Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
5.39 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.45 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
6.11 s
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.
7.35 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.
23.03 s
Page Load Progression
FPage Weight BudgetAction3.2 MB transferred, 97 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction13676ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cmp.osano.com/16CVqQSid6k3038vU/fef0f8b2-698d-45ee-89c5-d8fbf51fbfb7/osano.js | 2077ms | 1714ms | 61ms | 3rd |
| https://www.stltoday.com/ | 1918ms | 118ms | 35ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 1410ms | 1209ms | 149ms | 3rd |
| Unattributable | 872ms | 37ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-TDWDC2 | 694ms | 548ms | 139ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WXMV2VZ>m=4e64h1 | 656ms | 579ms | 71ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-4T2EB147B8&cx=c>m=4e64h1 | 610ms | 532ms | 73ms | 3rd |
| https://a.pub.network/stltoday-com/prebid.js | 596ms | 327ms | 170ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PDQV3N | 579ms | 442ms | 120ms | 3rd |
| https://a.pub.network/stltoday-com/pubfig.engine.mobile.js | 522ms | 353ms | 81ms | 3rd |
Showing top 10 of 24 scripts
FJS BundlesAction54 scripts, 1.3 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://a.pub.network/stltoday-com/prebid.js | 193 KB | 158 KB (82%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 144 KB (77%) | ✓ | 3rd |
| https://a.pub.network/stltoday-com/pubfig.engine.mobile.js | 152 KB | 122 KB (81%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-TDWDC2 | 203 KB | 68 KB (33%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5MTD44X>m=4e64h1 | 121 KB | 67 KB (55%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-LCNYTE04MR&cx=c>m=4e64h1 | 171 KB | 65 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-4T2EB147B8&cx=c>m=4e64h1 | 153 KB | 64 KB (42%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction97 resources · 3.2 MB · 1.3 MB savings availableFIX
~1.3 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 97 resources | 3.2 MiB | ||||||
CImage OptimizationAction16 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (60 KB)PASS
Web fonts
2
60 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints6 hints, 0 missing preconnectsPASS
Current Resource Hints
6 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AHTTP Cachingmax-age=300 (5 minutes)PASS
public, max-age=300
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 300 | Cache for 5 minutes |
Network Waterfall97 requests over 4974msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cmp.osano.com cmp.osano.com | Other | 2077ms | 78 KB | — | $36/mo | Costly |
www.stltoday.com www.stltoday.com | Other | 1918ms | 68 KB | — | $33/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 1410ms | 0 KB | 49% | $24/mo | Costly |
Unattributable Unattributable | Other | 872ms | 0 KB | — | $15/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 694ms | 203 KB | 33% | $12/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 656ms | 135 KB | 39% | $11/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 610ms | 153 KB | 42% | $11/mo | Costly |
a.pub.network a.pub.network | Other | 596ms | 193 KB | 82% | $10/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 579ms | 122 KB | 50% | $10/mo | Costly |
a.pub.network a.pub.network | Other | 522ms | 152 KB | 81% | $9/mo | Costly |
bloximages.newyork1.vip.townnews.com bloximages.newyork1.vip.townnews.com | Other | 453ms | 38 KB | — | $8/mo | Costly |
tagan.adlightning.com tagan.adlightning.com | Other | 434ms | 32 KB | 74% | $7/mo | Costly |
bloximages.newyork1.vip.townnews.com bloximages.newyork1.vip.townnews.com | Other | 397ms | 14 KB | — | $7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 369ms | 171 KB | 38% | $6/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 342ms | 188 KB | 77% | $6/mo | Costly |
bloximages.newyork1.vip.townnews.com bloximages.newyork1.vip.townnews.com | Other | 281ms | 115 KB | — | $5/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 219ms | 34 KB | — | $4/mo | Costly |
tagan.adlightning.com tagan.adlightning.com | Other | 214ms | 85 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 213ms | 121 KB | 55% | $4/mo | Costly |
cmp.osano.com cmp.osano.com | Other | 209ms | 29 KB | — | $4/mo | Costly |
a.pub.network a.pub.network | Other | 200ms | 26 KB | — | $3/mo | Optional |
bloximages.newyork1.vip.townnews.com bloximages.newyork1.vip.townnews.com | Other | 197ms | 2 KB | — | $3/mo | Optional |
tagan.adlightning.com tagan.adlightning.com | Other | 112ms | 15 KB | — | $2/mo | Optional |
bloximages.newyork1.vip.townnews.com bloximages.newyork1.vip.townnews.com | Other | 102ms | 26 KB | — | $2/mo | Optional |
These scripts may cost more than they're worth
- cmp.osano.com adds 2077ms and costs ~$36/month
- www.stltoday.com adds 1918ms and costs ~$33/month
- www.gstatic.com adds 1410ms and costs ~$24/month
- Unattributable adds 872ms and costs ~$15/month
- Google Tag Manager adds 694ms and costs ~$12/month
- Google Tag Manager adds 656ms and costs ~$11/month
- Google Tag Manager adds 610ms and costs ~$11/month
- a.pub.network adds 596ms and costs ~$10/month
- Google Tag Manager adds 579ms and costs ~$10/month
- a.pub.network adds 522ms and costs ~$9/month
- bloximages.newyork1.vip.townnews.com adds 453ms and costs ~$8/month
- tagan.adlightning.com adds 434ms and costs ~$7/month
- bloximages.newyork1.vip.townnews.com adds 397ms and costs ~$7/month
- Google Tag Manager adds 369ms and costs ~$6/month
- securepubads.g.doubleclick.net adds 342ms and costs ~$6/month
- bloximages.newyork1.vip.townnews.com adds 281ms and costs ~$5/month
- securepubads.g.doubleclick.net adds 219ms and costs ~$4/month
- tagan.adlightning.com adds 214ms and costs ~$4/month
- Google Tag Manager adds 213ms and costs ~$4/month
- cmp.osano.com adds 209ms and costs ~$4/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
cmp.osano.com takes 2077ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.stltoday.com takes 1918ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.gstatic.com takes 1410ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 872ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 694ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 656ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 610ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
a.pub.network takes 596ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
82% of a.pub.network's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 579ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
a.pub.network takes 522ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
81% of a.pub.network's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
bloximages.newyork1.vip.townnews.com takes 453ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
tagan.adlightning.com takes 434ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
74% of tagan.adlightning.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
bloximages.newyork1.vip.townnews.com takes 397ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 369ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
securepubads.g.doubleclick.net takes 342ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
77% of securepubads.g.doubleclick.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
bloximages.newyork1.vip.townnews.com takes 281ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
securepubads.g.doubleclick.net takes 219ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
tagan.adlightning.com takes 214ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 213ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
55% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
cmp.osano.com takes 209ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev