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.
1.20 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.55 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.15 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.010
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.79 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.
23.86 s
Page Load Progression
FPage Weight BudgetAction29.8 MB transferred, 137 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 ImpactAction95% third-party, 0 ms blockingFIX
FJS Execution CostAction10654ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://wistia.com/reno/_next/static/chunks/10r8z-.o_ze3t.js | 3081ms | 1796ms | 15ms | 1st |
| https://fast.wistia.com/assets/external/publicApi.js@0.6.10 | 1584ms | 1065ms | 161ms | 3rd |
| Unattributable | 1560ms | 133ms | 0ms | 3rd |
| https://wistia.com/ | 1214ms | 21ms | 6ms | 1st |
| https://wistia.com/reno/_next/static/chunks/03kvl~05zafda.js | 697ms | 574ms | 18ms | 1st |
| https://js.hubspot.com/analytics/1776804600000/120237.js | 541ms | 455ms | 9ms | 3rd |
| https://wistia.com/reno/_next/static/chunks/0g0nk4gu79vz0.js | 531ms | 526ms | 4ms | 1st |
| https://wistia.com/reno/_next/static/chunks/03cybjsx~5m0k.js | 357ms | 327ms | 16ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-8BXEJ8J25Y&cx=c>m=4e64k0h2 | 240ms | 184ms | 38ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WJT32MJ | 209ms | 164ms | 37ms | 3rd |
Showing top 10 of 17 scripts
FJS BundlesAction49 scripts, 756 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 (51%) | ✓ | 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=4e64k0h2 | 172 KB | 76 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8BXEJ8J25Y&cx=c>m=4e64k0h2 | 176 KB | 71 KB (40%) | ✓ | 3rd |
| https://fast.wistia.com/assets/external/publicApi.js@0.6.10 | 146 KB | 61 KB (42%) | ✓ | 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 InventoryAction137 resources · 29.8 MB · 756 KB savings availableFIX
~756.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 137 resources | 29.8 MiB | ||||||
CImage OptimizationAction29 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 Loading7 fonts (489 KB)PASS
Web fonts
7
489 KB total
Render-blocking
0
of 7
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
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 ~318 KB and ~636 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints21 hints, 0 missing preconnectsPASS
Current Resource Hints
21 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
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 Waterfall137 requests over 3363msINFO
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 | 1584ms | 146 KB | 42% | €17/mo | Costly |
Unattributable Unattributable | Other | 1560ms | 0 KB | — | €17/mo | Costly |
js.hubspot.com js.hubspot.com | Other | 541ms | 44 KB | — | €6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 240ms | 176 KB | 40% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 209ms | 156 KB | 51% | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 195ms | 172 KB | 44% | €2/mo | Optional |
fast.wistia.net fast.wistia.net | Other | 84ms | 43 KB | 66% | €1/mo | Optional |
js.hubspot.com js.hubspot.com | Other | 77ms | 28 KB | — | €1/mo | Optional |
d2iok8515ir7ba.cloudfront.net d2iok8515ir7ba.cloudfront.net | Other | 58ms | 33 KB | — | €1/mo | Optional |
fast.wistia.net fast.wistia.net | Other | 51ms | 22 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- fast.wistia.com adds 1584ms and costs ~€17/month
- Unattributable adds 1560ms and costs ~€17/month
- js.hubspot.com adds 541ms and costs ~€6/month
- Google Tag Manager adds 240ms and costs ~€3/month
- Google Tag Manager adds 209ms and costs ~€2/month
43% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
fast.wistia.com takes 1584ms 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 1560ms 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
js.hubspot.com takes 541ms 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 240ms 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 209ms 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
66% of fast.wistia.net'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