PromoMasters SEO Agentur

What Dr Urls found on promomasters.at

From the audit of their public home page on 25/10/2026, worst first. Each links to what it means and how it is fixed.

• medium
  Duplicate ID attributes found

  Duplicate IDs cause label elements, aria-labelledby, aria-describedby, and fragment link targets to associate with the wrong element.

• medium
  Render-blocking CSS or JavaScript

  Render-blocking resources directly impact First Contentful Paint (FCP) and Largest Contentful Paint (LCP), both Core Web Vitals metrics.

• medium
  Scripts without async or defer

  Synchronous scripts halt HTML parsing while the browser downloads and executes them.

• low
  Excessive inline CSS

  Inline CSS cannot be cached separately by the browser, so it is re-downloaded with every page load.

• low
  Excessive inline JavaScript

  Inline JavaScript cannot be cached by the browser and must be parsed and executed every time the page loads.

• low
  Images missing responsive srcset

  Without srcset, a 1200px wide image is downloaded on a 375px wide mobile screen, wasting bandwidth and slowing load times.

• low
  Images not using modern format

  WebP images are 25-35% smaller than equivalent JPEG images, and AVIF offers even greater savings.

• low
  JavaScript files are not minified

  JavaScript is the most expensive resource type per byte because it must be downloaded, parsed, compiled, and executed.

• low
  Key resources not preloaded

  Without preloading, the browser discovers critical resources late in the parsing process, delaying their download.

• low
  X-Content-Type-Options header missing

  Without this header, browsers may interpret files as a different content type than intended, which can lead to XSS attacks when a malicious file is interpreted as executable scrip…

5 security findings are not listed on this public page; the site's owner sees them in a full audit after claiming it.