yellow.dk website review

About 322 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.3 s faster on a phone.

Your mobile performance score is 47. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

6 files are served with short cache lifetimes, so returning visitors download them again (2.7 MB).

7 third-party services load with your homepage (Facebook, Google Tag Manager and cookieinformation.com and others), adding 11.4 MB and 233 ms of main-thread time.

storyblok.com costs a phone 0 ms of main-thread work and 8.5 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.

2 files block the first paint until they finish downloading. Deferring or inlining them could save about 550 ms.

Amazon Web Services costs a phone 0 ms of main-thread work and 2.5 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.

A phone's processor spends 2.1 s on main-thread work while loading, 1.1 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Polyfills for old browsers add 35 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 200 ms faster on a phone.

7 images could be 216 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

6 long tasks block the main thread while loading, the longest for 108 ms. During a long task the page ignores taps.

The layout shifts by 1 while loading, so content jumps under the reader's thumb. Good is under 0.1.

Your largest element takes 6.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “We and our business partners use technologies, including co…”.

The page becomes fully interactive after 7.5 s. Good is under 3.8 s.

Visually, the page fills in at 5.8 s (Speed Index). Good is under 3.4 s.

Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.

Your homepage downloads 12.5 MB in 61 requests on a phone: media 11.0 MB (6), scripts 796 KiB (16) and images 547 KiB (17). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 3.55 g of CO₂e: 425.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

1 button has no accessible name, so screen readers announce just “button”.

Your title is only 13 characters: “Yellow Umwelt”. Between 30 and 65 characters leaves room to say what you do and for whom.

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

Your meta description is only 39 characters: “We create strategic with a digital core”. 70 to 160 characters is enough to sell the click.

No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.

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

There is no robots.txt at yu.agency/robots.txt, the first file search crawlers ask for.

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

The homepage links to 17 pages on yellow.dk and 0 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.

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.

/work, /yu-way, /yu-life, /yu-contact, /work/carlsberg and /work/dsb and 5 others use the same meta description. A description written for each page earns more clicks.

/yu-way and /yu-life have no <h1> headline, so visitors and search engines get no clear main topic.

/work and /yu-contact have under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.

/yu-contact, /work/dsb, /work/stillstrom, /work/carlsberg-nordlyst, /work/dansk-retursystem and /work/novo-holdings and 2 others took over 3 s to send their HTML from our server.

We fetched 12 pages linked from your homepage and read each the way a search engine does.

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

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

Large scripts ship without source maps.

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

yu.agency 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.

yu.agency'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 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 has only about 94 words of visible text; thin pages give Google and first-time buyers little to go on.

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.

yellow.dk has no DMARC record, so nothing tells receivers what to do with mail that fails SPF or DKIM. Gmail and Yahoo require DMARC from bulk senders.

We found no DKIM key on the selectors the big email providers use. If you send through one of them, turning on DKIM signing improves delivery.

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 Analytics, Google Tag Manager and Meta Pixel (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.

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