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.
924 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.56 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
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.
1.90 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.
1.56 s
Page Load Progression
FPage Weight BudgetAction3.5 MB transferred, 34 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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DPage Weight InventoryAction34 resources · 3.5 MB · 103 KB savings availableFIX
~102.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 34 resources | 3.5 MiB | ||||||
BImage Optimization10 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
BJS Bundles8 scripts, 103 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-01H6J3L7N6 | 157 KB | 65 KB (41%) | ✓ | 3rd |
| https://www.nysenate.gov/sites/default/files/js/js_1aYZpkP1KwpjEJhwoALf4UTdYUu1ZHCe1OPjEh3ROJ4.js?scope=footer&delta=0&language=en&theme=nys&include=eJx1jeEKgzAMhF_Ito9UMjzTDptIWud8-1UQxhz-Cffx3ZFJpdGGqgVh-mZfXzxM987XlMvAqjwjNuLA_VzZ05Peg-w1pj5biBETTMMPHR5Crc8SjkegthpGV5vafrWCrZpqcTPJmIX__IkugUbYrV5Mi7asQrN7kEivGmU5a6VHVyDrB0oocLY | 51 KB | 38 KB (74%) | ✓ | 3rd |
| https://www.nysenate.gov/sites/default/files/js/js_UIJrjmnibZIqr1SDb-o545VRgM44_BDJF33KyXGVIQI.js?scope=header&delta=0&language=en&theme=nys&include=eJx1jeEKgzAMhF_Ito9UMjzTDptIWud8-1UQxhz-Cffx3ZFJpdGGqgVh-mZfXzxM987XlMvAqjwjNuLA_VzZ05Peg-w1pj5biBETTMMPHR5Crc8SjkegthpGV5vafrWCrZpqcTPJmIX__IkugUbYrV5Mi7asQrN7kEivGmU5a6VHVyDrB0oocLY | 0 KB | — | ✓ | 3rd |
| https://www.nysenate.gov/modules/contrib/google_tag/js/gtag.js?tdwgv2 | 1 KB | — | ✓ | 3rd |
| https://www.nysenate.gov/modules/contrib/seckit/js/seckit.document_write.js | 0 KB | — | ✓ | 3rd |
| https://use.fontawesome.com/releases/v5.15.4/js/all.js | 436 KB | — | ✓ | 3rd |
| https://use.fontawesome.com/releases/v5.15.4/js/v4-shims.js | 5 KB | — | ✓ | 3rd |
| https://www.nysenate.gov/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? | 13 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
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost401ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.nysenate.gov/ | 174ms | 11ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-01H6J3L7N6 | 82ms | 66ms | 15ms | 3rd |
| Unattributable | 76ms | 2ms | 0ms | 3rd |
| https://www.nysenate.gov/cdn-cgi/challenge-platform/scripts/jsd/main.js | 70ms | 67ms | 1ms | 3rd |
A+Font Loading7 fonts (294 KB)PASS
Web fonts
7
294 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~86 KB and ~172 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
AHTTP Cachingmax-age=14400 (4 hours)PASS
public, max-age=14400
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 14400 | Cache for 4 hours |
Network Waterfall34 requests over 1737msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.nysenate.gov www.nysenate.gov | Other | 174ms | 11 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 82ms | 157 KB | 41% | $1/mo | Optional |
Unattributable Unattributable | Other | 76ms | 0 KB | — | $1/mo | Optional |
www.nysenate.gov www.nysenate.gov | Other | 70ms | 0 KB | — | $1/mo | Optional |
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