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.
598 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.74 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
308 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.319
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.48 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.
5.01 s
Page Load Progression
FPage Weight BudgetAction3.7 MB transferred, 152 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
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 ImpactAction90% third-party, 0 ms blockingFIX
DJS Execution CostAction2954ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://tailscale.com/ | 682ms | 26ms | 15ms | 1st |
| Unattributable | 625ms | 110ms | 0ms | 3rd |
| https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js | 293ms | 218ms | 63ms | 3rd |
| https://wwwv2.tailscale.com/_next/static/chunks/2236-bff62fec1011f6ab.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 235ms | 212ms | 12ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-686222781&cx=c>m=4e64h1 | 164ms | 142ms | 21ms | 3rd |
| https://wwwv2.tailscale.com/_next/static/chunks/3911f9e1-08fd5a87a04ceff3.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 158ms | 109ms | 6ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 157ms | 114ms | 4ms | 3rd |
| https://wwwv2.tailscale.com/_next/static/chunks/webpack-ac2c830a49d6ad4a.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 147ms | 128ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JY69R9X5MQ | 130ms | 107ms | 21ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PNPKKT7F>m_cookies_win=x | 126ms | 88ms | 23ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction56 scripts, 786 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://wwwv2.tailscale.com/_next/static/chunks/40412b2d-a0a3b2ac210ca682.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 212 KB | 212 KB (100%) | ✓ | 3rd |
| https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js | 259 KB | 114 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JY69R9X5MQ&cx=c>m=4e64h1 | 178 KB | 113 KB (64%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JY69R9X5MQ | 178 KB | 69 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PNPKKT7F>m_cookies_win=x | 152 KB | 66 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-686222781&cx=c>m=4e64h1 | 175 KB | 62 KB (36%) | ✓ | 3rd |
| https://wwwv2.tailscale.com/_next/static/chunks/4411-003c349232b9774d.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 55 KB | 42 KB (75%) | ✓ | 3rd |
| https://wwwv2.tailscale.com/_next/static/chunks/626-bc50847d09da2ca3.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 44 KB | 38 KB (89%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 38 KB (67%) | ✓ | 3rd |
| https://wwwv2.tailscale.com/_next/static/chunks/2236-bff62fec1011f6ab.js?dpl=dpl_4njLr3ZoSZFgTaU7HMU64PCYJy3E | 64 KB | 32 KB (51%) | ✓ | 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 InventoryAction152 resources · 3.7 MB · 786 KB savings availableFIX
~786.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 152 resources | 3.7 MiB | ||||||
BImage Optimization25 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
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 Loading4 fonts (415 KB)PASS
Web fonts
4
415 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~167 KB and ~334 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall152 requests over 5236msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 625ms | 0 KB | — | €7/mo | Costly |
cdn.ketchjs.com cdn.ketchjs.com | Other | 293ms | 259 KB | 44% | €3/mo | Costly |
wwwv2.tailscale.com wwwv2.tailscale.com | Other | 235ms | 64 KB | 51% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 164ms | 175 KB | 36% | €2/mo | Optional |
wwwv2.tailscale.com wwwv2.tailscale.com | Other | 158ms | 56 KB | — | €2/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 157ms | 26 KB | — | €2/mo | Optional |
wwwv2.tailscale.com wwwv2.tailscale.com | Other | 147ms | 3 KB | — | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 130ms | 178 KB | 39% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 126ms | 152 KB | 43% | €1/mo | Optional |
cdn.keyplay.io cdn.keyplay.io | Other | 103ms | 21 KB | — | €1/mo | Optional |
wwwv2.tailscale.com wwwv2.tailscale.com | Other | 76ms | 47 KB | — | €1/mo | Optional |
Hotjar script.hotjar.com | Session Replay | 59ms | 57 KB | 67% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 625ms and costs ~€7/month
- cdn.ketchjs.com adds 293ms and costs ~€3/month
- wwwv2.tailscale.com adds 235ms and costs ~€3/month
77% 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 625ms 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
cdn.ketchjs.com 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
wwwv2.tailscale.com takes 235ms 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
51% of wwwv2.tailscale.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
67% 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