Performance
· 23 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.
1.12 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.78 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
22 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.035
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.73 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.
2.93 s
Page Load Progression
FPage Weight BudgetAction3.8 MB transferred, 45 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
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
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
FJS BundlesAction7 scripts, 971 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.ed.gov/sites/ed/files/js/js_Wj2Sq2NoiwFGbdEFsMziHOlziEFZW7S4g8aWcqOQ5oQ.js?scope=footer&delta=0&language=en&theme=edgov&include=eJx1jlGOgzAMRC-U1EeKTDKlFoZEsYH29gWW3b_9sZ498szYxxwzDWwIq-3F0on07Dxjr30KKGPdaNQ6sAa8XWWZqPS1sT7uNWyC3eiaj7mWVXG8pcLOY5dCJzgPCku5dtyWR47k2HhEXGpBkOXkhTf6o2Dgnl-JmyReveY6N4WD_rmfqS9oQyeU-EPBxLFLQWJF98Nc_G7wq8RLiYPWPH0BgYlp4w | 1266 KB | 720 KB (59%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-TTBYENS3X0 | 168 KB | 116 KB (69%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-TTBYENS3X0&cx=c>m=4e6ad1 | 167 KB | 68 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 162 KB | 66 KB (41%) | ✓ | 3rd |
| https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=ED&pga4=G-TTBYENS3X0&cto=6&subagency=OFO | 9 KB | — | ✓ | 3rd |
| https://www.clarity.ms/tag/kqemjo0aad | 1 KB | — | ✓ | 3rd |
| https://scripts.clarity.ms/0.8.72-beta/clarity.js | 25 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 InventoryAction45 resources · 3.8 MB · 971 KB savings availableFIX
~970.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 45 resources | 3.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction19 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
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
BJS Execution Cost667ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.ed.gov/sites/ed/files/js/js_Wj2Sq2NoiwFGbdEFsMziHOlziEFZW7S4g8aWcqOQ5oQ.js?scope=footer&delta=0&language=en&theme=edgov&include=eJx1jlGOgzAMRC-U1EeKTDKlFoZEsYH29gWW3b_9sZ498szYxxwzDWwIq-3F0on07Dxjr30KKGPdaNQ6sAa8XWWZqPS1sT7uNWyC3eiaj7mWVXG8pcLOY5dCJzgPCku5dtyWR47k2HhEXGpBkOXkhTf6o2Dgnl-JmyReveY6N4WD_rmfqS9oQyeU-EPBxLFLQWJF98Nc_G7wq8RLiYPWPH0BgYlp4w | 213ms | 125ms | 64ms | 1st |
| Unattributable | 129ms | 7ms | 0ms | 1st |
| https://www.ed.gov/laws-and-policy/hearings-and-appeals/hearings-and-appeals-secretary-decisions | 110ms | 4ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 81ms | 67ms | 8ms | 3rd |
| https://scripts.clarity.ms/0.8.72-beta/clarity.js | 70ms | 47ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-TTBYENS3X0&cx=c>m=4e6ad1 | 64ms | 53ms | 10ms | 3rd |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CDocument CompressionActionDocument response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact14% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading9 fonts (672 KB)PASS
Web fonts
9
672 KB total
Render-blocking
0
of 9
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- 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 ~494 KB and ~988 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall45 requests over 2722msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 81ms | 162 KB | 41% | $1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 70ms | 25 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 64ms | 167 KB | 41% | $1/mo | Optional |
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-09-16 — 2026-10-13)
LCP (p75)
1657 ms
89% good
INP (p75)
71 ms
95% good
CLS (p75)
0.010
96% good
FCP (p75)
1605 ms
TTFB (p75)
889 ms