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.
1.16 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.91 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
52 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.
1.75 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.
3.79 s
Page Load Progression
DPage Weight BudgetAction2.1 MB transferred, 92 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
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
FJS BundlesAction33 scripts, 606 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.googletagmanager.com/gtag/js?id=G-SVCRVP1CGL&cx=c&_slc=1 | 148 KB | 65 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KN2MB6XRQB&cx=c&_slc=1 | 148 KB | 63 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5KXJ326 | 141 KB | 63 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 147 KB | 62 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JLDSXSEGN2&cx=c>m=4e64k0h2 | 150 KB | 62 KB (41%) | ✓ | 3rd |
| https://www.ojp.gov/libraries/datatables.net/js/jquery.dataTables.js?v=1.x | 114 KB | 58 KB (51%) | ✗ | 3rd |
| https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D | 99 KB | 49 KB (50%) | ✓ | 3rd |
| https://cse.google.com/adsense/search/async-ads.js | 44 KB | 32 KB (73%) | ✓ | 3rd |
| https://www.ojp.gov/sites/g/files/xyckuh241/files/js/js_H7uUlDryb80zbi6F0CcdDtq0dQm5Un-embjmyYjkvSw.js?scope=footer&delta=12&language=en&theme=ojp&include=eJxdT-0OwyAIfCEjv_Y8hgJTWyuNH9kef65x2boQjjsuIQdmClrWCjiJpV6b7mbpsHRLQWiTYgZwbFpuTvZFmIUdaW6SG_T64OqQSAtHzfZeToMN6-pqwBKzhx9u5NlSzBtw6QcmO6Xxqj6Ja-jBD_jXFld8Xpe70fWA0e_pPhHnJ99Ep8vYRi1JKlzl6VbBQgHmdaryAm-4bLs | 33 KB | 24 KB (72%) | ✓ | 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 InventoryAction92 resources · 2.1 MB · 606 KB savings availableFIX
~605.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 92 resources | 2.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction34 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
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 Cost727ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 176ms | 5ms | 0ms | 3rd |
| https://www.ojp.gov/ | 107ms | 1ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L | 86ms | 69ms | 16ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JLDSXSEGN2&cx=c>m=4e64k0h2 | 81ms | 65ms | 16ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KN2MB6XRQB&cx=c&_slc=1 | 76ms | 60ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SVCRVP1CGL&cx=c&_slc=1 | 75ms | 60ms | 14ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5KXJ326 | 75ms | 59ms | 15ms | 3rd |
| https://www.ojp.gov/sites/g/files/xyckuh241/files/js/js_8U3SyVe7sz_u4nYgMnK-280-ZtLmzIBgkKutPqHICMc.js?scope=footer&delta=0&language=en&theme=ojp&include=eJxdT-0OwyAIfCEjv_Y8hgJTWyuNH9kef65x2boQjjsuIQdmClrWCjiJpV6b7mbpsHRLQWiTYgZwbFpuTvZFmIUdaW6SG_T64OqQSAtHzfZeToMN6-pqwBKzhx9u5NlSzBtw6QcmO6Xxqj6Ja-jBD_jXFld8Xpe70fWA0e_pPhHnJ99Ep8vYRi1JKlzl6VbBQgHmdaryAm-4bLs | 52ms | 46ms | 3ms | 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 Loading6 fonts (262 KB)PASS
Web fonts
6
262 KB total
Render-blocking
0
of 6
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 Waterfall92 requests over 3407msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 176ms | 0 KB | — | $2/mo | Optional |
www.ojp.gov www.ojp.gov | Other | 107ms | 11 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 86ms | 147 KB | 42% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 81ms | 150 KB | 41% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 76ms | 148 KB | 42% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 75ms | 148 KB | 44% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 75ms | 141 KB | 45% | $1/mo | Optional |
www.ojp.gov www.ojp.gov | Other | 52ms | 34 KB | 64% | $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
64% of www.ojp.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