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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
2
REVIEW
4
PASS
13
INFO
3

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

Mobile Desktop
100
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.
90
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.

536 ms

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

536 ms

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

0 ms

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

0.008

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

536 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.

536 ms

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
22
13 PASS 4 REVIEW 2 FIX
D
Third-Party Impact
Action
80% third-party, 0 ms blocking
FIX
80% third-party, 0 ms blocking
Warning::
Third-party code accounts for 80% of page weight (72.4 KiB of 90.7 KiB)
Info::
Third-party blocking time is low (0 ms)
20%
80%
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.

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
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.
B
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
91 KB transferred, 8 requests
PASS
91 KB transferred, 8 requests
Info::
Page weighs 106 KB (91 KB transferred)
Info::
8 HTTP requests
Info::
Estimated 0.02 g CO2 per page load
91 KB / 2.4 MB budget
91 KB transferred
8 requests
0.02 g CO2 per page load
Fonts 71.3 KiB 79%
JavaScript 9.5 KiB 10%
Other 4.1 KiB 5%
HTML 3.3 KiB 4%
Other 1.3 KiB 1%
CSS 1.1 KiB 1%
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
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
64ms total JS execution
PASS
64ms total JS execution
Info::
https://dev-shivaninevrekar.pantheonsite.io/cdn-cg...: 64ms CPU time

Main Thread Breakdown

Script Evaluation 65% Other 21% Style & Layout 10%
ScriptTotalScriptingParse/CompileParty
https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/scripts/jsd/main.js64ms61ms1ms1st
A+
Font Loading
1 fonts (71 KB)
PASS
1 fonts (71 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

71 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 536 ms LCP 536 mshttps://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2UcCo3FwrK3iLTcviYwYZ8UA... https://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2 — 71.3 KiB — 53 ms — font-display: swap
UcCo3FwrK3iLTcviYwYZ8UA... woff2 swap
Size 71 KB
Load time 53 ms
Start 179 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+
JS Bundles
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/h/g/scripts/jsd/330e41bb475c/main.js?10 KB—✓1st
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+
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-Timing Observability
1 Server-Timing entries advertised
PASS
1 Server-Timing entries advertised
Info::
Server-Timing header advertises 1 timing entries
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: gzip` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
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
Page Weight Inventory
8 resources · 91 KB · 0 KB savings available
PASS
8 resources · 91 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 91 KB
Warning::
2 third-party resources (80% of weight)
8 resources · 90.7 KiB · 2 third-party Within 1MB page-weight target
Font 79% · 71.3 KiB
JavaScript 10% · 9.5 KiB
Document 4% · 3.7 KiB
Image 4% · 3.4 KiB
Other 2% · 1.7 KiB
CSS 1% · 1.1 KiB
Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall
8 requests over 604ms
INFO
0 ms 200 ms 400 ms 600 ms FCP 536 ms LCP 536 mshttps://dev-shivaninevrekar.pantheonsite.io// https://dev-shivaninevrekar.pantheonsite.io/ — 200 — 3.3 KiB — 80 ms — h2https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,400..700&display=swapfonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,400..700&display=swap — 200 — 1.1 KiB — 73 ms — h2https://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2fonts.gstatic.com/s/inter/v20/UcCo3... https://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2 — 200 — 71.3 KiB — 53 ms — h3https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/scripts/jsd/main.js/cdn-cgi/challenge-platform/scripts... https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 423 B — 22 ms — h2https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/h/g/scripts/jsd/330e41bb475c/main.js?/cdn-cgi/challenge-platform/h/g/scr... https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/h/g/scripts/jsd/330e41bb475c/main.js? — 200 — 9.5 KiB — 23 ms — h2https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/h/g/jsd/oneshot/330e41bb475c/0.28232749556130776:1790158228:mhvd2Yigsp7I7fQldUrHeEbrWRnPB-hBIlrUGYCirKw/a3f8f7d47957d7d1/cdn-cgi/challenge-platform/h/g/jsd... https://dev-shivaninevrekar.pantheonsite.io/cdn-cgi/challenge-platform/h/g/jsd/oneshot/330e41bb475c/0.28232749556130776:1790158228:mhvd2Yigsp7I7fQldUrHeEbrWRnPB-hBIlrUGYCirKw/a3f8f7d47957d7d1 — 200 — 1.3 KiB — 39 ms — h2https://dev-shivaninevrekar.pantheonsite.io/favicon.ico/favicon.ico https://dev-shivaninevrekar.pantheonsite.io/favicon.ico — 302 — 332 B — 55 ms — h2https://dev-shivaninevrekar.pantheonsite.io/wp-includes/images/w-logo-gray-white-bg.png/wp-includes/images/w-logo-gray-whi... https://dev-shivaninevrekar.pantheonsite.io/wp-includes/images/w-logo-gray-white-bg.png — 200 — 3.4 KiB — 248 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
1 images, 6 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

6 KB

1 missing dimensions 1 missing lazy loading
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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