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.
B
Image Optimization
29 images, 0 KB saveable
REVIEW
29 images, 0 KB saveable
Info::
✓
All images are well-optimized
29images4.3 MB
0oversized-0 KB
28legacy format
0missing dimensionsCLS risk
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
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main 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
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
i
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::
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
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
!
2 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
Warning::
!
Total JS execution time is 5.1 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
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
9 fonts (252 KB)
PASS
9 fonts (252 KB)
Info::
i
9 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
9
252 KB total
Render-blocking
0
of 9
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
newspaper.woffwoffswap
Size34 KB
Load time44 ms
Start961 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
newspaper-icons.woffwoffswap
Size6 KB
Load time41 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size37 KB
Load time103 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
QGYsz_wNahGAdqQ43Rh_fKD...woff2swap
Size49 KB
Load time109 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time106 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
EJRSQgYoZZY2vCFuvAnt66q...woff2swap
Size13 KB
Load time82 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
EJRVQgYoZZY2vCFuvAFWzr-...woff2swap
Size13 KB
Load time84 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time47 ms
Start2.2 s
RiskFOUT — text flashes from fallback to web font
KFOMCnqEu92Fr1ME7kSn66a...woff2swap
Size15 KB
Load time46 ms
Start2.2 s
RiskFOUT — 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 ~12 KB and ~24 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
6 hints, 0 missing preconnects
PASS
6 hints, 0 missing preconnects
Info::
✓
Page uses 6 resource hint(s)
Current Resource Hints
preconnect
4
preload—
dns-prefetch
2
prefetch—
6 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
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
✓
`Vary` header declared: accept,content-type
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
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+
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+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
✓
No CSS performance depth issues detected
Network Waterfall
97 requests over 2587ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
88%of JavaScript execution is third-party
First-party Third-party4509ms · 3177KB · €49/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.latinanews.eu
www.latinanews.eu
Other
1757ms
524 KB
—
€19/mo
Costly
www.latinanews.eu
www.latinanews.eu
Other
741ms
566 KB
77%
€8/mo
Costly
fundingchoicesmessages.google.com
fundingchoicesmessages.google.com
Other
396ms
69 KB
—
€4/mo
Costly
www.latinanews.eu
www.latinanews.eu
Other
381ms
86 KB
42%
€4/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
335ms
197 KB
72%
€4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
257ms
158 KB
43%
€3/mo
Costly
fundingchoicesmessages.google.com
fundingchoicesmessages.google.com
Other
251ms
71 KB
52%
€3/mo
Costly
pagead2.googlesyndication.com
pagead2.googlesyndication.com
Other
125ms
166 KB
85%
€1/mo
Optional
pagead2.googlesyndication.com
pagead2.googlesyndication.com
Other
103ms
56 KB
59%
€1/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
95ms
36 KB
—
€1/mo
Optional
www.latinanews.eu
www.latinanews.eu
Other
68ms
1250 KB
—
€1/mo
Optional
www.latinanews.eu
Other
Costly
Execution1757ms
Transfer524 KB
Monthly Cost€19/mo
www.latinanews.eu
Other
Costly
Execution741ms
Transfer566 KB
Unused77%
Monthly Cost€8/mo
fundingchoicesmessages.google.com
Other
Costly
Execution396ms
Transfer69 KB
Monthly Cost€4/mo
www.latinanews.eu
Other
Costly
Execution381ms
Transfer86 KB
Unused42%
Monthly Cost€4/mo
securepubads.g.doubleclick.net
Other
Costly
Execution335ms
Transfer197 KB
Unused72%
Monthly Cost€4/mo
Google Tag Manager
Tag Manager
Costly
Execution257ms
Transfer158 KB
Unused43%
Monthly Cost€3/mo
fundingchoicesmessages.google.com
Other
Costly
Execution251ms
Transfer71 KB
Unused52%
Monthly Cost€3/mo
pagead2.googlesyndication.com
Other
Optional
Execution125ms
Transfer166 KB
Unused85%
Monthly Cost€1/mo
pagead2.googlesyndication.com
Other
Optional
Execution103ms
Transfer56 KB
Unused59%
Monthly Cost€1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution95ms
Transfer36 KB
Monthly Cost€1/mo
www.latinanews.eu
Other
Optional
Execution68ms
Transfer1250 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.latinanews.eu adds 1757ms and costs ~€19/month
www.latinanews.eu adds 741ms and costs ~€8/month
fundingchoicesmessages.google.com adds 396ms and costs ~€4/month
www.latinanews.eu adds 381ms and costs ~€4/month
securepubads.g.doubleclick.net adds 335ms and costs ~€4/month
Google Tag Manager adds 257ms and costs ~€3/month
fundingchoicesmessages.google.com adds 251ms and costs ~€3/month
88% 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.
Source: web.dev
www.latinanews.eu takes 1757ms 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
www.latinanews.eu takes 741ms 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
77% of www.latinanews.eu's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
fundingchoicesmessages.google.com takes 396ms 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
www.latinanews.eu takes 381ms 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
securepubads.g.doubleclick.net takes 335ms 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
72% of securepubads.g.doubleclick.net's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 257ms 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
fundingchoicesmessages.google.com takes 251ms 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
52% of fundingchoicesmessages.google.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
85% of pagead2.googlesyndication.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
59% of pagead2.googlesyndication.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.