https://truecloud.nl/wp-content/uploads/go-x/u/082... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/bf8... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/12c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/a20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/65a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/de3... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/cc4... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/365... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://truecloud.nl/wp-content/uploads/go-x/u/baa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11images4.2 MB
0oversized-0 KB
11legacy format
9missing dimensionsCLS 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
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
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
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
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::
i
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
Document Compression
Action
Document response served uncompressed
REVIEW
Document response served uncompressed
Info::
i
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
Asset Compression
1 of 1 asset host serve text uncompressed
REVIEW
1 of 1 asset host serve text uncompressed
Warning::
!
truecloud.nl serves text assets uncompressed (assets: 20)
The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.
Got: truecloud.nl (text/css)
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
i
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.
B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
✓
Cache-Control header is set
Got: no-cache
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
no-cache
Directive
Value
Meaning
no-cache
—
Cache but always revalidate first
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+
JS Execution Cost
266ms total JS execution
PASS
266ms total JS execution
Info::
i
https://truecloud.nl/: 194ms CPU time
Info::
i
Unattributable: 72ms CPU time
Warning::
!
Third-party scripts: 194ms (73% of total)
Main Thread Breakdown
Other 63% Style & Layout 19% Parse HTML & CSS 6% Script Evaluation 6% Rendering 4%
Script
Total
Scripting
Parse/Compile
Party
https://truecloud.nl/
194ms
3ms
2ms
3rd
Unattributable
72ms
1ms
0ms
1st
A+
Font Loading
5 fonts (110 KB)
PASS
5 fonts (110 KB)
Info::
i
5 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
5
110 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
OpenSans-latin_latin-ex...woffswap
Size24 KB
Load time48 ms
Start593 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Poppins-latin_latin-ext...woffswap
Size14 KB
Load time56 ms
Start593 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Poppins-latin_latin-ext...woffswap
Size14 KB
Load time85 ms
Start597 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
OpenSans-latin_latin-ex...woffswap
Size23 KB
Load time1.0 s
Start597 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Merriweather-latin_lati...woffswap
Size35 KB
Load time1.2 s
Start597 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
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 ~33 KB and ~66 ms
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
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
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+
Main HTML Cache-Control
Main HTML uses no-cache -- safe revalidate-on-request policy
PASS
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
✓
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
i
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.
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: IONOS SE
Network Waterfall
31 requests over 1920ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
73%of JavaScript execution is third-party
First-party Third-party194ms · 39KB · €2/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
truecloud.nl
truecloud.nl
Other
194ms
39 KB
—
€2/mo
Optional
truecloud.nl
Other
Optional
Execution194ms
Transfer39 KB
Monthly Cost€2/mo
73% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
Why this matters
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.