Skip to content
https://online.secure-logistics.nl

Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
5
REVIEW
6
PASS
12
INFO
4

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
54
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

933 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

14.41 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

837 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.009

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.51 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.

14.41 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 s
Checks
27
12 PASS 6 REVIEW 5 FIX
D
Page Weight Budget
Action
2.4 MB transferred, 25 requests
FIX
2.4 MB transferred, 25 requests
Info::
Page weighs 4.7 MB (2.4 MB transferred)
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
25 HTTP requests
Info::
Estimated 0.50 g CO2 per page load
2.4 MB / 2.4 MB budget
2.4 MB transferred
25 requests
0.50 g CO2 per page load
JavaScript 1.2 MiB 48%
Images 1009.6 KiB 41%
Fonts 154.8 KiB 6%
HTML 55.8 KiB 2%
Other 19.1 KiB 1%
CSS 17.3 KiB 1%
Other 667 B 0%
Other 581 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

D
JS Execution Cost
Action
2081ms total JS execution
FIX
2081ms total JS execution
Warning::
https://online.secure-logistics.nl/nl/chunk-M2IHGP...: 733ms CPU time
Warning::
https://online.secure-logistics.nl/nl/: 697ms CPU time
Warning::
Unattributable: 567ms CPU time
Info::
https://online.secure-logistics.nl/nl/polyfills-EO...: 84ms CPU time
Info::
Third-party scripts: 567ms (27% of total)

Main Thread Breakdown

Other 46% Script Evaluation 42% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://online.secure-logistics.nl/nl/chunk-M2IHGPBY.js733ms692ms5ms1st
https://online.secure-logistics.nl/nl/697ms9ms2ms1st
Unattributable567ms123ms0ms3rd
https://online.secure-logistics.nl/nl/polyfills-EOY4VIPN.js84ms68ms0ms1st
F
JS Bundles
Action
9 scripts, 749 KB unused
FIX
9 scripts, 749 KB unused
Warning::
https://online.secure-logistics.nl/nl/main-3V5GRQY...: 288 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://online.secure-logistics.nl/nl/chunk-M2IHGP...: 250 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://online.secure-logistics.nl/nl/chunk-2XW3SX...: 143 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://online.secure-logistics.nl/nl/chunk-QELMQI...: 47 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://online.secure-logistics.nl/nl/chunk-T4EO4Y...: 20 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 749 KB
749 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://online.secure-logistics.nl/nl/main-3V5GRQY6.js399 KB288 KB (72%)✓1st
https://online.secure-logistics.nl/nl/chunk-M2IHGPBY.js452 KB250 KB (55%)✓1st
https://online.secure-logistics.nl/nl/chunk-2XW3SXL3.js171 KB143 KB (84%)✓1st
https://online.secure-logistics.nl/nl/chunk-QELMQIKR.js72 KB47 KB (65%)✓1st
https://online.secure-logistics.nl/nl/chunk-T4EO4YJD.js50 KB20 KB (40%)✓1st
https://online.secure-logistics.nl/redirect.js1 KB—✓1st
https://online.secure-logistics.nl/nl/chunk-LUW3D3MG.js1 KB—✓1st
https://online.secure-logistics.nl/nl/polyfills-EOY4VIPN.js17 KB—✓1st
https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.js20 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

D
Page Weight Inventory
Action
25 resources · 2.4 MB · 749 KB savings available
FIX
25 resources · 2.4 MB · 749 KB savings available
Warning::
Page weight 2.4 MB exceeds 1 MB target by 1.4 MB
Got: 2.4 MB Expected: ≤ 1 MB
Info::
~749 KB of savings available
Info::
6 third-party resources (7% of weight)
Info::
3 resources over 200KB
25 resources · 2.4 MiB · 6 third-party 1.4 MiB over 1MB target
JavaScript 48% · 1.2 MiB
Image 42% · 1.0 MiB
Font 6% · 154.8 KiB
Document 2% · 55.8 KiB
CSS 1% · 17.3 KiB
Other 0% · 1.5 KiB

