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.
1.52 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.04 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 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.
1.52 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.
2.04 s
Page Load Progression
DPage Weight BudgetAction2.2 MB transferred, 138 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
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 BundlesAction108 scripts, 304 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://videojs.org/_astro/HeroVideo.DVykyWlf.js | 164 KB | 91 KB (55%) | ✓ | 3rd |
| https://videojs.org/_astro/Search.iSSCo3v4.js | 108 KB | 85 KB (79%) | ✓ | 3rd |
| https://videojs.org/_astro/page.hlVgXjX6.js | 82 KB | 71 KB (87%) | ✓ | 3rd |
| https://videojs.org/ph/static/array.js | 59 KB | 35 KB (59%) | ✓ | 3rd |
| https://videojs.org/_astro/client.ztr1rcVY.js | 55 KB | 23 KB (41%) | ✓ | 3rd |
| https://videojs.org/_astro/client.SWCkAu44.js | 1 KB | — | ✓ | 3rd |
| https://videojs.org/_astro/compiler-runtime.CmTUt5DS.js | 1 KB | — | ✓ | 3rd |
| https://videojs.org/_astro/index.CXRtOFEP.js | 3 KB | — | ✓ | 3rd |
| https://videojs.org/_astro/index.CzfK5GC_.js | 1 KB | — | ✓ | 3rd |
| https://videojs.org/_astro/index.0oia47F0.js | 1 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 InventoryAction138 resources · 2.2 MB · 304 KB savings availableFIX
~304.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 138 resources | 2.2 MiB | ||||||
BImage Optimization5 images, 0 KB saveableREVIEW
BJS Execution Cost883ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://videojs.org/ | 512ms | 11ms | 1ms | 3rd |
| https://videojs.org/_astro/client.ztr1rcVY.js | 165ms | 121ms | 0ms | 3rd |
| Unattributable | 140ms | 8ms | 0ms | 3rd |
| https://videojs.org/_astro/HeroVideo.DVykyWlf.js | 66ms | 48ms | 1ms | 3rd |
BHTTP Cachingpublic,max-age=0,must-revalidateREVIEW
public,max-age=0,must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (132 KB)PASS
Web fonts
6
132 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
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
Network Waterfall138 requests over 1831msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
videojs.org videojs.org | Other | 512ms | 113 KB | — | €6/mo | Costly |
videojs.org videojs.org | Other | 165ms | 55 KB | 41% | €2/mo | Optional |
Unattributable Unattributable | Other | 140ms | 0 KB | — | €2/mo | Optional |
videojs.org videojs.org | Other | 66ms | 164 KB | 55% | €1/mo | Optional |
These scripts may cost more than they're worth
- videojs.org adds 512ms and costs ~€6/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
videojs.org takes 512ms 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
55% of videojs.org'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