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.
4.15 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
444 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.671
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.11 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.
17.32 s
Page Load Progression
FPage Weight BudgetAction3.3 MB transferred, 112 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
DJS Execution CostAction2419ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 421ms | 7ms | 0ms | 3rd |
| https://www.gsa.gov/ | 332ms | 12ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W4SGTNW | 277ms | 232ms | 38ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-HBYXWFP794&cx=c>m=4e64k0h2 | 223ms | 187ms | 34ms | 3rd |
| https://www.gsa.gov/sites/gsa.gov/files/js/js_ynERFnCjSxXEMR6BIKrwpC3iUumKJuLYRzeJp5a5lzo.js?scope=footer&delta=0&language=en&theme=gsa&include=eJx9kl124zAIhTfkVk9dDwdLWKGRhI7AadLVF9vpz2Rm-oKtzxfBxcTaQ0UuJgtfp4SGBW80wkwnvLAMnRIPisYXCl9v8KoTVRqZWrzBjK15xiOYskguBIY5ZA-P52d8xeufsE5ZMSTsYAPjmVveQS4yY3nSOLib7ugklTpmgohGWQbTwbn11eCChd0KS9uhstET1z7kQhuAeKbEJuMFTlS6975Brtt9VGdKu2iRUWEQxu0eDX-jiVuiTh6aQaW2hkcAqEresZdITBVMpMBcJJ7D3XfFrlAEk8_rH6pPVHgeuJtULKTeR3TrJ7Sw95soeT1VzNvI1Ny6GkcNaawdy_M3mWx2Zca93RmVJpPOEY5ZrmpS-R0PxxijeHlpQNeOLQGW8ot88SairM2SvDXwrPsa_D9jG6kubs43yj83-0XLjQ2ODfipWkTM_9_xuI_pNq36ljTs8QPFyCQ0 | 191ms | 122ms | 29ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 185ms | 146ms | 30ms | 3rd |
| https://www.gsa.gov/sites/gsa.gov/files/css/css_nU33pZ0_dpTMtsd_seB_fyrGMbVa53ZqOsWw2259USY.css?delta=3&language=en&theme=gsa&include=eJx9UdGOAiEM_CEiT_c9pEBlewIlFNS9r7-uuqcxF0MCZZjS6TRkEFltQRFIKCZwRxv7bJAP8A3XO1C5F8j0gyZSxzDojDZl9pCdjDVTTQYL9oQ1rM5DrdjtO2A0QYv01e6BSQK2dapjexVw4YSRBvcvt2Bu-scGRhi6fEZxQcQ06JA6tEV2mU_kMGubPpMsGI3mR8LiBnN2PnM42R3K5Dt00nbbwoMdZD-LC1MGF_qBQVzFvjwZAS1_5B7QhQWG9uYxRozu7tvWv6wysFgPgkblqjqSTbUWqyczvFITFKzzQXkBNgtVy-BGwTUdw7sUCDqFqKHDa4MaVVX-QH869oH0j7Uv5COzDsXej4dfqxlr49TpuNq_yEy5xH0Uj8ttN2fCi9jbfigcZ8ZfwcH2kA | 175ms | 0ms | 0ms | 3rd |
| https://gov1.siteintercept.qualtrics.com/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=www.gsa.gov | 142ms | 114ms | 9ms | 3rd |
| https://www.gsa.gov/sites/gsa.gov/files/js/js_I5MWQK7QxJZ_tfMFBblR60ZEWNcKKUh0IdmE33saByU.js?scope=footer&delta=2&language=en&theme=gsa&include=eJx9kl124zAIhTfkVk9dDwdLWKGRhI7AadLVF9vpz2Rm-oKtzxfBxcTaQ0UuJgtfp4SGBW80wkwnvLAMnRIPisYXCl9v8KoTVRqZWrzBjK15xiOYskguBIY5ZA-P52d8xeufsE5ZMSTsYAPjmVveQS4yY3nSOLib7ugklTpmgohGWQbTwbn11eCChd0KS9uhstET1z7kQhuAeKbEJuMFTlS6975Brtt9VGdKu2iRUWEQxu0eDX-jiVuiTh6aQaW2hkcAqEresZdITBVMpMBcJJ7D3XfFrlAEk8_rH6pPVHgeuJtULKTeR3TrJ7Sw95soeT1VzNvI1Ny6GkcNaawdy_M3mWx2Zca93RmVJpPOEY5ZrmpS-R0PxxijeHlpQNeOLQGW8ot88SairM2SvDXwrPsa_D9jG6kubs43yj83-0XLjQ2ODfipWkTM_9_xuI_pNq36ljTs8QPFyCQ0 | 100ms | 39ms | 3ms | 3rd |
| https://maps.googleapis.com/maps-api-v3/api/js/64/9c/main.js | 90ms | 60ms | 22ms | 3rd |
Showing top 10 of 14 scripts
FJS BundlesAction44 scripts, 527 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c>m=4e64k0h2 | 147 KB | 106 KB (72%) | ✓ | 3rd |
| https://www.gsa.gov/sites/gsa.gov/files/js/js_ynERFnCjSxXEMR6BIKrwpC3iUumKJuLYRzeJp5a5lzo.js?scope=footer&delta=0&language=en&theme=gsa&include=eJx9kl124zAIhTfkVk9dDwdLWKGRhI7AadLVF9vpz2Rm-oKtzxfBxcTaQ0UuJgtfp4SGBW80wkwnvLAMnRIPisYXCl9v8KoTVRqZWrzBjK15xiOYskguBIY5ZA-P52d8xeufsE5ZMSTsYAPjmVveQS4yY3nSOLib7ugklTpmgohGWQbTwbn11eCChd0KS9uhstET1z7kQhuAeKbEJuMFTlS6975Brtt9VGdKu2iRUWEQxu0eDX-jiVuiTh6aQaW2hkcAqEresZdITBVMpMBcJJ7D3XfFrlAEk8_rH6pPVHgeuJtULKTeR3TrJ7Sw95soeT1VzNvI1Ny6GkcNaawdy_M3mWx2Zca93RmVJpPOEY5ZrmpS-R0PxxijeHlpQNeOLQGW8ot88SairM2SvDXwrPsa_D9jG6kubs43yj83-0XLjQ2ODfipWkTM_9_xuI_pNq36ljTs8QPFyCQ0 | 117 KB | 85 KB (73%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-HBYXWFP794&cx=c>m=4e64k0h2 | 155 KB | 63 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 147 KB | 61 KB (42%) | ✓ | 3rd |
