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.
C
Image Optimization
Action
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
!
https://platform.docplanner.com/img/general/doctor... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8images19 KB
0oversized-0 KB
5legacy format
2missing 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
Performance issues directly impact user engagement and conversion rates.
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::
!
13 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 11.0 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
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
✓
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
10 hints, 0 missing preconnects
PASS
10 hints, 0 missing preconnects
Info::
✓
Page uses 10 resource hint(s)
Current Resource Hints
preconnect
6
preload
4
dns-prefetch—
prefetch—
10 resource hints configured
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
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+
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::
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.
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Network Waterfall
98 requests over 4844ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
91%of JavaScript execution is third-party
First-party Third-party10067ms · 1994KB · €161/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Google Tag Manager
www.googletagmanager.com
Tag Manager
2654ms
201 KB
29%
€42/mo
Costly
www.miodottore.it
www.miodottore.it
Other
1350ms
218 KB
—
€22/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
712ms
8 KB
—
€11/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
692ms
278 KB
69%
€11/mo
Costly
dev.visualwebsiteoptimizer.com
dev.visualwebsiteoptimizer.com
Other
658ms
100 KB
64%
€11/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
632ms
182 KB
33%
€10/mo
Costly
cookie-cdn.cookiepro.com
cookie-cdn.cookiepro.com
Other
459ms
135 KB
55%
€7/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
391ms
143 KB
46%
€6/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
371ms
2 KB
—
€6/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
331ms
151 KB
43%
€5/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
288ms
4 KB
—
€5/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
281ms
17 KB
—
€4/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
258ms
340 KB
97%
€4/mo
Costly
platform.docplanner.com
platform.docplanner.com
Other
188ms
25 KB
—
€3/mo
Optional
platform.docplanner.com
platform.docplanner.com
Other
147ms
1 KB
—
€2/mo
Optional
platform.docplanner.com
platform.docplanner.com
Other
140ms
50 KB
58%
€2/mo
Optional
dev.visualwebsiteoptimizer.com
dev.visualwebsiteoptimizer.com
Other
121ms
17 KB
—
€2/mo
Optional
accounts.google.com
accounts.google.com
Other
115ms
97 KB
74%
€2/mo
Optional
platform.docplanner.com
platform.docplanner.com
Other
87ms
2 KB
—
€1/mo
Optional
platform.docplanner.com
platform.docplanner.com
Other
82ms
1 KB
—
€1/mo
Optional
dev.visualwebsiteoptimizer.com
dev.visualwebsiteoptimizer.com
Other
58ms
10 KB
—
€1/mo
Optional
cookie-cdn.cookiepro.com
cookie-cdn.cookiepro.com
Other
51ms
10 KB
—
€1/mo
Optional
Google Tag Manager
Tag Manager
Costly
Execution2654ms
Transfer201 KB
Unused29%
Monthly Cost€42/mo
www.miodottore.it
Other
Costly
Execution1350ms
Transfer218 KB
Monthly Cost€22/mo
platform.docplanner.com
Other
Costly
Execution712ms
Transfer8 KB
Monthly Cost€11/mo
platform.docplanner.com
Other
Costly
Execution692ms
Transfer278 KB
Unused69%
Monthly Cost€11/mo
dev.visualwebsiteoptimizer.com
Other
Costly
Execution658ms
Transfer100 KB
Unused64%
Monthly Cost€11/mo
Google Tag Manager
Tag Manager
Costly
Execution632ms
Transfer182 KB
Unused33%
Monthly Cost€10/mo
cookie-cdn.cookiepro.com
Other
Costly
Execution459ms
Transfer135 KB
Unused55%
Monthly Cost€7/mo
Google Tag Manager
Tag Manager
Costly
Execution391ms
Transfer143 KB
Unused46%
Monthly Cost€6/mo
platform.docplanner.com
Other
Costly
Execution371ms
Transfer2 KB
Monthly Cost€6/mo
Google Tag Manager
Tag Manager
Costly
Execution331ms
Transfer151 KB
Unused43%
Monthly Cost€5/mo
platform.docplanner.com
Other
Costly
Execution288ms
Transfer4 KB
Monthly Cost€5/mo
platform.docplanner.com
Other
Costly
Execution281ms
Transfer17 KB
Monthly Cost€4/mo
platform.docplanner.com
Other
Costly
Execution258ms
Transfer340 KB
Unused97%
Monthly Cost€4/mo
platform.docplanner.com
Other
Optional
Execution188ms
Transfer25 KB
Monthly Cost€3/mo
platform.docplanner.com
Other
Optional
Execution147ms
Transfer1 KB
Monthly Cost€2/mo
platform.docplanner.com
Other
Optional
Execution140ms
Transfer50 KB
Unused58%
Monthly Cost€2/mo
dev.visualwebsiteoptimizer.com
Other
Optional
Execution121ms
Transfer17 KB
Monthly Cost€2/mo
accounts.google.com
Other
Optional
Execution115ms
Transfer97 KB
Unused74%
Monthly Cost€2/mo
platform.docplanner.com
Other
Optional
Execution87ms
Transfer2 KB
Monthly Cost€1/mo
platform.docplanner.com
Other
Optional
Execution82ms
Transfer1 KB
Monthly Cost€1/mo
dev.visualwebsiteoptimizer.com
Other
Optional
Execution58ms
Transfer10 KB
Monthly Cost€1/mo
cookie-cdn.cookiepro.com
Other
Optional
Execution51ms
Transfer10 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
Google Tag Manager adds 2654ms and costs ~€42/month
www.miodottore.it adds 1350ms and costs ~€22/month
platform.docplanner.com adds 712ms and costs ~€11/month
platform.docplanner.com adds 692ms and costs ~€11/month
dev.visualwebsiteoptimizer.com adds 658ms and costs ~€11/month
Google Tag Manager adds 632ms and costs ~€10/month
cookie-cdn.cookiepro.com adds 459ms and costs ~€7/month
Google Tag Manager adds 391ms and costs ~€6/month
platform.docplanner.com adds 371ms and costs ~€6/month
Google Tag Manager adds 331ms and costs ~€5/month
platform.docplanner.com adds 288ms and costs ~€5/month
platform.docplanner.com adds 281ms and costs ~€4/month
platform.docplanner.com adds 258ms and costs ~€4/month
91% 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
Google Tag Manager takes 2654ms 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.miodottore.it takes 1350ms 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
platform.docplanner.com takes 712ms 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
platform.docplanner.com takes 692ms 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
69% of platform.docplanner.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
dev.visualwebsiteoptimizer.com takes 658ms 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
64% of dev.visualwebsiteoptimizer.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
Google Tag Manager takes 632ms 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
cookie-cdn.cookiepro.com takes 459ms 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
55% of cookie-cdn.cookiepro.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
Google Tag Manager takes 391ms 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
platform.docplanner.com takes 371ms 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
Google Tag Manager takes 331ms 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
platform.docplanner.com takes 288ms 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
platform.docplanner.com takes 281ms 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
platform.docplanner.com takes 258ms 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
97% of platform.docplanner.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
58% of platform.docplanner.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
74% of accounts.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.