~748.6 KiB of savings available

Remove unused JavaScript: 748.6 KiB
D
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
3 images, 0 KB saveable
REVIEW
3 images, 0 KB saveable
Warning::
https://online.secure-logistics.nl/nl/assets/img/l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://online.secure-logistics.nl/nl/assets/img/l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
3 images 1010 KB
0 oversized -0 KB
3 legacy format
2 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
7% third-party, 0 ms blocking
PASS
7% third-party, 0 ms blocking
Info::
Third-party code accounts for 7% of page weight (175.0 KiB of 2.4 MiB)
Info::
Third-party blocking time is low (0 ms)
93%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
4 fonts (155 KB)
PASS
4 fonts (155 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

155 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 933 ms LCP 14.4 shttps://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecg.woff2pxiEyp8kv8JHgFVrJJfecg.... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecg.woff2 — 7.7 KiB — 94 ms — font-display: swaphttps://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2flUhRq6tzZclQEJ-Vdg-Iui... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2 — 125.4 KiB — 114 ms — font-display: swaphttps://fonts.gstatic.com/s/syne/v24/8vIS7w4qzmVxsWxjBZRjr0FKM_3mvg6jTY8.woff28vIS7w4qzmVxsWxjBZRjr0F... https://fonts.gstatic.com/s/syne/v24/8vIS7w4qzmVxsWxjBZRjr0FKM_3mvg6jTY8.woff2 — 14.0 KiB — 54 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFQ.woff2pxiByp8kv8JHgFVrLCz7Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFQ.woff2 — 7.7 KiB — 53 ms — font-display: swap
pxiEyp8kv8JHgFVrJJfecg.... woff2 swap
Size 8 KB
Load time 94 ms
Start 210 ms
Risk FOUT — text flashes from fallback to web font
flUhRq6tzZclQEJ-Vdg-Iui... woff2 swap
Size 125 KB
Load time 114 ms
Start 630 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
8vIS7w4qzmVxsWxjBZRjr0F... woff2 swap
Size 14 KB
Load time 54 ms
Start 630 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLCz7Z1x... woff2 swap
Size 8 KB
Load time 53 ms
Start 660 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~63 KB and ~126 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
1
preload
—
dns-prefetch
—
prefetch
—