| https://maps.googleapis.com/maps-api-v3/api/js/64/9c/main.js | 83 KB | 56 KB (67%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W4SGTNW | 146 KB | 56 KB (38%) | ✓ | 3rd |
| https://www.gsa.gov/libraries/fancy-apps-photo-gallery/dist/fancybox/fancybox.umd.js?tdm59v | 42 KB | 37 KB (88%) | ✓ | 3rd |
| https://www.gsa.gov/sites/gsa.gov/files/js/js_KllTCYhv7q9bVodHvxc4brFY45MoMgBX0thkhpUcYS8.js?scope=footer&delta=4&language=en&theme=gsa&include=eJx9kl124zAIhTfkVk9dDwdLWKGRhI7AadLVF9vpz2Rm-oKtzxfBxcTaQ0UuJgtfp4SGBW80wkwnvLAMnRIPisYXCl9v8KoTVRqZWrzBjK15xiOYskguBIY5ZA-P52d8xeufsE5ZMSTsYAPjmVveQS4yY3nSOLib7ugklTpmgohGWQbTwbn11eCChd0KS9uhstET1z7kQhuAeKbEJuMFTlS6975Brtt9VGdKu2iRUWEQxu0eDX-jiVuiTh6aQaW2hkcAqEresZdITBVMpMBcJJ7D3XfFrlAEk8_rH6pPVHgeuJtULKTeR3TrJ7Sw95soeT1VzNvI1Ny6GkcNaawdy_M3mWx2Zca93RmVJpPOEY5ZrmpS-R0PxxijeHlpQNeOLQGW8ot88SairM2SvDXwrPsa_D9jG6kubs43yj83-0XLjQ2ODfipWkTM_9_xuI_pNq36ljTs8QPFyCQ0 | 37 KB | 22 KB (59%) | ✓ | 3rd |
| https://gov1.siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=cemgsa | 32 KB | 22 KB (70%) | ✓ | 3rd |
| https://gov1.siteintercept.qualtrics.com/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=www.gsa.gov | 36 KB | 21 KB (60%) | ✓ | 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 InventoryAction112 resources · 3.3 MB · 527 KB savings availableFIX
~526.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 112 resources | 3.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction36 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
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
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
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
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 (41 KB)PASS
Web fonts
2
41 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 HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall112 requests over 4388msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 421ms | 0 KB | — | $6/mo | Costly |
www.gsa.gov www.gsa.gov | Other | 332ms | 29 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 277ms | 146 KB | 38% | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 223ms | 155 KB | 40% | $3/mo | Costly |
www.gsa.gov www.gsa.gov | Other | 191ms | 117 KB | 73% | $3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 185ms | 147 KB | 42% | $2/mo | Optional |
www.gsa.gov www.gsa.gov | Other | 175ms | 107 KB | — | $2/mo | Optional |
gov1.siteintercept.qualtrics.com gov1.siteintercept.qualtrics.com | Other | 142ms | 36 KB | 60% | $2/mo | Optional |
www.gsa.gov www.gsa.gov | Other | 100ms | 13 KB | — | $1/mo | Optional |
maps.googleapis.com maps.googleapis.com | Other | 90ms | 83 KB | 67% | $1/mo | Optional |
www.gsa.gov www.gsa.gov | Other | 90ms | 37 KB | 59% | $1/mo | Optional |
dap.digitalgov.gov dap.digitalgov.gov | Other | 81ms | 4 KB | — | $1/mo | Optional |
www.gsa.gov www.gsa.gov | Other | 57ms | 27 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 56ms | 147 KB | 72% | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 421ms and costs ~$6/month
- www.gsa.gov adds 332ms and costs ~$4/month
- Google Tag Manager adds 277ms and costs ~$4/month
- Google Tag Manager adds 223ms 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
Unattributable takes 421ms 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.gsa.gov takes 332ms 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 277ms 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 223ms 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
73% of www.gsa.gov'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
60% of gov1.siteintercept.qualtrics.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
67% of maps.googleapis.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
59% of www.gsa.gov'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
72% 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