Skip to content
https://www.paloaltonetworks.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
5
PASS
5
INFO
2

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

Mobile Desktop
90
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
99
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

870 ms

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

1.86 s

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

5 ms

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

0.004

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

1.41 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.

2.19 s

Page Load Progression

743 ms
1.5 s
2.2 s
3.0 s
3.7 s
4.5 s
5.2 s
5.9 s
Checks
14
5 PASS 5 REVIEW 2 FIX
F
Page Weight Budget
Action
7.3 MB transferred, 107 requests
FIX
7.3 MB transferred, 107 requests
Critical::
Page weighs 10.0 MB (7.3 MB transferred)
Warning::
107 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.5 g CO2 per page load
7.3 MB / 2.4 MB budget
7.3 MB transferred
107 requests
1.5 g CO2 per page load
Other 3.2 MiB 44%
Other 2.9 MiB 40%
JavaScript 497.1 KiB 7%
Images 461.5 KiB 6%
HTML 116.8 KiB 2%
Fonts 92.3 KiB 1%
Other 40.3 KiB 1%
CSS 37.0 KiB 0%
Other 986 B 0%
Other 464 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: max-age=0, no-cache, no-store
Info::
Last-Modified header present
Cache-Control

max-age=0, no-cache, no-store

DirectiveValueMeaning
max-age0Cache for 0 seconds
no-cache—Cache but always revalidate first
no-store—Never cache this response
B
Third-Party Impact
46% third-party, 0 ms blocking
REVIEW
46% third-party, 0 ms blocking
Info::
Third-party code accounts for 46% of page weight (3.4 MiB of 7.3 MiB)
Info::
Third-party blocking time is low (0 ms)
54%
46%
First-party Third-party
B
Image Optimization
52 images, 0 KB saveable
REVIEW
52 images, 0 KB saveable
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
52 images 462 KB
0 oversized -0 KB
38 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

C
JS Execution Cost
Action
1340ms total JS execution
REVIEW
1340ms total JS execution
Warning::
Unattributable: 282ms CPU time
Warning::
https://www.paloaltonetworks.com/: 279ms CPU time
Warning::
https://www.paloaltonetworks.com/etc/clientlibs/cl...: 279ms CPU time
Info::
https://s.go-mpulse.net/boomerang/6KU9W-5DTLL-AXSJ...: 207ms CPU time
Info::
https://www.paloaltonetworks.com/etc/clientlibs/pa...: 138ms CPU time
Info::
Third-party scripts: 559ms (42% of total)

