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.
4.55 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.03 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.31 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.155
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.98 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.
22.96 s
Page Load Progression
FPage Weight BudgetAction6.2 MB transferred, 36 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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction3494ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 721ms | 18ms | 0ms | 3rd |
| https://www.geocaching.com/play/bundles/lohp?v=kHsKCzo5KyezTAmR6roZlrVfiTR7mXqKh1iF5FoOihs1 | 700ms | 279ms | 389ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N3KS8V2 | 457ms | 373ms | 66ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WH86DS6J89&cx=c>m=4e64h1h1 | 414ms | 343ms | 66ms | 3rd |
| https://www.geocaching.com/play | 353ms | 10ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-GRQE2910DL&cx=c>m=4e64h1h1 | 293ms | 234ms | 57ms | 3rd |
| https://www.geocaching.com/play/app/dist/5609.c446c261e0f64313b59c.js | 269ms | 267ms | 1ms | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 200ms | 165ms | 31ms | 3rd |
| https://www.geocaching.com/play/app/dist/4254.00132854dc3d5de4d886.js | 88ms | 84ms | 2ms | 3rd |
FJS BundlesAction12 scripts, 2.0 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.geocaching.com/play/bundles/lohp?v=kHsKCzo5KyezTAmR6roZlrVfiTR7mXqKh1iF5FoOihs1 | 2490 KB | 1838 KB (74%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-GRQE2910DL&cx=c>m=4e64h1h1 | 144 KB | 63 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WH86DS6J89&cx=c>m=4e64h1h1 | 161 KB | 59 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N3KS8V2 | 139 KB | 55 KB (39%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 37 KB (66%) | ✓ | 3rd |
| https://www.geocaching.com/play/app/dist/7029.f5556649571538f1018f.js | 28 KB | 21 KB (78%) | ✓ | 3rd |
| https://static.hotjar.com/c/hotjar-441815.js?sv=7 | 6 KB | — | ✓ | 3rd |
| https://www.geocaching.com/play/app/dist/5609.c446c261e0f64313b59c.js | 4 KB | — | ✓ | 3rd |
| https://www.geocaching.com/play/app/dist/9478.843c25fbb9cf900e665a.js | 16 KB | — | ✓ | 3rd |
| https://www.geocaching.com/play/app/dist/4254.00132854dc3d5de4d886.js | 6 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
FPage Weight InventoryAction36 resources · 6.2 MB · 2.0 MB savings availableFIX
~2.0 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 36 resources | 6.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction10 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
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 Loading1 fonts (35 KB)PASS
Web fonts
1
35 KB total
Render-blocking
0
of 1
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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall36 requests over 5905msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 721ms | 0 KB | — | $10/mo | Costly |
www.geocaching.com www.geocaching.com | Other | 700ms | 2490 KB | 74% | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 457ms | 139 KB | 39% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 414ms | 161 KB | 36% | $6/mo | Costly |
www.geocaching.com www.geocaching.com | Other | 353ms | 8 KB | — | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 293ms | 144 KB | 44% | $4/mo | Costly |
www.geocaching.com www.geocaching.com | Other | 269ms | 4 KB | — | $4/mo | Costly |
Hotjar script.hotjar.com | Session Replay | 200ms | 57 KB | 66% | $3/mo | Costly |
www.geocaching.com www.geocaching.com | Other | 88ms | 6 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 721ms and costs ~$10/month
- www.geocaching.com adds 700ms and costs ~$9/month
- Google Tag Manager adds 457ms and costs ~$6/month
- Google Tag Manager adds 414ms and costs ~$6/month
- www.geocaching.com adds 353ms and costs ~$5/month
- Google Tag Manager adds 293ms and costs ~$4/month
- www.geocaching.com adds 269ms and costs ~$4/month
- Hotjar adds 200ms and costs ~$3/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 721ms 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.geocaching.com takes 700ms 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
74% of www.geocaching.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
Google Tag Manager takes 457ms 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
Google Tag Manager takes 414ms 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.geocaching.com takes 353ms 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
Google Tag Manager takes 293ms 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.geocaching.com takes 269ms 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
Hotjar takes 200ms 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
66% of Hotjar'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