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.
7.46 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
26.22 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
245 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.
11.01 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.
26.81 s
Page Load Progression
FPage Weight BudgetAction15.8 MB transferred, 144 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 CostAction2810ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 797ms | 62ms | 0ms | 3rd |
| https://www.esri.com/en-us/home | 539ms | 18ms | 2ms | 3rd |
| https://assets.adobedtm.com/2d251f50426c/e52f833be42a/launch-EN26af1ee4ef084984926fd80d1cb93835.min.js | 519ms | 395ms | 100ms | 3rd |
| https://webapps-cdn.esri.com/CDN/components/global-nav/js/gn.js | 397ms | 282ms | 29ms | 3rd |
| https://www.esri.com/etc.clientlibs/esri-sites/clientlibs/clientlib-dependencies.js | 161ms | 103ms | 28ms | 3rd |
| https://www.esri.com/etc.clientlibs/esri-sites/clientlibs/components.js | 132ms | 86ms | 24ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 89ms | 65ms | 24ms | 3rd |
| https://d.adroll.com/consent/check/BZWFT5BDTVHVVMRJGKQ6GL?pv=17548030303.679012&arrfrr=https%3A%2F%2Fwww.esri.com%2Fen-us%2Fhome&_s=29bc05eb4e2911c97fcac35e390ce4a0&_b=2 | 68ms | 60ms | 0ms | 3rd |
| https://js.arcgis.com/calcite-components/1.8.0/p-5f56ab0e.js | 57ms | 33ms | 0ms | 3rd |
| https://snap.licdn.com/li.lms-analytics/insight.min.js | 50ms | 42ms | 5ms | 3rd |
FJS BundlesAction66 scripts, 393 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://assets.adobedtm.com/2d251f50426c/e52f833be42a/launch-EN26af1ee4ef084984926fd80d1cb93835.min.js | 277 KB | 86 KB (31%) | ✓ | 3rd |
| https://js-cdn.dynatrace.com/jstag/16294a69b33/ruxitagent_A2QSVfhqru_10223210811140219.js | 88 KB | 77 KB (88%) | ✓ | 3rd |
| https://www.esri.com/etc.clientlibs/esri-sites/clientlibs/clientlib-dependencies.js | 83 KB | 51 KB (62%) | ✗ | 3rd |
| https://cdn.mouseflow.com/projects/3eb3135f-f8a5-4a4a-b8bd-122bc5d300b0.js | 65 KB | 48 KB (74%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 47 KB (49%) | ✓ | 3rd |
| https://webapps-cdn.esri.com/CDN/components/global-nav/js/gn.js | 114 KB | 46 KB (40%) | ✓ | 3rd |
| https://www.esri.com/etc.clientlibs/esri-sites/clientlibs/components.js | 52 KB | 38 KB (72%) | ✗ | 3rd |
| https://js.arcgis.com/calcite-components/1.8.0/p-349ad3f8.js | 1 KB | — | ✓ | 3rd |
| https://assets.adobedtm.com/2d251f50426c/e52f833be42a/6c80b68f8aa6/RC5d05f8a3d1df43739af43bb235ec01d2-source.min.js | 1 KB | — | ✓ | 3rd |
| https://webapps-cdn.esri.com/CDN/packages/instant.page/instantpage.min.js | 2 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
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 InventoryAction144 resources · 15.8 MB · 393 KB savings availableFIX
~393.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 144 resources | 15.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization30 images, 0 KB saveableREVIEW
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 (43 KB)PASS
Web fonts
2
43 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 Hints13 hints, 0 missing preconnectsPASS
Current Resource Hints
13 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall144 requests over 4013msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 797ms | 0 KB | — | $11/mo | Costly |
www.esri.com www.esri.com | Other | 539ms | 11 KB | — | $7/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 519ms | 277 KB | 31% | $7/mo | Costly |
webapps-cdn.esri.com webapps-cdn.esri.com | Other | 397ms | 114 KB | 40% | $5/mo | Costly |
www.esri.com www.esri.com | Other | 161ms | 83 KB | 62% | $2/mo | Optional |
www.esri.com www.esri.com | Other | 132ms | 52 KB | 72% | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 89ms | 97 KB | 49% | $1/mo | Optional |
d.adroll.com d.adroll.com | Other | 68ms | 1 KB | — | $1/mo | Optional |
js.arcgis.com js.arcgis.com | Other | 57ms | 6 KB | — | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 50ms | 19 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 797ms and costs ~$11/month
- www.esri.com adds 539ms and costs ~$7/month
- assets.adobedtm.com adds 519ms and costs ~$7/month
- webapps-cdn.esri.com adds 397ms and costs ~$5/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 797ms 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.esri.com takes 539ms 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
assets.adobedtm.com takes 519ms 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
webapps-cdn.esri.com takes 397ms 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
62% of www.esri.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
72% of www.esri.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