Synapse Communication | Agence Web & Communication au Luxembourg
Unclaimed profileAgence de Communication web & Print au Luxembourg
Notre agence de communication au Luxembourg vous accompagne dans la création et la mise en place de stratégies de communication efficaces.
Web health
61/100
measured 25/10/2026
Issues found
34
on their own site
Reviews
0
from clients on Dr Urls
What Dr Urls found on synapse-com.lu
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.
- highMissing landmark elements
WCAG 1.3.1 requires that page structure is programmatically determinable.
- highSlow server response time (TTFB > 3s)
Page speed is a confirmed Google ranking factor, and TTFB is the foundational component.
- highTime to First Byte (TTFB) is slow
TTFB directly impacts all subsequent loading metrics.
- highToo many HTTP requests per page
Each HTTP request incurs overhead from DNS lookup, TCP connection, TLS handshake, and server processing.
- 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.
- mediumForm inputs missing associated labels
Unlabelled form fields are unusable for screen reader users, who represent a significant portion of potential customers.
- mediumForm inputs missing autocomplete attribute
WCAG 1.3.5 requires input purpose to be programmatically determined for inputs collecting user information.
- mediumHTML lang attribute does not match content language
Conflicting language signals confuse search engines about which language the page is written in, potentially causing it to appear in wrong-language search results.
- mediumImage file too large (>500 KB)
Images typically account for 50-75% of a page's total weight.
- 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 15 more. 5 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 synapse-com.lu's public pages. Nothing here is taken from third-party listings.