Skip to content
https://scitation.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
2
REVIEW
1
PASS
10
INFO
2

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

Mobile Desktop
99
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.
45
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.

502 ms

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

1000 ms

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

39 ms

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

0.001

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

538 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.

1000 ms

Page Load Progression

425 ms
849 ms
1.3 s
1.7 s
2.1 s
2.5 s
3.0 s
3.4 s
Checks
15
10 PASS 1 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (507.2 KiB of 507.6 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
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
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
508 KB transferred, 21 requests
PASS
508 KB transferred, 21 requests
Info::
Page weighs 909 KB (508 KB transferred)
Info::
21 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
508 KB / 2.4 MB budget
508 KB transferred
21 requests
0.10 g CO2 per page load
Other 308.0 KiB 61%
HTML 100.4 KiB 20%
JavaScript 89.4 KiB 18%
Images 7.5 KiB 1%
Other 1.7 KiB 0%
Other 667 B 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 7 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
436ms total JS execution
PASS
436ms total JS execution
Warning::
https://pubs.aip.org/cdn-cgi/challenge-platform/h/...: 385ms CPU time
Info::
Unattributable: 51ms CPU time
Warning::
Third-party scripts: 436ms (100% of total)

Main Thread Breakdown

Script Evaluation 80% Other 12% Garbage Collection 3%
ScriptTotalScriptingParse/CompileParty
https://pubs.aip.org/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f0763bbdc30c52b385ms369ms6ms3rd
Unattributable51ms2ms0ms3rd
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
8 scripts, 0 KB unused
PASS
8 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://pubs.aip.org/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f0763bbdc30c52b72 KB—✓3rd
blob:https://pubs.aip.org/6700afc1-ad13-4123-9f9d-36cec4e009d50 KB—✓3rd
https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js?onload=cFRiY3&render=explicit17 KB—✓3rd
blob:https://pubs.aip.org/c2a47ee1-bdfa-41af-b369-07a61a003e28-0 KB—✓3rd
blob:https://challenges.cloudflare.com/2eef2a23-8bfb-4a3c-8318-358522037a670 KB—✓3rd
blob:https://challenges.cloudflare.com/4b057560-02a7-423b-9880-d97faa3a262c-0 KB—✓3rd
blob:https://challenges.cloudflare.com/4b057560-02a7-423b-9880-d97faa3a262c-0 KB—✓3rd
blob:https://challenges.cloudflare.com/85ca225e-f745-4abd-b35e-a19cc20372a4-0 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
21 resources · 508 KB · 0 KB savings available
PASS
21 resources · 508 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 508 KB
Warning::
19 third-party resources (100% of weight)
Info::
1 resources over 200KB
21 resources · 507.6 KiB · 19 third-party Within 1MB page-weight target
Other 61% · 309.7 KiB
Document 20% · 101.0 KiB
JavaScript 18% · 89.4 KiB
Image 1% · 7.5 KiB
Network Waterfall
21 requests over 3135ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 502 ms LCP 1000 mshttps://scitation.org// https://scitation.org/ — 301 — 396 B — 52 ms — h2https://pubs.aip.org/pubs.aip.org/ https://pubs.aip.org/ — 307 — 63 B — 48 ms — http/1.1https://scitation.org// https://scitation.org/ — 301 — 0 B — 1 ms — h2https://pubs.aip.org/pubs.aip.org/ https://pubs.aip.org/ — 403 — 3.4 KiB — 7 ms — h2https://pubs.aip.org/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f0763bbdc30c52bpubs.aip.org/cdn-cgi/challenge-plat... https://pubs.aip.org/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9f0763bbdc30c52b — 200 — 72.1 KiB — 19 ms — h2blob:https://pubs.aip.org/6700afc1-ad13-4123-9f9d-36cec4e009d5pubs.aip.org/6700afc1-ad13-4123-9f9... blob:https://pubs.aip.org/6700afc1-ad13-4123-9f9d-36cec4e009d5 — -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 — 22 ms — h3https://pubs.aip.org/favicon.icopubs.aip.org/favicon.ico https://pubs.aip.org/favicon.ico — 403 — 5.2 KiB — 10 ms — h2https://pubs.aip.org/favicon.icopubs.aip.org/favicon.ico https://pubs.aip.org/favicon.ico — 404 — 208 B — 130 ms — h2https://pubs.aip.org/cdn-cgi/challenge-platform/h/b/flow/ov1/2574961096:1776888745:P4hk-3o_RhsRQQX88q8VNO601T4pZszmFrMeGiReD2Q/9f0763bbdc30c52b/bj8YJ5BPgSDeuqK19390EGijg0onBT88epVyJzfTJMs-1776889860-1.2.1.1-5ylhN.EujnjIoelZMzf1Eptd5DyIypteoiGuZBrZ.NTOoGc0GDiBoKrgHPGNicirpubs.aip.org/cdn-cgi/challenge-plat... https://pubs.aip.org/cdn-cgi/challenge-platform/h/b/flow/ov1/2574961096:1776888745:P4hk-3o_RhsRQQX88q8VNO601T4pZszmFrMeGiReD2Q/9f0763bbdc30c52b/bj8YJ5BPgSDeuqK19390EGijg0onBT88epVyJzfTJMs-1776889860-1.2.1.1-5ylhN.EujnjIoelZMzf1Eptd5DyIypteoiGuZBrZ.NTOoGc0GDiBoKrgHPGNicir — 200 — 13.8 KiB — 25 ms — h2blob:https://pubs.aip.org/c2a47ee1-bdfa-41af-b369-07a61a003e28pubs.aip.org/c2a47ee1-bdfa-41af-b36... blob:https://pubs.aip.org/c2a47ee1-bdfa-41af-b369-07a61a003e28 — 200 — -1 B — 41 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/turnstile/f/ov2/av0/rch/x6b0y/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/x6b0y/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=auto — 200 — 97.0 KiB — 33 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/2eef2a23-8bfb-4a3c-8318-358522037a67challenges.cloudflare.com/2eef2a23-... blob:https://challenges.cloudflare.com/2eef2a23-8bfb-4a3c-8318-358522037a67 — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/132605135:1776888746:UUgqxRDgmAerTIn1KCwsWYrFICNJQNFuswq5ghIZNvY/9f0763be2f331efc/EaiNiBKENGPPM4PKZFgZqLA_Z2HJmk84vebSqthAQyo-1776889860-1.2.1.1-n66cAHUNSrX9ctsRnGEgFayVhnDFF808NyCbzdACP1bnqOaoT.3bIxYrpJ.MJVHichallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/132605135:1776888746:UUgqxRDgmAerTIn1KCwsWYrFICNJQNFuswq5ghIZNvY/9f0763be2f331efc/EaiNiBKENGPPM4PKZFgZqLA_Z2HJmk84vebSqthAQyo-1776889860-1.2.1.1-n66cAHUNSrX9ctsRnGEgFayVhnDFF808NyCbzdACP1bnqOaoT.3bIxYrpJ.MJVHi — 200 — 271.4 KiB — 118 ms — h3blob:https://challenges.cloudflare.com/4b057560-02a7-423b-9880-d97faa3a262cchallenges.cloudflare.com/4b057560-... blob:https://challenges.cloudflare.com/4b057560-02a7-423b-9880-d97faa3a262c — 200 — -1 B — 103 ms — blobblob:https://challenges.cloudflare.com/4b057560-02a7-423b-9880-d97faa3a262cchallenges.cloudflare.com/4b057560-... blob:https://challenges.cloudflare.com/4b057560-02a7-423b-9880-d97faa3a262c — 200 — -1 B — 20 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/d/9f0763be2f331efc/1776889861156/RRV67O72nJCVdcIchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/d/9f0763be2f331efc/1776889861156/RRV67O72nJCVdcI — 200 — 2.0 KiB — 9 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/pat/9f0763be2f331efc/1776889861157/3c8ce8252be60b029c1f4f5abf80f678dbb1eb3dd3cea906a7d972c3392a80ed/A8v6w2ER71QaN-zchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/pat/9f0763be2f331efc/1776889861157/3c8ce8252be60b029c1f4f5abf80f678dbb1eb3dd3cea906a7d972c3392a80ed/A8v6w2ER71QaN-z — 401 — 1.7 KiB — 7 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/132605135:1776888746:UUgqxRDgmAerTIn1KCwsWYrFICNJQNFuswq5ghIZNvY/9f0763be2f331efc/EaiNiBKENGPPM4PKZFgZqLA_Z2HJmk84vebSqthAQyo-1776889860-1.2.1.1-n66cAHUNSrX9ctsRnGEgFayVhnDFF808NyCbzdACP1bnqOaoT.3bIxYrpJ.MJVHichallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/flow/ov1/132605135:1776888746:UUgqxRDgmAerTIn1KCwsWYrFICNJQNFuswq5ghIZNvY/9f0763be2f331efc/EaiNiBKENGPPM4PKZFgZqLA_Z2HJmk84vebSqthAQyo-1776889860-1.2.1.1-n66cAHUNSrX9ctsRnGEgFayVhnDFF808NyCbzdACP1bnqOaoT.3bIxYrpJ.MJVHi — 200 — 22.8 KiB — 34 ms — h3blob:https://challenges.cloudflare.com/85ca225e-f745-4abd-b35e-a19cc20372a4challenges.cloudflare.com/85ca225e-... blob:https://challenges.cloudflare.com/85ca225e-f745-4abd-b35e-a19cc20372a4 — 200 — -1 B — 18 ms — blob
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 436ms · 72KB · $6/mo
pubs.aip.org
Other
Costly
Execution 385ms
Transfer 72 KB
Monthly Cost $5/mo
Unattributable
Other
Optional
Execution 51ms
Transfer 0 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • pubs.aip.org adds 385ms and costs ~$5/month

100% 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

pubs.aip.org takes 385ms 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