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.
1.47 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.56 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1 ms
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.
1.87 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.
2.56 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS BundlesAction35 scripts, 311 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/vendor/jquery-ui.js?tdakgb | 123 KB | 103 KB (84%) | ✗ | 3rd |
| https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.nl.2-2JqXXxIUQ.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfrHoeGWfp9mfKIskQ7twmalRFgNwg/m=el_main | 119 KB | 94 KB (79%) | ✓ | 3rd |
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/vendor/jszip.js?tdakgb | 86 KB | 60 KB (70%) | ✗ | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 78 KB | 54 KB (70%) | ✓ | 3rd |
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/vendor/jquery.fancybox.min.js | 22 KB | — | ✓ | 3rd |
| https://www.nh.gov/core/misc/announce.js?v=10.3.13-dev | 2 KB | — | ✓ | 3rd |
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/vendor/slick.min.js | 10 KB | — | ✓ | 3rd |
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/vendor/owl.carousel.min.js | 11 KB | — | ✓ | 3rd |
| https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit | 28 KB | — | ✓ | 3rd |
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/main.js | 12 KB | — | ✗ | 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
DPage Weight InventoryAction131 resources · 1.7 MB · 311 KB savings availableFIX
~311.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 131 resources | 1.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.7 MB transferred, 131 requestsREVIEW
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
Subset fonts to include only used characters, or switch to system font stacks.
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.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
CImage OptimizationAction27 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
BJS Execution Cost694ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.nh.gov/ | 326ms | 8ms | 1ms | 3rd |
| Unattributable | 192ms | 7ms | 0ms | 3rd |
| https://www.nh.gov/themes/custom/state_of_nh_core/library/js/vendor/modernizr-custom.js | 94ms | 3ms | 0ms | 3rd |
| https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.nl.2-2JqXXxIUQ.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfrHoeGWfp9mfKIskQ7twmalRFgNwg/m=el_main | 81ms | 57ms | 17ms | 3rd |
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 Loading7 fonts (275 KB)PASS
Web fonts
7
275 KB total
Render-blocking
0
of 7
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 Waterfall131 requests over 1831msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.nh.gov www.nh.gov | Other | 326ms | 11 KB | — | $4/mo | Costly |
Unattributable Unattributable | Other | 192ms | 0 KB | — | $3/mo | Optional |
www.nh.gov www.nh.gov | Other | 94ms | 3 KB | — | $1/mo | Optional |
translate.googleapis.com translate.googleapis.com | Other | 81ms | 119 KB | 79% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.nh.gov adds 326ms 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
www.nh.gov takes 326ms 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
79% of translate.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