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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
3
REVIEW
4
PASS
5
INFO
2

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

Mobile Desktop
35
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
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.
92
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.

3.33 s

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

16.09 s

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

2.18 s

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

0.041

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

6.23 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.

22.26 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
14
5 PASS 4 REVIEW 3 FIX
F
Page Weight Budget
Action
2.9 MB transferred, 165 requests
FIX
2.9 MB transferred, 165 requests
Warning::
Page weighs 8.7 MB (2.9 MB transferred)
Warning::
JavaScript is 1.9 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.9 MB
Info::
Fonts are 250 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 250 KB
Warning::
165 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.60 g CO2 per page load
2.9 MB / 2.4 MB budget
2.9 MB transferred
165 requests
0.60 g CO2 per page load
JavaScript 1.9 MiB 66%
Images 443.3 KiB 15%
Fonts 250.0 KiB 9%
HTML 148.7 KiB 5%
Other 93.3 KiB 3%
Other 55.4 KiB 2%
Other 15.3 KiB 1%
Other 3.3 KiB 0%
CSS 165 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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

F
JS Execution Cost
Action
8816ms total JS execution
FIX
8816ms total JS execution
Warning::
Unattributable: 1238ms CPU time
Warning::
https://www.fastly.com/metrics/gtm/?id=GTM-W9FKFHD: 1121ms CPU time
Warning::
https://cdn.intellimize.co/snippet/117419923.js: 1111ms CPU time
Warning::
https://www.fastly.com/: 913ms CPU time
Warning::
https://www.fastly.com/app-15c697f1dd9686141621.js: 757ms CPU time
Info::
Third-party scripts: 4249ms (48% of total)

Main Thread Breakdown

Script Evaluation 54% Other 23% Style & Layout 11% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
Unattributable1238ms105ms0ms3rd
https://www.fastly.com/metrics/gtm/?id=GTM-W9FKFHD1121ms854ms66ms1st
https://cdn.intellimize.co/snippet/117419923.js1111ms859ms57ms3rd
https://www.fastly.com/913ms33ms22ms1st
https://www.fastly.com/app-15c697f1dd9686141621.js757ms556ms23ms1st
https://www.fastly.com/96a5c58d-064da3f07aef95a05dea.js696ms156ms35ms1st
https://www.fastly.com/metrics/gtm/?id=G-ETDRC9QJ6S&cx=c&gtm=4e6411619ms456ms91ms1st
https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js466ms228ms50ms3rd
https://www.fastly.com/metrics/gtm/?id=AW-982297532&cx=c&gtm=4e6411383ms306ms58ms1st
https://j.6sc.co/6si.min.js189ms155ms7ms3rd

Showing top 10 of 22 scripts

D
JS Bundles
Action
50 scripts, 466 KB unused
FIX
50 scripts, 466 KB unused
Warning::
https://www.fastly.com/metrics/gtm/?id=G-ETDRC9QJ6...: 70 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202601.1...: 68 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.fastly.com/metrics/gtm/?id=GTM-W9FKFHD: 67 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.fastly.com/metrics/gtm/?id=AW-98229753...: 61 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.fastly.com/b5d5c390-03644ae6f4353bedd8...: 55 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 466 KB
466 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.fastly.com/metrics/gtm/?id=G-ETDRC9QJ6S&cx=c&gtm=4e6411179 KB70 KB (39%)✓1st
https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js127 KB68 KB (53%)✓3rd
https://www.fastly.com/metrics/gtm/?id=GTM-W9FKFHD183 KB67 KB (37%)✓1st
https://www.fastly.com/metrics/gtm/?id=AW-982297532&cx=c&gtm=4e6411151 KB61 KB (40%)✓1st
https://www.fastly.com/b5d5c390-03644ae6f4353bedd82b.js67 KB55 KB (82%)✓1st
https://www.fastly.com/96a5c58d-064da3f07aef95a05dea.js85 KB51 KB (60%)✓1st
https://connect.facebook.net/en_US/fbevents.js95 KB36 KB (38%)✓3rd
https://cdn.intellimize.co/snippet/117419923.js104 KB35 KB (34%)✓3rd
https://www.fastly.com/app-15c697f1dd9686141621.js71 KB23 KB (33%)✓1st
https://js.zi-scripts.com/zi-tag.js6 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

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
Third-Party Impact
44% third-party, 0 ms blocking
REVIEW
44% third-party, 0 ms blocking
Info::
Third-party code accounts for 44% of page weight (1.3 MiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
56%
44%
First-party Third-party
B
Image Optimization
34 images, 0 KB saveable
REVIEW
34 images, 0 KB saveable
Info::
All images are well-optimized
34 images 443 KB
0 oversized -0 KB
27 legacy format
0 missing dimensions CLS risk
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0, must-revalidate
REVIEW
max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: max-age=0, must-revalidate
Info::
ETag present — enables conditional (304) responses
Cache-Control

max-age=0, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
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 (250 KB)
PASS
5 fonts (250 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

