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.
4.30 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.78 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.51 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.71 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.
24.20 s
Page Load Progression
DPage Weight BudgetAction2.5 MB transferred, 169 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 CostAction9763ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://static-sda.thomasnet.com/_next/static/chunks/8353-487a523daf50f421.js | 3100ms | 2836ms | 59ms | 3rd |
| Unattributable | 1340ms | 307ms | 0ms | 3rd |
| https://www.thomasnet.com/ | 801ms | 46ms | 34ms | 3rd |
| https://static-sda.thomasnet.com/_next/static/chunks/5461-c0d2f299b0b53dbf.js | 632ms | 535ms | 96ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-TG6MFZ8EF2 | 535ms | 466ms | 64ms | 3rd |
| https://edge.fullstory.com/s/fs.js | 363ms | 265ms | 53ms | 3rd |
| https://fast.appcues.com/generic/main/7.20.2/appcues.main.6a6a274575024b516c91cfd03d287c29b5744063.js | 339ms | 296ms | 36ms | 3rd |
| https://static-sda.thomasnet.com/_next/static/chunks/52774a7f-bd12655bb7c45abf.js | 331ms | 228ms | 16ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 218ms | 196ms | 18ms | 3rd |
| https://tags.pw.adn.cloud/ADO3YZ/activation.js | 213ms | 191ms | 20ms | 3rd |
Showing top 10 of 26 scripts
FJS BundlesAction65 scripts, 1002 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static-sda.thomasnet.com/_next/static/chunks/5461-c0d2f299b0b53dbf.js | 225 KB | 199 KB (89%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-750802619&cx=c>m=4e64k1 | 145 KB | 106 KB (73%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WMW55VH&l=dataLayer | 158 KB | 78 KB (49%) | ✓ | 3rd |
| https://fast.appcues.com/generic/main/7.20.2/appcues.main.6a6a274575024b516c91cfd03d287c29b5744063.js | 101 KB | 72 KB (72%) | ✓ | 3rd |
| https://static-sda.thomasnet.com/_next/static/chunks/891cff7f-25367d46b99b73b1.js | 99 KB | 69 KB (71%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-TG6MFZ8EF2 | 173 KB | 65 KB (38%) | ✓ | 3rd |
| https://static-sda.thomasnet.com/_next/static/chunks/8353-487a523daf50f421.js | 141 KB | 62 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-750802619 | 146 KB | 55 KB (38%) | ✓ | 3rd |
| https://static-sda.thomasnet.com/_next/static/chunks/4840-a9e610e4dee22c4a.js | 57 KB | 42 KB (73%) | ✓ | 3rd |
| https://static-sda.thomasnet.com/_next/static/chunks/4c34e17c-89af891520bf439e.js | 38 KB | 37 KB (100%) | ✓ | 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 InventoryAction169 resources · 2.5 MB · 1002 KB savings availableFIX
~1002.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 169 resources | 2.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization38 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 Loading5 fonts (86 KB)PASS
Web fonts
5
86 KB total
Render-blocking
0
of 5
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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall169 requests over 4799msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
static-sda.thomasnet.com static-sda.thomasnet.com | Other | 3100ms | 141 KB | 44% | $41/mo | Costly |
Unattributable Unattributable | Other | 1340ms | 0 KB | — | $18/mo | Costly |
www.thomasnet.com www.thomasnet.com | Other | 801ms | 42 KB | — | $11/mo | Costly |
static-sda.thomasnet.com static-sda.thomasnet.com | Other | 632ms | 225 KB | 89% | $8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 535ms | 173 KB | 38% | $7/mo | Costly |
edge.fullstory.com edge.fullstory.com | Other | 363ms | 80 KB | 37% | $5/mo | Costly |
fast.appcues.com fast.appcues.com | Other | 339ms | 101 KB | 72% | $4/mo | Costly |
static-sda.thomasnet.com static-sda.thomasnet.com | Other | 331ms | 38 KB | — | $4/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 218ms | 26 KB | — | $3/mo | Costly |
tags.pw.adn.cloud tags.pw.adn.cloud | Other | 213ms | 44 KB | 57% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 197ms | 158 KB | 49% | $3/mo | Optional |
tag.demandbase.com tag.demandbase.com | Other | 196ms | 18 KB | — | $3/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 168ms | 97 KB | 38% | $2/mo | Optional |
Segment cdn.segment.com | Analytics | 155ms | 22 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 140ms | 146 KB | 38% | $2/mo | Optional |
js.datadome.co js.datadome.co | Other | 137ms | 39 KB | — | $2/mo | Optional |
d.adroll.com d.adroll.com | Other | 132ms | 1 KB | — | $2/mo | Optional |
Segment cdn.segment.com | Analytics | 103ms | 55 KB | 57% | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 99ms | 35 KB | — | $1/mo | Optional |
Segment cdn.segment.com | Analytics | 90ms | 51 KB | 61% | $1/mo | Optional |
Segment cdn.segment.com | Analytics | 85ms | 55 KB | 56% | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 84ms | 19 KB | — | $1/mo | Optional |
Segment cdn.segment.com | Analytics | 80ms | 9 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 79ms | 145 KB | 73% | $1/mo | Optional |
cdn.sprig.com cdn.sprig.com | Other | 78ms | 28 KB | — | $1/mo | Optional |
static-sda.thomasnet.com static-sda.thomasnet.com | Other | 68ms | 3 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- static-sda.thomasnet.com adds 3100ms and costs ~$41/month
- Unattributable adds 1340ms and costs ~$18/month
- www.thomasnet.com adds 801ms and costs ~$11/month
- static-sda.thomasnet.com adds 632ms and costs ~$8/month
- Google Tag Manager adds 535ms and costs ~$7/month
- edge.fullstory.com adds 363ms and costs ~$5/month
- fast.appcues.com adds 339ms and costs ~$4/month
- static-sda.thomasnet.com adds 331ms and costs ~$4/month
- Microsoft Clarity adds 218ms and costs ~$3/month
- tags.pw.adn.cloud adds 213ms 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
static-sda.thomasnet.com takes 3100ms 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 1340ms 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.thomasnet.com takes 801ms 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
static-sda.thomasnet.com takes 632ms 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
89% of static-sda.thomasnet.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
Google Tag Manager takes 535ms 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
edge.fullstory.com takes 363ms 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
fast.appcues.com takes 339ms 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
72% of fast.appcues.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
static-sda.thomasnet.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
Microsoft Clarity takes 218ms 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
tags.pw.adn.cloud 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
57% of tags.pw.adn.cloud'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
57% of Segment'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
61% of Segment'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
56% of Segment'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
73% 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