A fast website with PageSpeed 100
Our website dzhus-seo.de on WordPress: 100 out of 100 for performance and SEO in Google PageSpeed on mobile, content visible after 1.0 seconds.
- Client: Own project
- Service: Website development
- Technology: WordPress, custom theme, PHP, Polylang, WebP, CDN
Starting point
The website has to reach customers in Germany in four languages and be found on Google. Many small business websites load slowly on smartphones because they are built with heavy page builders, lots of plugins and large images. We wanted to show that it can be done differently – on our own website.
What we did
- Lightweight custom theme instead of a page builder: all JavaScript on the home page is 4 KB, styles are inlined into the page
- No external services on load: no third-party fonts, videos or tracking scripts – which also helps with data protection
- Images in WebP format at the right size, lower sections load only when scrolling
- No jumping page: space for animated elements is reserved in advance
- Proper caching: pages always up to date, images and styles cached for a year, delivered via CDN
- Technical SEO: four language versions with hreflang, XML sitemap with 352 URLs, short page titles, alt texts for 196 images, schema.org markup
Result
Measured with Google PageSpeed Insights on 7 November 2026 on a case study page of the website, mobile (Lighthouse 13.6, throttled 4G):
- Performance, accessibility, best practices and SEO: 100 out of 100 each
- SEO score of the home page from 58 to 100 – after fixing caching and page titles
- first content after 1.0 s, largest element after 1.1 s, Speed Index 1.4 s
- blocking time 0 ms, layout shift 0

Why it matters for Google
Google uses loading speed and Core Web Vitals as one of its ranking factors. A fast website alone does not guarantee top positions, but it never holds good content back: fewer visitors leave, and Google can crawl the pages faster. This is exactly how we build websites for clients.
A similar goal?
Free initial consultationSimilar case studies
More projects from the same field – with the starting point, actions and results.
Online shop in Germany: from zero to around 1,000 visitors from Google a month
New category pages, fixed technical errors and link building – organic traffic grew from almost zero to over 1,000 visits a month in about a year.
Medical centre: three times more clicks from Google
Fixed technical errors, collected the semantics, built a landing page for every specialty and links – daily clicks from Google roughly tripled.
Medical centre: from zero to 5,400 visitors from Google a month
Same approach as for the first centre: technical fixes, semantics, a page per specialty and link building – from almost zero to up to 8,000 visits a month in two years.