250 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.3 s LCP 16.1 shttps://www.fastly.com/static/inter-latin-wght-normal-e62404dc3261fb537f3a211edf6a2682.woff2inter-latin-wght-normal... https://www.fastly.com/static/inter-latin-wght-normal-e62404dc3261fb537f3a211edf6a2682.woff2 — 45.8 KiB — 0 ms — font-display: swaphttps://www.fastly.com/static/ESRebondGrotesque-Bold-71b661c9a1cc0e17703278991732c1c7.woff2ESRebondGrotesque-Bold-... https://www.fastly.com/static/ESRebondGrotesque-Bold-71b661c9a1cc0e17703278991732c1c7.woff2 — 58.7 KiB — 0 ms — font-display: swaphttps://www.fastly.com/static/ESRebondGrotesque-Medium-f2ce73a9fe478070893781580588fc94.woff2ESRebondGrotesque-Mediu... https://www.fastly.com/static/ESRebondGrotesque-Medium-f2ce73a9fe478070893781580588fc94.woff2 — 56.6 KiB — 0 ms — font-display: swaphttps://www.fastly.com/static/ESRebondGrotesque-Regular-3679101b453b50d72c9cf4c1ea749200.woff2ESRebondGrotesque-Regul... https://www.fastly.com/static/ESRebondGrotesque-Regular-3679101b453b50d72c9cf4c1ea749200.woff2 — 55.7 KiB — 0 ms — font-display: swaphttps://fastlyinc.widget.insent.ai/Rubik.woff2Rubik.woff2 https://fastlyinc.widget.insent.ai/Rubik.woff2 — 33.3 KiB — 0 ms — font-display: swap
inter-latin-wght-normal... woff2 swap
Size 46 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ESRebondGrotesque-Bold-... woff2 swap
Size 59 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ESRebondGrotesque-Mediu... woff2 swap
Size 57 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ESRebondGrotesque-Regul... woff2 swap
Size 56 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Rubik.woff2 woff2 swap
Size 33 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
8 hints, 0 missing preconnects
PASS
8 hints, 0 missing preconnects
Info::
Page uses 8 resource hint(s)

Current Resource Hints

preconnect
3
preload
5
dns-prefetch
—
prefetch
—

8 resource hints configured

Network Waterfall
165 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
48% of JavaScript execution is third-party
First-party Third-party 4249ms · 510KB · $14/mo
Unattributable
Other
Costly
Execution 1238ms
Transfer 0 KB
Monthly Cost $4/mo
cdn.intellimize.co
Other
Costly
Execution 1111ms
Transfer 104 KB
Unused 34%
Monthly Cost $4/mo
OneTrust
Consent
Essential
Execution 466ms
Transfer 127 KB
Unused 53%
Monthly Cost $2/mo
j.6sc.co
Other
Optional
Execution 189ms
Transfer 19 KB
Monthly Cost $1/mo
tags.srv.stackadapt.com
Other
Optional
Execution 175ms
Transfer 8 KB
Monthly Cost $1/mo
Facebook Pixel
Advertising
Optional
Execution 168ms
Transfer 95 KB
Unused 38%
Monthly Cost $1/mo
cdn.bizible.com
Other
Optional
Execution 156ms
Transfer 25 KB
Monthly Cost $0/mo
Facebook Pixel
Advertising
Optional
Execution 135ms
Transfer 38 KB
Monthly Cost $0/mo
www.fastly.com
Other
Optional
Execution 115ms
Transfer 0 KB
Monthly Cost $0/mo
tags.clickagy.com
Other
Optional
Execution 111ms
Transfer 14 KB
Monthly Cost $0/mo
ws-assets.zoominfo.com
Other
Optional
Execution 106ms
Transfer 14 KB
Monthly Cost $0/mo
fastlyinc.widget.insent.ai
Other
Optional
Execution 87ms
Transfer 23 KB
Monthly Cost $0/mo
LinkedIn Insight
Advertising
Optional
Execution 85ms
Transfer 19 KB
Monthly Cost $0/mo
Bing UET
Advertising
Optional
Execution 54ms
Transfer 15 KB
Monthly Cost $0/mo
OneTrust
Consent
Essential
Execution 52ms
Transfer 9 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 1238ms and costs ~$4/month
  • cdn.intellimize.co adds 1111ms and costs ~$4/month

48% 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 1238ms 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

cdn.intellimize.co takes 1111ms 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

53% of OneTrust's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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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