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https://monash.edu

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
73
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
40
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.

282 ms

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

823 ms

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

724 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.

498 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.94 s

Page Load Progression

653 ms
1.3 s
2.0 s
2.6 s
3.3 s
3.9 s
4.6 s
5.2 s
Checks
15
9 PASS 2 REVIEW 2 FIX
D
Third-Party Impact
Action
81% third-party, 0 ms blocking
FIX
81% third-party, 0 ms blocking
Warning::
Third-party code accounts for 81% of page weight (422.5 KiB of 524.8 KiB)
Info::
Third-party blocking time is low (0 ms)
19%
81%
First-party Third-party
F
JS Execution Cost
Action
4759ms total JS execution
FIX
4759ms total JS execution
Warning::
https://monash.edu/cdn-cgi/challenge-platform/h/b/...: 4547ms CPU time
Info::
Unattributable: 213ms CPU time
Info::
Third-party scripts: 213ms (4% of total)

Main Thread Breakdown

Script Evaluation 94% Other 4%
ScriptTotalScriptingParse/CompileParty
https://monash.edu/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f00019a2d747a4b4547ms4472ms7ms1st
Unattributable213ms52ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
private, max-age=0
REVIEW
private, max-age=0
Info::
Cache-Control header is set
Got: private, max-age=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private, max-age=0

