Der Mario Müller - Webdesigner & Marketingexperte aus Berlin
Unclaimed profileMario Müller aus Berlin · Webdesigner und Marketingexperte seit 2006
Seit 17 Jahren hat Mario Müller weitreichende Erfahrungen in den Bereichen Webdesign, Online-Shops, Social Media Ads, SEA, SEO und Native Ads.
Web health
69/100
measured 22/10/2026
Issues found
25
on their own site
Reviews
0
from clients on Dr Urls
What Dr Urls found on der-mario-mueller.de
From the audit of their public home page on 22/10/2026, worst first. Each links to what it means and how it is fixed.
- highMissing landmark elements
WCAG 1.3.1 requires that page structure is programmatically determinable.
- highTime to First Byte (TTFB) is slow
TTFB directly impacts all subsequent loading metrics.
- mediumImages missing width and height attributes
Missing image dimensions are the leading cause of Cumulative Layout Shift (CLS), a Core Web Vital and ranking factor.
- mediumRender-blocking CSS or JavaScript
Render-blocking resources directly impact First Contentful Paint (FCP) and Largest Contentful Paint (LCP), both Core Web Vitals metrics.
- mediumScripts without async or defer
Synchronous scripts halt HTML parsing while the browser downloads and executes them.
- mediumStylesheets loaded in body
Stylesheets in the body block rendering of subsequent content and can cause visible layout shifts as styles are applied incrementally.
- mediumThin content (too few words)
Google's Helpful Content system explicitly targets thin, low-value pages.
- mediumToo many external CSS stylesheets
Multiple CSS files multiply HTTP requests and increase the total blocking time before the page can render.
- lowCSS files are not minified
Unminified CSS files are larger than necessary, increasing download time and delaying rendering.
- lowExcessive inline CSS
Inline CSS cannot be cached separately by the browser, so it is re-downloaded with every page load.
- lowImages missing responsive srcset
Without srcset, a 1200px wide image is downloaded on a 375px wide mobile screen, wasting bandwidth and slowing load times.
- lowImages not using modern format
WebP images are 25-35% smaller than equivalent JPEG images, and AVIF offers even greater savings.
And 3 more. 7 security findings are not listed on this public page; the site's owner sees them in a full audit after claiming it.
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