Skip to content
https://FairfieldConcrete.org

Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
2
REVIEW
7
PASS
10
INFO
2

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

Mobile Desktop
78
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
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.
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.

1.06 s

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

2.41 s

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.

0.162

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

1.06 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.

2.41 s

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
21
10 PASS 7 REVIEW 2 FIX
F
Page Weight Budget
Action
4.0 MB transferred, 17 requests
FIX
4.0 MB transferred, 17 requests
Critical::
Page weighs 4.8 MB (4.0 MB transferred)
Warning::
Images are 3.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.5 MB
Info::
17 HTTP requests
Info::
Estimated 0.83 g CO2 per page load
4.0 MB / 2.4 MB budget
4.0 MB transferred
17 requests
0.83 g CO2 per page load
Images 3.5 MiB 87%
JavaScript 428.7 KiB 11%
Fonts 94.8 KiB 2%
HTML 7.8 KiB 0%
CSS 1.0 KiB 0%
Other 640 B 0%
Other 554 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

D
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.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Info::
All images are well-optimized
8 images 3.5 MB
0 oversized -0 KB
8 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
3 scripts, 247 KB unused
REVIEW
3 scripts, 247 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-M2PQ...: 110 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-P33...: 70 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-M2PQ...: 67 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 247 KB
247 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-M2PQ1KSEJB&cx=c&gtm=4e65m1158 KB110 KB (70%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-P3366BT8113 KB70 KB (62%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-M2PQ1KSEJB158 KB67 KB (43%)✓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

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
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main 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.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
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.
C
Page Weight Inventory
Action
17 resources · 4.0 MB · 247 KB savings available
REVIEW
17 resources · 4.0 MB · 247 KB savings available
Warning::
Page weight 4.0 MB exceeds 1 MB target by 3.0 MB
Got: 4.0 MB Expected: ≤ 1 MB
Info::
~247 KB of savings available
Info::
7 third-party resources (13% of weight)
Info::
7 resources over 200KB
17 resources · 4.0 MiB · 7 third-party 3.0 MiB over 1MB target
Image 87% · 3.5 MiB
JavaScript 11% · 428.7 KiB
Font 2% · 94.8 KiB
Document 0% · 8.4 KiB
CSS 0% · 1.0 KiB
Other 0% · 554 B

~247.3 KiB of savings available

Remove unused JavaScript: 247.3 KiB
A+
Third-Party Impact
13% third-party, 0 ms blocking
PASS
13% third-party, 0 ms blocking
Info::
Third-party code accounts for 13% of page weight (525.1 KiB of 4.0 MiB)
Info::
Third-party blocking time is low (0 ms)
87%
First-party Third-party
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+
JS Execution Cost
72ms total JS execution
PASS
72ms total JS execution
Info::
https://fairfieldconcrete.org/: 72ms CPU time

Main Thread Breakdown

Script Evaluation 33% Other 24% Style & Layout 23% Script Parsing & Compilation 13% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://fairfieldconcrete.org/72ms2ms1ms1st
A+
Font Loading
2 fonts (95 KB)
PASS
2 fonts (95 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

95 KB total

Render-blocking

0

of 2

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 2.0 s 2.5 s FCP 1.1 s LCP 2.4 shttps://fonts.gstatic.com/s/figtree/v9/_Xms-HUzqDCFdgfMm4S9DaRvzig.woff2_Xms-HUzqDCFdgfMm4S9DaR... https://fonts.gstatic.com/s/figtree/v9/_Xms-HUzqDCFdgfMm4S9DaRvzig.woff2 — 19.7 KiB — 62 ms — font-display: swaphttps://fonts.gstatic.com/s/bricolagegrotesque/v9/3y9K6as8bTXq_nANBjzKo3IeZx8z6up5BeSl9D4dj_x9PpZBMlGIInHWVyNJ.woff23y9K6as8bTXq_nANBjzKo3I... https://fonts.gstatic.com/s/bricolagegrotesque/v9/3y9K6as8bTXq_nANBjzKo3IeZx8z6up5BeSl9D4dj_x9PpZBMlGIInHWVyNJ.woff2 — 75.1 KiB — 108 ms — font-display: swap
_Xms-HUzqDCFdgfMm4S9DaR... woff2 swap
Size 20 KB
Load time 62 ms
Start 534 ms
Risk FOUT — text flashes from fallback to web font
3y9K6as8bTXq_nANBjzKo3I... woff2 swap
Size 75 KB
Load time 108 ms
Start 534 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
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
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::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Hostinger