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
max-age0Cache for 0 seconds
A+
Page Weight Budget
525 KB transferred, 22 requests
PASS
525 KB transferred, 22 requests
Info::
Page weighs 924 KB (525 KB transferred)
Info::
22 HTTP requests
Info::
Estimated 0.11 g CO2 per page load
525 KB / 2.4 MB budget
525 KB transferred
22 requests
0.11 g CO2 per page load
Other 317.3 KiB 60%
HTML 100.1 KiB 19%
JavaScript 86.4 KiB 16%
Images 12.9 KiB 2%
Other 6.4 KiB 1%
Other 1.7 KiB 0%
0 2.4 MB 4.9 MB
Under budget
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
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 13 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
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+
JS Bundles
11 scripts, 0 KB unused
PASS
11 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://monash.edu/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f00019a2d747a4b69 KB—✓1st
blob:https://monash.edu/58422ca7-f727-4b72-a42e-bec2a6feec240 KB—✓3rd
https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js?onload=cFRiY3&render=explicit17 KB—✓3rd
blob:https://monash.edu/21a75695-7b95-4425-9b4f-7ab79c5d3f4f-0 KB—✓3rd
blob:https://challenges.cloudflare.com/77ccc067-8668-45e2-b3ea-5eac3263b6940 KB—✓3rd
blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95-0 KB—✓3rd
blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95-0 KB—✓3rd
blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95-0 KB—✓3rd
blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95-0 KB—✓3rd
blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95-0 KB—✓3rd
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
A
Page Weight Inventory
22 resources · 525 KB · 0 KB savings available
PASS
22 resources · 525 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 525 KB
Warning::
16 third-party resources (81% of weight)
Info::
1 resources over 200KB
22 resources · 524.8 KiB · 16 third-party Within 1MB page-weight target
Other 61% · 319.0 KiB
Document 20% · 106.5 KiB
JavaScript 16% · 86.4 KiB
Image 2% · 12.9 KiB
Network Waterfall
22 requests over 4814ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 282 ms LCP 823 mshttps://monash.edu// https://monash.edu/ — 307 — 60 B — 41 ms — http/1.1https://monash.edu// https://monash.edu/ — 403 — 5.4 KiB — 21 ms — h2https://monash.edu/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f00019a2d747a4b/cdn-cgi/challenge-platform/h/b/orc... https://monash.edu/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f00019a2d747a4b — 200 — 69.0 KiB — 29 ms — h2blob:https://monash.edu/58422ca7-f727-4b72-a42e-bec2a6feec24monash.edu/58422ca7-f727-4b72-a42e-... blob:https://monash.edu/58422ca7-f727-4b72-a42e-bec2a6feec24 — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js?onload=cFRiY3&render=explicitchallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js?onload=cFRiY3&render=explicit — 200 — 17.3 KiB — 23 ms — h3https://monash.edu/favicon.ico/favicon.ico https://monash.edu/favicon.ico — 403 — 7.9 KiB — 21 ms — h2https://monash.edu/favicon.ico/favicon.ico https://monash.edu/favicon.ico — 403 — 6.4 KiB — 18 ms — h2https://monash.edu/cdn-cgi/challenge-platform/h/b/flow/ov1/3594160270:1776809553:LF-d7ov4rwlPFiaU1cNWhn-u54a_SCI9x1hbvxf-iHs/9f00019a2d747a4b/aFMgPE87fK00FRU3eqV1wFVfF7NUlS86f3CEmjXGGFg-1776812440-1.2.1.1-lnHaB8Hu0kItl8ScEU4_1hd0dgGR92sqS_QZLxzmwedmw_J17KokE6_XyUHbusfJ/cdn-cgi/challenge-platform/h/b/flo... https://monash.edu/cdn-cgi/challenge-platform/h/b/flow/ov1/3594160270:1776809553:LF-d7ov4rwlPFiaU1cNWhn-u54a_SCI9x1hbvxf-iHs/9f00019a2d747a4b/aFMgPE87fK00FRU3eqV1wFVfF7NUlS86f3CEmjXGGFg-1776812440-1.2.1.1-lnHaB8Hu0kItl8ScEU4_1hd0dgGR92sqS_QZLxzmwedmw_J17KokE6_XyUHbusfJ — 200 — 13.6 KiB — 32 ms — h2blob:https://monash.edu/21a75695-7b95-4425-9b4f-7ab79c5d3f4fmonash.edu/21a75695-7b95-4425-9b4f-... blob:https://monash.edu/21a75695-7b95-4425-9b4f-7ab79c5d3f4f — 200 — -1 B — 97 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/turnstile/f/ov2/av0/rch/d6fsu/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=autochallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/turnstile/f/ov2/av0/rch/d6fsu/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=auto — 200 — 94.8 KiB — 35 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/cmg/1challenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/cmg/1 — 200 — 208 B — 7 ms — h3blob:https://challenges.cloudflare.com/77ccc067-8668-45e2-b3ea-5eac3263b694challenges.cloudflare.com/77ccc067-... blob:https://challenges.cloudflare.com/77ccc067-8668-45e2-b3ea-5eac3263b694 — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/1072627103:1776809555:BmIdi2STVtUVd1U8czSCHAzL_O0c577w2Xdp6OQL8uQ/9f00019d1ebe6572/gkIDQPhyfj7CvZjsC4TJvPG8xpRDS1BZ0YjKoJsy2Dc-1776812441-1.2.1.1-P6lSNv5ctLeCOx0JUnC838W3wThitUparkjA8DVReww6bQmkfNrKYZgz7LF9awUXchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/1072627103:1776809555:BmIdi2STVtUVd1U8czSCHAzL_O0c577w2Xdp6OQL8uQ/9f00019d1ebe6572/gkIDQPhyfj7CvZjsC4TJvPG8xpRDS1BZ0YjKoJsy2Dc-1776812441-1.2.1.1-P6lSNv5ctLeCOx0JUnC838W3wThitUparkjA8DVReww6bQmkfNrKYZgz7LF9awUX — 200 — 281.0 KiB — 116 ms — h3blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95challenges.cloudflare.com/63bc86c7-... blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95 — 200 — -1 B — 135 ms — blobblob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95challenges.cloudflare.com/63bc86c7-... blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95 — 200 — -1 B — 17 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/d/9f00019d1ebe6572/1776812441575/cHp4d5wqDDCW68tchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/d/9f00019d1ebe6572/1776812441575/cHp4d5wqDDCW68t — 200 — 4.8 KiB — 12 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/pat/9f00019d1ebe6572/1776812441575/d99596ea5b61bf3904cea302860aba6163998c1e56ad23678729c6c8b4fc82c6/nXnwf_iCG6kKgpochallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/pat/9f00019d1ebe6572/1776812441575/d99596ea5b61bf3904cea302860aba6163998c1e56ad23678729c6c8b4fc82c6/nXnwf_iCG6kKgpo — 401 — 1.7 KiB — 6 ms — h3blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95challenges.cloudflare.com/63bc86c7-... blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95 — 200 — -1 B — 31 ms — blobblob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95challenges.cloudflare.com/63bc86c7-... blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95 — 200 — -1 B — 29 ms — blobblob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95challenges.cloudflare.com/63bc86c7-... blob:https://challenges.cloudflare.com/63bc86c7-929e-4496-a08a-71ffa48e8b95 — 200 — -1 B — 36 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/1072627103:1776809555:BmIdi2STVtUVd1U8czSCHAzL_O0c577w2Xdp6OQL8uQ/9f00019d1ebe6572/gkIDQPhyfj7CvZjsC4TJvPG8xpRDS1BZ0YjKoJsy2Dc-1776812441-1.2.1.1-P6lSNv5ctLeCOx0JUnC838W3wThitUparkjA8DVReww6bQmkfNrKYZgz7LF9awUXchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/1072627103:1776809555:BmIdi2STVtUVd1U8czSCHAzL_O0c577w2Xdp6OQL8uQ/9f00019d1ebe6572/gkIDQPhyfj7CvZjsC4TJvPG8xpRDS1BZ0YjKoJsy2Dc-1776812441-1.2.1.1-P6lSNv5ctLeCOx0JUnC838W3wThitUparkjA8DVReww6bQmkfNrKYZgz7LF9awUX — 200 — 22.7 KiB — 34 ms — h3blob:https://challenges.cloudflare.com/ac34d85c-b02e-4eba-8595-86fe39f54f68challenges.cloudflare.com/ac34d85c-... blob:https://challenges.cloudflare.com/ac34d85c-b02e-4eba-8595-86fe39f54f68 — 200 — -1 B — 38 ms — blob
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
4% of JavaScript execution is third-party
First-party Third-party 213ms · 0KB · A$4/mo
Unattributable
Other
Costly
Execution 213ms
Transfer 0 KB
Monthly Cost A$4/mo

These scripts may cost more than they're worth

  • Unattributable adds 213ms and costs ~A$4/month

Unattributable takes 213ms 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.

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