Concept Factory
Unclaimed profileAgence de communication full service Luxembourg
Concept Factory est une agence luxembourgeoise de communication full service depuis 1995. L’agence couvre tous les domaines du marketing et de la communication. Nos bureaux sont situés à Bonnevoie, 21 rue de Pont Rémy L-2423 Luxembourg. Contactez-nous ou rendez-nous visite !
Web health
39/100
measured 21/10/2026
Issues found
43
on their own site
Reviews
0
from clients on Dr Urls
What Dr Urls found on conceptfactory.lu
From the audit of their public home page on 21/10/2026, 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.
- mediumAbove-fold images not prioritized
The Largest Contentful Paint (LCP) element is often a hero image.
- mediumCache-Control header missing
Proper caching prevents browsers from re-downloading unchanged resources, dramatically improving repeat visit performance.
- mediumDuplicate ID attributes found
Duplicate IDs cause label elements, aria-labelledby, aria-describedby, and fragment link targets to associate with the wrong element.
- mediumIcon-only button missing aria-label
Icon-only buttons are extremely common in modern UIs (hamburger menus, close buttons, search icons), but without aria-labels, they are completely opaque to screen reader users.
- 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.
- mediumLink has empty anchor text
Anchor text is one of the strongest signals search engines use to understand the content of the linked page.
- mediumMissing canonical tag
Canonical tags are the strongest signal you can send to search engines about which URL should be indexed when multiple URLs serve similar content.
- mediumNo structured data (schema.org) found
Structured data enables rich results (star ratings, FAQ dropdowns, recipe cards, product prices, breadcrumbs, etc.) that dramatically increase click-through rates — some rich resu…
- mediumOpen Graph og:image tag missing
Social media posts with images receive significantly more engagement than text-only posts.
- 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.
And 19 more. 6 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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Figures on this page come from Dr Urls crawling conceptfactory.lu's public pages. Nothing here is taken from third-party listings.