Network Waterfall
17 requests over 1266ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.1 s LCP 2.4 shttps://fairfieldconcrete.org// https://fairfieldconcrete.org/ — 200 — 7.8 KiB — 314 ms — h2https://www.googletagmanager.com/gtag/js?id=G-M2PQ1KSEJBwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-M2PQ1KSEJB — 200 — 158.1 KiB — 305 ms — h2https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500..800&family=Figtree:wght@400..700&display=swapfonts.googleapis.com/css2?family=Br... https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500..800&family=Figtree:wght@400..700&display=swap — 200 — 1.0 KiB — 171 ms — h2https://fairfieldconcrete.org/images/web-img_0701.jpg/images/web-img_0701.jpg https://fairfieldconcrete.org/images/web-img_0701.jpg — 200 — 684.7 KiB — 740 ms — h2https://fairfieldconcrete.org/images/logo-web.png/images/logo-web.png https://fairfieldconcrete.org/images/logo-web.png — 200 — 133.3 KiB — 518 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-P3366BT8www.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-P3366BT8 — 200 — 112.7 KiB — 289 ms — h2https://fairfieldconcrete.org/images/web-img_1493.jpg/images/web-img_1493.jpg https://fairfieldconcrete.org/images/web-img_1493.jpg — 200 — 518.1 KiB — 539 ms — h2https://fairfieldconcrete.org/images/web-img_1623.jpg/images/web-img_1623.jpg https://fairfieldconcrete.org/images/web-img_1623.jpg — 200 — 205.2 KiB — 524 ms — h2https://fairfieldconcrete.org/images/web-img_0683.jpg/images/web-img_0683.jpg https://fairfieldconcrete.org/images/web-img_0683.jpg — 200 — 408.7 KiB — 543 ms — h2https://fairfieldconcrete.org/images/web-stamped-patio.jpg/images/web-stamped-patio.jpg https://fairfieldconcrete.org/images/web-stamped-patio.jpg — 200 — 432.2 KiB — 529 ms — h2https://fairfieldconcrete.org/images/web-img_3574.jpg/images/web-img_3574.jpg https://fairfieldconcrete.org/images/web-img_3574.jpg — 200 — 623.8 KiB — 615 ms — h2https://fairfieldconcrete.org/images/web-img_3423.jpg/images/web-img_3423.jpg https://fairfieldconcrete.org/images/web-img_3423.jpg — 200 — 535.2 KiB — 622 ms — h2https://fonts.gstatic.com/s/figtree/v9/_Xms-HUzqDCFdgfMm4S9DaRvzig.woff2fonts.gstatic.com/s/figtree/v9/_Xms... https://fonts.gstatic.com/s/figtree/v9/_Xms-HUzqDCFdgfMm4S9DaRvzig.woff2 — 200 — 19.7 KiB — 62 ms — h3https://fonts.gstatic.com/s/bricolagegrotesque/v9/3y9K6as8bTXq_nANBjzKo3IeZx8z6up5BeSl9D4dj_x9PpZBMlGIInHWVyNJ.woff2fonts.gstatic.com/s/bricolagegrotes... https://fonts.gstatic.com/s/bricolagegrotesque/v9/3y9K6as8bTXq_nANBjzKo3IeZx8z6up5BeSl9D4dj_x9PpZBMlGIInHWVyNJ.woff2 — 200 — 75.1 KiB — 108 ms — h3https://www.googletagmanager.com/gtag/js?id=G-M2PQ1KSEJB&cx=c&gtm=4e65m1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-M2PQ1KSEJB&cx=c&gtm=4e65m1 — 200 — 157.9 KiB — 116 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-M2PQ1KSEJB&gtm=45je65m1v9253667379za200zb9253664584zd9253664584&_p=1779857639267&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=678484468.1779857640&frm=0&pscdl=noapi&rcb=7&sr=800x600&uaa=x86&uab=64&uafvl=Not%252FA)Brand%3B99.0.0.0%7CChromium%3B148.0.7778.178&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938469~119034492&sid=1779857639&sct=1&seg=0&dl=https%3A%2F%2Ffairfieldconcrete.org%2F&dt=Concrete%20Contractor%20in%20Fairfield%2C%20CA%20%7C%20Fairfield%20Concrete%20Co.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=709region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-M2PQ1KSEJB&gtm=45je65m1v9253667379za200zb9253664584zd9253664584&_p=1779857639267&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=678484468.1779857640&frm=0&pscdl=noapi&rcb=7&sr=800x600&uaa=x86&uab=64&uafvl=Not%252FA)Brand%3B99.0.0.0%7CChromium%3B148.0.7778.178&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938469~119034492&sid=1779857639&sct=1&seg=0&dl=https%3A%2F%2Ffairfieldconcrete.org%2F&dt=Concrete%20Contractor%20in%20Fairfield%2C%20CA%20%7C%20Fairfield%20Concrete%20Co.&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=709 — 204 — 554 B — 63 ms — h2https://fairfieldconcrete.org/favicon.ico/favicon.ico https://fairfieldconcrete.org/favicon.ico — 404 — 640 B — 106 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
14 images, 2945 KB total, 1410 KB wasted
INFO

Image Optimization Audit

Total Images

14

Total Size

2945 KB

Oversized

4

Wasted

1410 KB

12 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.

Send Feedback