 s
  2. plt.nl at 1.5 s1.5 s
  3. plt.nl at 2.3 s2.3 s
  4. plt.nl at 3.1 s3.1 s
  5. plt.nl at 3.9 s3.9 s
  6. plt.nl at 4.6 s4.6 s
  7. plt.nl at 5.4 s5.4 s
  8. plt.nl at 6.2 s6.2 s

Speed

11 to fix33
  • Reduce unused JavaScript

    2.3 s · 822 KiB

    About 822 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.3 s faster on a phone.

  • Mobile performance score: 33

    33/100

    Your mobile performance score is 33 (desktop: 61). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

  • 5 third-party services on the page

    5 third-party services load with your homepage (Google Tag Manager, issuu and Cookiebot and others), adding 3.0 MB and 834 ms of main-thread time.

  • Improve image delivery

    150 ms · 545 KiB

    8 images could be 545 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.

  • Google Tag Manager adds 520 ms

    520 ms

    Google Tag Manager costs a phone 520 ms of main-thread work and 687 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.

  • Use efficient cache lifetimes

    400 ms · 118 KiB

    10 files are served with short cache lifetimes, so returning visitors download them again (118 KiB).

  • issuu adds 250 ms

    250 ms

    issuu costs a phone 250 ms of main-thread work and 2.2 MB 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.

  • Reduce unused CSS

    150 ms · 323 KiB

    About 323 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.

  • Font display

    400 ms

    Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 400 ms).

  • Main-thread work: 3.0 s

    A phone's processor spends 3.0 s on main-thread work while loading, 1.1 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

  • 1,953 HTML elements

    The page has 1,953 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

  • 12 long tasks on the main thread

    12 long tasks block the main thread while loading, the longest for 187 ms. During a long task the page ignores taps.

  • Phones get a much slower page than desktops

    Desktop scores 61 but mobile only 33. A gap that wide usually means heavy scripts and images that hit phones hardest.

  • Chained critical requests

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

  • Forced reflow

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

1 checks passed
  • Server response: 3 ms

    3 ms

    Your server sent the HTML in 3 ms, well inside Google's 600 ms guideline.

Core Web Vitals

7 to fix100
  • Largest Contentful Paint: 11.1 s

    11.1 s

    Your largest element takes 11.1 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “LisaOstermann_DeBaas bewerkt”.

  • Cumulative Layout Shift: 0.933

    0.933

    The layout shifts by 0.933 while loading, so content jumps under the reader's thumb. Good is under 0.1.

  • Time to Interactive: 14.6 s

    14.6 s

    The page becomes fully interactive after 14.6 s. Good is under 3.8 s.

  • Speed Index: 7.4 s

    7.4 s

    Visually, the page fills in at 7.4 s (Speed Index). Good is under 3.4 s.

  • Largest content (LCP) got 23% slower for real visitors

    +23%

    Over the last 25 four-week periods to 2026-10-10, real Chrome visitors' largest content (lcp) went from 0.8 s to 1.1 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

  • Total Blocking Time: 441 ms

    441 ms

    Scripts block taps and scrolling for 441 ms in total while the page loads. Good is under 200 ms.

  • 18 images without width and height

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

  • Tap response (INP) got 11% slower for real visitors

    +11%

    Over the last 25 four-week periods to 2026-10-10, real Chrome visitors' tap response (inp) went from 139 ms to 153 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

7 checks passed
  • Passes Core Web Vitals for real visitors

    Real Chrome users on phones pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)).

  • Real-user LCP: 1.4 s

    1.4 s

    Real visitors wait 1.4 s for the largest content to appear (75th percentile). Good is under 2.5 s.

  • Real-user INP: 199 ms

    199 ms

    Real visitors wait 199 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

  • Real-user CLS: 0.00

    0.00

    For real visitors the layout shifts by 0.00 (75th percentile). Good is under 0.1.

  • Real-user FCP: 0.9 s

    0.9 s

    Real visitors see the first content after 0.9 s (75th percentile). Good is under 1.8 s.

  • Real-user TTFB: 467 ms

    467 ms

    Real visitors wait 467 ms for your server to start answering (75th percentile). Good is under 800 ms.

  • First Contentful Paint: 0.9 s

    0.9 s

    The first text or image appears after 0.9 s, inside the 1.8 s “good” threshold.

Images and page weight

1 to fix33
  • Page weight: 4.9 MB in 88 requests

    4.9 MB

    Your homepage downloads 4.9 MB in 88 requests on a phone: images 2.3 MB (26), scripts 1.9 MB (25) and stylesheets 338 KiB (5). Under 2 MB keeps phones on slow connections fast.

  • About 1.4 g of CO₂ per visit

    1.38 g

    By the Sustainable Web Design model, a visit to your homepage emits about 1.38 g of CO₂e: 165.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Accessibility

6 to fixGoogle 9467
  • Documents must have <title> element to aid in navigation (1 element)

    Documents must have <title> element to aid in navigation: 1 element on the page fails this check, rated serious by axe-core.