Main Thread Breakdown

Script Evaluation 34% Other 30% Style & Layout 23% Rendering 5% Script Parsing & Compilation 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
Unattributable282ms4ms0ms3rd
https://www.paloaltonetworks.com/279ms33ms12ms1st
https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/video-js/video-js-bc.js279ms192ms19ms1st
https://s.go-mpulse.net/boomerang/6KU9W-5DTLL-AXSJY-VNWUZ-RTS7Q207ms47ms4ms3rd
https://www.paloaltonetworks.com/etc/clientlibs/pan-mktvisitor-redesign.min.js138ms70ms2ms1st
https://www.paloaltonetworks.com/etc/clientlibs/panClean/components/library/bundle.ddynamicAllComponents.poperlityybscolpancsdgldrbsdrobstabdaibcdaihedancnddcbgddctcddehtddepgddlkhddybadfsvcdhhttdhomcdhppbdhpptdhppvdhpscdhpstdhptcdhsacdmftcdddmn.min.0060c30a09178f03e9ab3c2e6270fde6.js84ms50ms4ms1st
https://assets.adobedtm.com/9273d4aedcd2/0d76ae0322d7/launch-425c423d843b.min.js69ms50ms12ms3rd
C
JS Bundles
Action
17 scripts, 187 KB unused
REVIEW
17 scripts, 187 KB unused
Warning::
https://www.paloaltonetworks.com/etc/clientlibs/cl...: 93 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.adobedtm.com/9273d4aedcd2/0d76ae032...: 52 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.paloaltonetworks.com/etc/clientlibs/pa...: 22 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://s.go-mpulse.net/boomerang/6KU9W-5DTLL-AXSJ...: 20 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 187 KB
187 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/video-js/video-js-bc.js223 KB93 KB (42%)✓1st
https://assets.adobedtm.com/9273d4aedcd2/0d76ae0322d7/launch-425c423d843b.min.js136 KB52 KB (38%)✓3rd
https://www.paloaltonetworks.com/etc/clientlibs/panClean/components/library/bundle.ddynamicAllComponents.poperlityybscolpancsdgldrbsdrobstabdaibcdaihedancnddcbgddctcddehtddepgddlkhddybadfsvcdhhttdhomcdhppbdhpptdhppvdhpscdhpstdhptcdhsacdmftcdddmn.min.0060c30a09178f03e9ab3c2e6270fde6.js36 KB22 KB (63%)✓1st
https://s.go-mpulse.net/boomerang/6KU9W-5DTLL-AXSJY-VNWUZ-RTS7Q58 KB20 KB (35%)✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js0 KB—✓3rd
https://www.paloaltonetworks.com/apps/pan/public/userHeaderModel1 KB—✓1st
https://assets.adobedtm.com/extensions/EP31dbb9c60e404ba1aa6e746d49be6f29/AppMeasurement.min.js13 KB—✓3rd
https://assets.adobedtm.com/extensions/EP31dbb9c60e404ba1aa6e746d49be6f29/AppMeasurement_Module_ActivityMap.min.js2 KB—✓3rd
https://www.paloaltonetworks.com/etc/clientlibs/pan/js/lazyload.min.js6 KB—✓1st
https://sstats.paloaltonetworks.com/id?d_visid_ver=5.5.0&d_fieldgroup=MC&mcorgid=9A531C8B532965080A490D4D%40AdobeOrg&ts=17755946260231 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

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
5 fonts (92 KB)
PASS
5 fonts (92 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

92 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s FCP 870 ms LCP 1.9 shttps://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/ffceleste/CelestePro-Book_optimized.woff2CelestePro-Book_optimiz... https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/ffceleste/CelestePro-Book_optimized.woff2 — 19.9 KiB — 0 ms — font-display: swaphttps://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-Regular_optimized.woff2TTHoves-Regular_optimiz... https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-Regular_optimized.woff2 — 17.6 KiB — 0 ms — font-display: swaphttps://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-DemiBold_optimized.woff2TTHoves-DemiBold_optimi... https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-DemiBold_optimized.woff2 — 18.0 KiB — 0 ms — font-display: swaphttps://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-Medium_optimized.woff2TTHoves-Medium_optimize... https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-Medium_optimized.woff2 — 18.3 KiB — 0 ms — font-display: swaphttps://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-Bold_optimized.woff2TTHoves-Bold_optimized.... https://www.paloaltonetworks.com/etc/clientlibs/clean/dependencies/fonts/tthoves/TTHoves-Bold_optimized.woff2 — 18.4 KiB — 0 ms — font-display: swap
CelestePro-Book_optimiz... woff2 swap
Size 20 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
TTHoves-Regular_optimiz... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
TTHoves-DemiBold_optimi... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
TTHoves-Medium_optimize... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
TTHoves-Bold_optimized.... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 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)
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
107 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
42% of JavaScript execution is third-party
First-party Third-party 559ms · 194KB · $7/mo
Unattributable
Other
Costly
Execution 282ms
Transfer 0 KB
Monthly Cost $4/mo
s.go-mpulse.net
Other
Costly
Execution 207ms
Transfer 58 KB
Unused 35%
Monthly Cost $3/mo
assets.adobedtm.com
Other
Optional
Execution 69ms
Transfer 136 KB
Unused 38%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 282ms and costs ~$4/month
  • s.go-mpulse.net adds 207ms and costs ~$3/month

42% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 282ms 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

s.go-mpulse.net takes 207ms 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

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback