Performance
· 22 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.
1.99 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
27 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.004
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.16 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.
1.99 s
Page Load Progression
BJS Execution Cost663ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://startrekonline.info/ | 287ms | 1ms | 0ms | 1st |
| Unattributable | 144ms | 36ms | 0ms | 1st |
| https://startrekonline.info/chunk-BjV4vUOC.js | 128ms | 123ms | 0ms | 1st |
| https://startrekonline.info/main-2HNOKNKR.js | 103ms | 44ms | 1ms | 1st |
BJS Bundles47 scripts, 131 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://startrekonline.info/main-2HNOKNKR.js | 157 KB | 82 KB (52%) | ✓ | 1st |
| https://cdn.logr-in.com/logger-1.min.js | 127 KB | 50 KB (39%) | ✓ | 3rd |
| https://startrekonline.info/chunk-CM3NDfHy.js | 2 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-B4_yQIWO.js | 14 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-dviJlVTg.js | 4 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-Dl_D8U1X.js | 2 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-DpwSpq9Q.js | 2 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-BjV4vUOC.js | 9 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-qC9r9hsU.js | 21 KB | — | ✓ | 1st |
| https://startrekonline.info/chunk-BRqS-8ye.js | 2 KB | — | ✓ | 1st |
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
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
APage Weight Budget729 KB transferred, 69 requestsPASS
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
AThird-Party Impact29% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
AImage Optimization3 images, 0 KB saveablePASS
A+Font Loading2 fonts (40 KB)PASS
Web fonts
2
40 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 HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Document CompressionDocument response uses brotliPASS
AAsset Compression1 of 1 asset host still on gzipPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory69 resources · 729 KB · 131 KB savings availablePASS
~131.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 69 resources | 729.4 KiB | ||||||
AHTTP Cachingpublic, max-age=0, s-maxage=300PASS
public, max-age=0, s-maxage=300
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| s-maxage | 300 | CDN caches for 5 minutes |
Network Waterfall69 requests over 857msINFO
Image Optimization4 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
4
Total Size
0 KB