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.
330 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.19 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
136 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.009
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.81 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.
4.61 s
Page Load Progression
FPage Weight BudgetAction25.7 MB transferred, 172 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
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 ImpactAction93% third-party, 0 ms blockingFIX
DJS Execution CostAction2854ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://wistia.com/reno/_next/static/chunks/10r8z-.o_ze3t.js | 890ms | 479ms | 4ms | 1st |
| https://fast.wistia.com/assets/external/publicApi.js@0.6.10 | 433ms | 310ms | 46ms | 3rd |
| https://wistia.com/ | 351ms | 3ms | 2ms | 1st |
| Unattributable | 341ms | 29ms | 0ms | 3rd |
| https://wistia.com/reno/_next/static/chunks/0vbbbhj~7n.pv.js | 260ms | 218ms | 4ms | 1st |
| https://wistia.com/reno/_next/static/chunks/03kvl~05zafda.js | 216ms | 180ms | 5ms | 1st |
| https://js.hubspot.com/analytics/1776804600000/120237.js | 122ms | 89ms | 7ms | 3rd |
| https://wistia.com/reno/_next/static/chunks/03cybjsx~5m0k.js | 109ms | 101ms | 5ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-8BXEJ8J25Y&cx=c>m=4e64h1 | 76ms | 62ms | 12ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WJT32MJ | 56ms | 45ms | 9ms | 3rd |
FJS BundlesAction51 scripts, 757 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://wistia.com/reno/_next/static/chunks/0uygllkd_dgv7.js | 218 KB | 150 KB (69%) | ✓ | 1st |
| https://wistia.com/reno/_next/static/chunks/0pnwf5p.0j221.js | 93 KB | 83 KB (89%) | ✓ | 1st |
| https://fast.wistia.net/assets/external/engines/hls_video.js@0.6.10 | 159 KB | 80 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WJT32MJ | 156 KB | 80 KB (51%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-GQR109DZ3Y&cx=c>m=4e64h1 | 173 KB | 78 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8BXEJ8J25Y&cx=c>m=4e64h1 | 176 KB | 70 KB (40%) | ✓ | 3rd |
| https://fast.wistia.com/assets/external/publicApi.js@0.6.10 | 146 KB | 60 KB (41%) | ✓ | 3rd |
| https://wistia.com/reno/_next/static/chunks/15bl41ks~4ezd.js | 56 KB | 43 KB (83%) | ✓ | 1st |
| https://wistia.com/reno/_next/static/chunks/10r8z-.o_ze3t.js | 57 KB | 35 KB (62%) | ✓ | 1st |
| https://fast.wistia.net/assets/external/captions.js@0.6.10 | 43 KB | 28 KB (66%) | ✓ | 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 InventoryAction172 resources · 25.7 MB · 757 KB savings availableFIX
~756.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 172 resources | 25.7 MiB | ||||||
CImage OptimizationAction28 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
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
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
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
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
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
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
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
BHTTP Cachings-maxage=31536000REVIEW
s-maxage=31536000
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 31536000 | CDN caches for 52 weeks |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (510 KB)PASS
Web fonts
8
510 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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 ~324 KB and ~648 ms
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: Axis12 Ltd
Network Waterfall172 requests over 4327msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
fast.wistia.com fast.wistia.com | Other | 433ms | 146 KB | 41% | €5/mo | Costly |
Unattributable Unattributable | Other | 341ms | 0 KB | — | €4/mo | Costly |
js.hubspot.com js.hubspot.com | Other | 122ms | 44 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 76ms | 176 KB | 40% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 56ms | 156 KB | 51% | €1/mo | Optional |
These scripts may cost more than they're worth
- fast.wistia.com adds 433ms and costs ~€5/month
- Unattributable adds 341ms and costs ~€4/month
fast.wistia.com takes 433ms 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
Unattributable takes 341ms 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 Google Tag Manager'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