1 resource hints configured

A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
10 `@font-face` rule(s) without `font-display` -- causes FOIT
An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.
Network Waterfall
25 requests over 801ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 933 ms LCP 14.4 shttps://online.secure-logistics.nl// https://online.secure-logistics.nl/ — 200 — 530 B — 90 ms — h2https://online.secure-logistics.nl/redirect.js/redirect.js https://online.secure-logistics.nl/redirect.js — 200 — 559 B — 32 ms — h2https://online.secure-logistics.nl/nl//nl/ https://online.secure-logistics.nl/nl/ — 200 — 55.3 KiB — 56 ms — h2https://challenges.cloudflare.com/turnstile/v0/api.jschallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/api.js — 302 — 266 B — 67 ms — h3https://online.secure-logistics.nl/nl/pwa-manifest.json/nl/pwa-manifest.json https://online.secure-logistics.nl/nl/pwa-manifest.json — 200 — 581 B — 85 ms — h2https://online.secure-logistics.nl/nl/styles-PGICEA6N.css/nl/styles-PGICEA6N.css https://online.secure-logistics.nl/nl/styles-PGICEA6N.css — 200 — 17.3 KiB — 34 ms — h2https://online.secure-logistics.nl/nl/chunk-T4EO4YJD.js/nl/chunk-T4EO4YJD.js https://online.secure-logistics.nl/nl/chunk-T4EO4YJD.js — 200 — 50.3 KiB — 57 ms — h2https://online.secure-logistics.nl/nl/chunk-2XW3SXL3.js/nl/chunk-2XW3SXL3.js https://online.secure-logistics.nl/nl/chunk-2XW3SXL3.js — 200 — 170.8 KiB — 85 ms — h2https://online.secure-logistics.nl/nl/chunk-QELMQIKR.js/nl/chunk-QELMQIKR.js https://online.secure-logistics.nl/nl/chunk-QELMQIKR.js — 200 — 72.0 KiB — 85 ms — h2https://online.secure-logistics.nl/nl/chunk-M2IHGPBY.js/nl/chunk-M2IHGPBY.js https://online.secure-logistics.nl/nl/chunk-M2IHGPBY.js — 200 — 452.2 KiB — 143 ms — h2https://online.secure-logistics.nl/nl/chunk-LUW3D3MG.js/nl/chunk-LUW3D3MG.js https://online.secure-logistics.nl/nl/chunk-LUW3D3MG.js — 200 — 963 B — 55 ms — h2https://online.secure-logistics.nl/nl/polyfills-EOY4VIPN.js/nl/polyfills-EOY4VIPN.js https://online.secure-logistics.nl/nl/polyfills-EOY4VIPN.js — 200 — 17.1 KiB — 105 ms — h2https://online.secure-logistics.nl/nl/main-3V5GRQY6.js/nl/main-3V5GRQY6.js https://online.secure-logistics.nl/nl/main-3V5GRQY6.js — 200 — 398.9 KiB — 146 ms — h2https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecg.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecg.woff2 — 200 — 7.7 KiB — 94 ms — h3https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.jschallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.js — 200 — 20.0 KiB — 44 ms — h3https://online.secure-logistics.nl/SecureOnline/Api/AppInfo//SecureOnline/Api/AppInfo/ https://online.secure-logistics.nl/SecureOnline/Api/AppInfo/ — 200 — 611 B — 36 ms — h2https://online.secure-logistics.nl/SecureOnline/Api/IpAddressIsLocal//SecureOnline/Api/IpAddressIsLocal/ https://online.secure-logistics.nl/SecureOnline/Api/IpAddressIsLocal/ — 200 — 56 B — 31 ms — h2https://online.secure-logistics.nl/nl/assets/img/logo_dark.svg/nl/assets/img/logo_dark.svg https://online.secure-logistics.nl/nl/assets/img/logo_dark.svg — 200 — 16.5 KiB — 34 ms — h2https://online.secure-logistics.nl/nl/assets/img/logo_xs-id.svg/nl/assets/img/logo_xs-id.svg https://online.secure-logistics.nl/nl/assets/img/logo_xs-id.svg — 200 — 24.1 KiB — 34 ms — h2https://online.secure-logistics.nl/nl/assets/img/background/1.jpg/nl/assets/img/background/1.jpg https://online.secure-logistics.nl/nl/assets/img/background/1.jpg — 200 — 969.0 KiB — 53 ms — h2https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2fonts.gstatic.com/s/materialicons/v... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2 — 200 — 125.4 KiB — 114 ms — h3https://fonts.gstatic.com/s/syne/v24/8vIS7w4qzmVxsWxjBZRjr0FKM_3mvg6jTY8.woff2fonts.gstatic.com/s/syne/v24/8vIS7w... https://fonts.gstatic.com/s/syne/v24/8vIS7w4qzmVxsWxjBZRjr0FKM_3mvg6jTY8.woff2 — 200 — 14.0 KiB — 54 ms — h3https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFQ.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFQ.woff2 — 200 — 7.7 KiB — 53 ms — h3https://online.secure-logistics.nl/nl/assets/img/favicon/favicon.ico/nl/assets/img/favicon/favicon.ico https://online.secure-logistics.nl/nl/assets/img/favicon/favicon.ico — 200 — 14.8 KiB — 33 ms — h2https://online.secure-logistics.nl/nl/assets/img/favicon/apple-touch-icon.png/nl/assets/img/favicon/apple-touch-... https://online.secure-logistics.nl/nl/assets/img/favicon/apple-touch-icon.png — 200 — 4.0 KiB — 33 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
27% of JavaScript execution is third-party
First-party Third-party 567ms · 0KB · €6/mo
Unattributable
Other
Costly
Execution 567ms
Transfer 0 KB
Monthly Cost €6/mo

These scripts may cost more than they're worth

  • Unattributable adds 567ms and costs ~€6/month

Unattributable takes 567ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-11 — 2026-05-08)

LCP (p75)

1485 ms

90% good

INP (p75)

104 ms

92% good

CLS (p75)

0.060

78% good

FCP (p75)

743 ms

TTFB (p75)

351 ms

This origin passes Core Web Vitals assessment
Image Optimization
3 images, 57 KB total, 39 KB wasted
INFO

Image Optimization Audit

Total Images

3

Total Size

57 KB

Oversized

2

Wasted

39 KB

3 missing alt text 3 missing dimensions 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback