Performance
· 15 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.
876 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.81 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
480 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.054
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.91 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.
8.62 s
Page Load Progression
4.8 s 9.6 s
14.3 s 19.1 s
23.9 s
28.7 s
33.5 s
38.2 sFPage Weight BudgetAction8.2 MB transferred, 305 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
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction8845ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://d15kdpgjg3unno.cloudfront.net/oPS.js?cid=31 | 2787ms | 2771ms | 3ms | 3rd |
| https://www.dallasnews.com/ | 2464ms | 355ms | 4ms | 3rd |
| Unattributable | 718ms | 76ms | 0ms | 3rd |
| https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js | 355ms | 282ms | 33ms | 3rd |
| https://www.dallasnews.com/_next/static/chunks/framework-f80cd7bf984bdace.js | 331ms | 286ms | 3ms | 3rd |
| https://cdn.p-n.io/pushly-sdk.min.js?domain_key=s9NUzsYxG3WUWH2gQtxIeH2qO9ijFVuew7WP | 310ms | 284ms | 4ms | 3rd |
| https://htlbid.com/v3/dallasmorningnews.com/hnpbid.js | 255ms | 241ms | 9ms | 3rd |
| https://s.ntv.io/serve/load.js | 235ms | 199ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N799RG7S>m=4e64h1 | 212ms | 161ms | 11ms | 3rd |
| https://0272ac85-5199-4024-a555-397c3d825d95.edge.permutive.app/6af07a2d-d0d3-4dfd-961a-bab066126220-web.js | 192ms | 140ms | 24ms | 3rd |
Showing top 10 of 21 scripts
FJS BundlesAction113 scripts, 1.5 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://s.ntv.io/serve/load.js | 251 KB | 190 KB (76%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 188 KB | 124 KB (66%) | ✓ | 3rd |
| https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js | 257 KB | 101 KB (39%) | ✓ | 3rd |
| https://cdn.ex.co/player/ap/4.230.0-947b4e1/player.js | 139 KB | 92 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17964354794&cx=c>m=4e64h1 | 132 KB | 81 KB (62%) | ✓ | 3rd |
| https://cdn.ex.co/player/hls/1.6.2.ST-exco/hls.min.js | 137 KB | 76 KB (56%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N799RG7S>m=4e64h1 | 175 KB | 67 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-15089575&cx=c>m=4e64h1 | 129 KB | 61 KB (47%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-953508353&cx=c>m=4e64h1 | 147 KB | 60 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=G-1XR291WVM7&cx=c>m=4e64h1 | 145 KB | 60 KB (41%) | ✓ | 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 InventoryAction305 resources · 8.2 MB · 1.5 MB savings availableFIX
~1.5 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 305 resources | 8.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization33 images, 0 KB saveableREVIEW
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 Loading9 fonts (117 KB)PASS
Web fonts
9
117 KB total
Render-blocking
0
of 9
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 HintsNo optimization neededPASS
Network Waterfall305 requests over 43564msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
d15kdpgjg3unno.cloudfront.net d15kdpgjg3unno.cloudfront.net | Other | 2787ms | 60 KB | 42% | $37/mo | Costly |
www.dallasnews.com www.dallasnews.com | Other | 2464ms | 130 KB | — | $33/mo | Costly |
Unattributable Unattributable | Other | 718ms | 0 KB | — | $10/mo | Costly |
cdn.ketchjs.com cdn.ketchjs.com | Other | 355ms | 257 KB | 39% | $5/mo | Costly |
www.dallasnews.com www.dallasnews.com | Other | 331ms | 53 KB | 38% | $4/mo | Costly |
cdn.p-n.io cdn.p-n.io | Other | 310ms | 45 KB | — | $4/mo | Costly |
htlbid.com htlbid.com | Other | 255ms | 146 KB | 29% | $3/mo | Costly |
s.ntv.io s.ntv.io | Other | 235ms | 251 KB | 76% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 212ms | 175 KB | 38% | $3/mo | Costly |
0272ac85-5199-4024-a555-397c3d825d95.edge.permutive.app 0272ac85-5199-4024-a555-397c3d825d95.edge.permutive.app | Other | 192ms | 226 KB | 9% | $3/mo | Optional |
jadserve.postrelease.com jadserve.postrelease.com | Other | 163ms | 3 KB | — | $2/mo | Optional |
cdn.ex.co cdn.ex.co | Other | 142ms | 137 KB | 56% | $2/mo | Optional |
player.ex.co player.ex.co | Other | 125ms | 175 KB | 33% | $2/mo | Optional |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 100ms | 91 KB | 45% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 88ms | 145 KB | 41% | $1/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 86ms | 188 KB | 66% | $1/mo | Optional |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 59ms | 70 KB | 54% | $1/mo | Optional |
sdk.mrf.io sdk.mrf.io | Other | 58ms | 59 KB | 43% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 56ms | 130 KB | 42% | $1/mo | Optional |
sdk.mrf.io sdk.mrf.io | Other | 54ms | 24 KB | — | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 53ms | 125 KB | 31% | $1/mo | Optional |
These scripts may cost more than they're worth
- d15kdpgjg3unno.cloudfront.net adds 2787ms and costs ~$37/month
- www.dallasnews.com adds 2464ms and costs ~$33/month
- Unattributable adds 718ms and costs ~$10/month
- cdn.ketchjs.com adds 355ms and costs ~$5/month
- www.dallasnews.com adds 331ms and costs ~$4/month
- cdn.p-n.io adds 310ms and costs ~$4/month
- htlbid.com adds 255ms and costs ~$3/month
- s.ntv.io adds 235ms and costs ~$3/month
- Google Tag Manager adds 212ms and costs ~$3/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
d15kdpgjg3unno.cloudfront.net takes 2787ms 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.dallasnews.com takes 2464ms 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 718ms 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
cdn.ketchjs.com takes 355ms 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.dallasnews.com takes 331ms 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
cdn.p-n.io takes 310ms 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
htlbid.com takes 255ms 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
s.ntv.io takes 235ms 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
76% of s.ntv.io'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 212ms 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
56% of cdn.ex.co'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
66% 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
54% of fundingchoicesmessages.google.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