https://ldns.com
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
93
GRADE
A
FIX
1
REVIEW
4
PASS
18
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
85
85
96
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.90 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.03 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
211 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.
2.90 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.
4.08 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
2618 PASS 4 REVIEW 1 FIX
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BThird-Party Impact55% third-party, 0 ms blockingREVIEW
Third-Party Impact
55% third-party, 0 ms blocking
55% third-party, 0 ms blocking
Warning::
Third-party code accounts for 55% of page weight (165.8 KiB of 304.2 KiB)
Info::
Third-party blocking time is low (0 ms)
45%
55%
First-party Third-party
CJS Execution CostAction1362ms total JS executionREVIEW
JS Execution Cost
Action1362ms total JS execution
1362ms total JS execution
Warning::
Unattributable: 443ms CPU time
Warning::
https://ldns.com/: 371ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-45PE...: 323ms CPU time
Info::
https://ldns.com/_app/immutable/chunks/b9WmUrRO.js: 162ms CPU time
Info::
https://static.cloudflareinsights.com/beacon.min.j...: 62ms CPU time
Info::
Third-party scripts: 385ms (28% of total)
Main Thread Breakdown
Script Evaluation 46% Other 26% Style & Layout 17% Script Parsing & Compilation 4% Parse HTML & CSS 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 443ms | 201ms | 0ms | 1st |
| https://ldns.com/ | 371ms | 19ms | 4ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-45PEPZ8BDR | 323ms | 271ms | 49ms | 3rd |
| https://ldns.com/_app/immutable/chunks/b9WmUrRO.js | 162ms | 141ms | 0ms | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447 | 62ms | 40ms | 4ms | 3rd |
BJS Bundles32 scripts, 67 KB unusedREVIEW
JS Bundles
32 scripts, 67 KB unused
32 scripts, 67 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-45PE...: 67 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 67 KB
67 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-45PEPZ8BDR | 154 KB | 67 KB (44%) | ✓ | 3rd |
| https://ldns.com/_app/immutable/chunks/uKupv5Cb.js | 7 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/Dff3VRsn.js | 2 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/BlKmuS6K.js | 1 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/BUApaBEI.js | 1 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/DS_CSont.js | 1 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/entry/app.JbXdDuaA.js | 5 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/PPVm8Dsz.js | 1 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/BVNqEeI9.js | 45 KB | — | ✓ | 1st |
| https://ldns.com/_app/immutable/chunks/BR__IKZY.js | 5 KB | — | ✓ | 1st |
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
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
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.
A+Page Weight Budget304 KB transferred, 40 requestsPASS
Page Weight Budget
304 KB transferred, 40 requests
304 KB transferred, 40 requests
Info::
Page weighs 854 KB (304 KB transferred)
Info::
40 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
304 KB transferred
40 requests
0.06 g CO2 per page load
JavaScript 279.5 KiB 92%
CSS 12.3 KiB 4%
HTML 9.3 KiB 3%
Other 1.5 KiB 1%
Images 648 B 0%
Other 544 B 0%
Other 447 B 0%
0 2.4 MB 4.9 MB
Under budget
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.
A+Image Optimization1 images, 0 KB saveablePASS
Image Optimization
1 images, 0 KB saveable
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 1 KB
0 oversized -0 KB
1 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+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+Compression AlgorithmMain response uses brotliPASS
Compression Algorithm
Main response uses brotli
Main 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+Server-Timing Observability3 Server-Timing entries advertisedPASS
Server-Timing Observability
3 Server-Timing entries advertised
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
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::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
APage Weight Inventory40 resources · 304 KB · 67 KB savings availablePASS
Page Weight Inventory
40 resources · 304 KB · 67 KB savings available
40 resources · 304 KB · 67 KB savings available
Info::
Within 1MB page-weight target
Got: 304 KB
Info::
~67 KB of savings available
Warning::
3 third-party resources (55% of weight)
40 resources · 304.2 KiB · 3 third-party Within 1MB page-weight target
JavaScript 92% · 279.5 KiB
CSS 4% · 12.3 KiB
Document 3% · 9.3 KiB
Image 1% · 1.6 KiB
Other 0% · 1.5 KiB
~66.8 KiB of savings available
Remove unused JavaScript: 66.8 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 40 resources | 304.2 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
Network Waterfall40 requests over 500msINFO
Network Waterfall
40 requests over 500ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
28% of JavaScript execution is third-party
First-party Third-party 385ms · 165KB · €4/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 323ms | 154 KB | 44% | €4/mo | Costly |
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 62ms | 11 KB | — | €1/mo | Optional |
Google Tag Manager
Tag Manager
Execution 323ms
Transfer 154 KB
Unused 44%
Monthly Cost €4/mo
static.cloudflareinsights.com
Other
Execution 62ms
Transfer 11 KB
Monthly Cost €1/mo
These scripts may cost more than they're worth
- Google Tag Manager adds 323ms and costs ~€4/month
Google Tag Manager takes 323ms 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
Image Optimization3 images, 0 KB total, 0 KB wastedINFO
Image Optimization
3 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
3
Total Size
0 KB
3 missing dimensions 2 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.