https://www.wellnesscalmspaprive.be
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
96
GRADE
A
FIX
0
REVIEW
3
PASS
20
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
98
100
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.04 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.59 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
154 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.10 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
1.59 s
Page Load Progression
375 ms
750 ms
1.1 s 1.5 s 1.9 s 2.2 s 2.6 s 3.0 sChecks
2620 PASS 3 REVIEW
CJS Execution CostAction1000ms total JS executionREVIEW
JS Execution Cost
Action1000ms total JS execution
1000ms total JS execution
Warning::
https://www.wellnesscalmspaprive.be/: 647ms CPU time
Warning::
Unattributable: 279ms CPU time
Info::
https://www.wellnesscalmspaprive.be/fetes.js?v=c61...: 74ms CPU time
Main Thread Breakdown
Other 34% Style & Layout 31% Script Evaluation 23% Parse HTML & CSS 6% Rendering 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.wellnesscalmspaprive.be/ | 647ms | 166ms | 8ms | 1st |
| Unattributable | 279ms | 14ms | 0ms | 1st |
| https://www.wellnesscalmspaprive.be/fetes.js?v=c6116a66 | 74ms | 16ms | 4ms | 1st |
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
HTTP Caching
public, max-age=0, must-revalidate
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
ETag present — enables conditional (304) responses
Cache-Control
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Page Weight Budget353 KB transferred, 27 requestsPASS
Page Weight Budget
353 KB transferred, 27 requests
353 KB transferred, 27 requests
Info::
Page weighs 501 KB (353 KB transferred)
Info::
27 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
353 KB transferred
27 requests
0.07 g CO2 per page load
Images 271.6 KiB 77%
JavaScript 31.1 KiB 9%
CSS 23.5 KiB 7%
HTML 17.4 KiB 5%
Other 4.4 KiB 1%
Other 3.4 KiB 1%
Other 1.5 KiB 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party Impact1% third-party, 0 ms blockingPASS
Third-Party Impact
1% third-party, 0 ms blocking
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (4.4 KiB of 352.9 KiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
AImage Optimization10 images, 0 KB saveablePASS
Image Optimization
10 images, 0 KB saveable
10 images, 0 KB saveable
Info::
All images are well-optimized
10 images 272 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+Font LoadingNo web fonts (system fonts)PASS
Font Loading
No web fonts (system fonts)
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+JS Bundles8 scripts, 0 KB unusedPASS
JS Bundles
8 scripts, 0 KB unused
8 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.wellnesscalmspaprive.be/suivi.js?v=426f4451 | 3 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/site.js?v=426f4451 | 9 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/config-site.js?v=426f4451 | 2 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/consentement.js?v=426f4451 | 1 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/anti-robot.js?v=426f4451 | 2 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/chat.js?v=426f4451 | 2 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/presence.js?v=426f4451 | 1 KB | — | ✓ | 1st |
| https://www.wellnesscalmspaprive.be/fetes.js?v=c6116a66 | 11 KB | — | ✓ | 1st |
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+Document CompressionDocument response uses brotliPASS
Document Compression
Document response uses brotli
Document response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0, must-revalidate
AServer Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
`ETag` present -- conditional GET supported
A+Page Weight Inventory27 resources · 353 KB · 0 KB savings availablePASS
Page Weight Inventory
27 resources · 353 KB · 0 KB savings available
27 resources · 353 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 353 KB
Info::
4 third-party resources (1% of weight)
27 resources · 352.9 KiB · 4 third-party Within 1MB page-weight target
Image 78% · 275.0 KiB
JavaScript 9% · 31.1 KiB
CSS 7% · 23.5 KiB
Document 5% · 17.4 KiB
Other 2% · 5.9 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 27 resources | 352.9 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
A+JavaScript BlockingNo render-blocking JS or document.write usage detectedPASS
JavaScript Blocking
No render-blocking JS or document.write usage detected
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
CSS Performance Depth
No CSS performance depth issues detected
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Asset CompressionNo text asset hosts to measureINFO
Asset Compression
No text asset hosts to measure
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall27 requests over 40442msINFO
Network Waterfall
27 requests over 40442ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization12 images, 166 KB total, 49 KB wastedINFO
Image Optimization
12 images, 166 KB total, 49 KB wasted
Image Optimization Audit
Total Images
12
Total Size
166 KB
Oversized
1
Wasted
49 KB
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.