  • <html> element must have a lang attribute (1 element)

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

  • No main landmark

    The page has no <main> landmark, so screen-reader users cannot jump straight to the content.

  • All page content should be contained by landmarks (1 element)

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

  • 16 text elements with low contrast

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

  • Orphan list items

    Some list items are not inside a list.

  • Elements with visible text labels do not have matching accessible names.

    Elements with visible text labels do not have matching accessible names. (1 element).

2 checks passed
  • Every image has alt text

    All 47 images in the HTML carry an alt attribute.

  • 5 automated accessibility rules passed

    axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 9 WCAG 2.2 A/AA and best-practice rules on the phone render: 5 passed and 4 failed. Automated rules catch about a third of accessibility problems; the rest need manual testing.

SEO

1 to fixGoogle 10097
  • No social preview image

    No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

  • 91 internal links, 12 external

    The homepage links to 91 pages on plt.nl and 12 external pages.

7 checks passed
  • Meta description: 136 characters

    Your meta description is 136 characters: “PLT is het theater van Zuid-Limburg. Betrokken, bevlogen en opwindend. We brengen podiumkunst tot leven in Heerlen, Ker…”.

  • One H1 headline

    Your main headline reads: “Drie theaters, één aanbod”.

  • Title: 56 characters

    Your title is a healthy 56 characters: “Theater Heerlen, Theater Kerkrade & Toon Hermans Theater”.

  • Canonical URL set

    The canonical URL is https://www.plt.nl/.

  • Structured data in place

    Structured data found: LocalBusiness.

  • robots.txt in place

    robots.txt is in place and points crawlers to your sitemap.

  • XML sitemap found

    Your XML sitemap is reachable at https://www.plt.nl/sitemap.xml.

AI search readiness

2 to fix63
  • Snippets are switched off

    The robots meta tag says “noarchive, nosnippet, notranslate, noimageindex”, which tells Google, Bing and the AI answers built on them not to quote this page.

  • Organization data is thin (3 of 6 facts)

    Your Organization JSON-LD is missing logo, sameAs (social profiles) and description. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

  • Opted out of AI training for 1 crawler

    robots.txt blocks CCBot, which collect pages to train models. That's a legitimate choice and doesn't by itself stop the site appearing in AI answers, which the crawlers above handle.

2 checks passed
  • AI answer engines may read the site

    Your robots.txt lets the crawlers behind ChatGPT search, Claude and Perplexity read the site and cite it in answers.

  • llms.txt published

    The site publishes https://www.plt.nl/llms.txt (3 KiB, 0 links, though it should open with a “# Title” line), a plain-text guide to the site for AI tools.

Other pages

100
  • 15 internal pages checked

    We fetched 15 pages linked from your homepage (of 64 found) and read each the way a search engine does.

1 checks passed
  • Linked pages load

    12 pages of 15 loaded without an error (the rest turned automated requests away).

Best practices

1 to fixGoogle 9692
  • 2 JavaScript errors while loading

    2 errors were logged to the browser console while the page loaded, for example “Failed to load resource: the server responded with a status of 429 ()”.

  • Browser-reported issues

    Chrome logged issues while loading the page (“Cookie”).

1 checks passed
  • Mobile viewport set

    The page declares a mobile viewport.

Content and conversion

3 to fix72
  • No call to action on the first screen

    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 social proof

    No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

  • Only about 16 words

    The homepage has only about 16 words of visible text; thin pages give Google and first-time buyers little to go on.

  • No opening hours

    The homepage shows no opening hours. If customers visit or call, show when.

  • No map or directions link

    There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

  • No risk reducer

    No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

6 checks passed
  • 2 calls to action

    The homepage has 2 calls to action, for example “Contact” and “Contact & openingstijden”.

  • 6 short forms

    6 short forms (4 fields at most) are right on the homepage, asking for an email.

  • Analytics in place

    Analytics detected: Google Tag Manager.

  • Direct contact links

    Visitors can reach you directly: 4 phone links and 0 email links.

  • Phone number on the homepage

    Your phone number is on the homepage as a tap-to-call link.

  • LocalBusiness structured data

    Your homepage describes the business with LocalBusiness JSON-LD, so search engines and AI assistants can read its address, hours and phone reliably.

Privacy and tracking

  • No consent tool detected

    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.

1 checks passed
  • No known trackers before consent

    No known advertising or analytics trackers load before a visitor clicks anything (measured from a US location before any click).

Security, domain, email and software versions

The security, domain and email checks, software and plugin versions, and any app with a known security problem are visible only to people at plt.nl, because details like these could help someone attack a site. Every review keeps them private, whatever they found.

Upkeep, stack and company

Stack

Analytics
Google Tag Manager

Upkeep, stack, hiring and company data from programmable.info

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This review found 32 issues on plt.nl, including 18 speed issues, 1 SEO issue and 3 conversion gaps. That is the website alone. The full Growth Playbook pairs these findings with what your customers say in public reviews and communities and what your closest competitors do better, then turns everything into at least 20 prioritised ideas, each with the evidence behind it, a step-by-step playbook, a metric and an owner.

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