Performance
· 24 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.
718 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.76 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
157 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.057
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.22 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.
4.65 s
Page Load Progression
FPage Weight BudgetAction45.7 MB transferred, 154 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
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
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 ImpactAction98% third-party, 0 ms blockingFIX
FJS BundlesAction68 scripts, 846 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.planetfitness.mx/gyms/pfx/static/js/main.3fe8e074.js | 468 KB | 218 KB (47%) | ✓ | 1st |
| https://cdn.cookielaw.org/scripttemplates/202609.2.0/otBannerSdk.js | 147 KB | 80 KB (55%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-NPH7H94TXH&cx=c>m=4e6as1 | 181 KB | 74 KB (41%) | ✓ | 3rd |
| https://www.planetfitness.mx/_next/static/chunks/7530-f8f33d3cd9d1d840.js | 91 KB | 70 KB (77%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-GXZM5G6K8N&cx=c>m=4e6as1 | 164 KB | 66 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-10819236809&cx=c>m=4e6as1 | 167 KB | 63 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T7FHLJW | 183 KB | 62 KB (34%) | ✓ | 3rd |
| https://connect.facebook.net/signals/config/1074697796675001?v=2.9.433&r=stable&domain=www.planetfitness.mx&hme=4453c87d489b6902031c012cadd2731893cd69feb64fe8a61b339727247a7703&ex_m=118%2C242%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C211%2C263%2C84%2C283%2C282%2C281%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C333%2C334%2C335%2C332%2C349%2C371%2C256%2C238%2C70%2C239%2C237%2C374%2C365%2C59%2C257%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 148 KB | 48 KB (33%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 112 KB | 40 KB (36%) | ✓ | 3rd |
| https://script.hotjar.com/modules.e85a87e594b0aace33cf.js | 57 KB | 38 KB (67%) | ✓ | 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 InventoryAction154 resources · 45.7 MB · 846 KB savings availableFIX
~846.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 154 resources | 45.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction32 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
CJS Execution CostAction1867ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 545ms | 39ms | 0ms | 1st |
| https://www.planetfitness.mx/gyms/pfx/static/js/main.3fe8e074.js | 323ms | 234ms | 83ms | 1st |
| https://www.planetfitness.mx/ | 190ms | 67ms | 2ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-T7FHLJW | 118ms | 103ms | 12ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-10819236809&cx=c>m=4e6as1 | 111ms | 85ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-GXZM5G6K8N&cx=c>m=4e6as1 | 101ms | 88ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-NPH7H94TXH&cx=c>m=4e6as1 | 97ms | 82ms | 14ms | 3rd |
| https://script.hotjar.com/modules.e85a87e594b0aace33cf.js | 93ms | 77ms | 5ms | 3rd |
| https://connect.facebook.net/signals/config/1074697796675001?v=2.9.433&r=stable&domain=www.planetfitness.mx&hme=4453c87d489b6902031c012cadd2731893cd69feb64fe8a61b339727247a7703&ex_m=118%2C242%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C211%2C263%2C84%2C283%2C282%2C281%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C333%2C334%2C335%2C332%2C349%2C371%2C256%2C238%2C70%2C239%2C237%2C374%2C365%2C59%2C257%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 85ms | 73ms | 12ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202609.2.0/otBannerSdk.js | 70ms | 47ms | 13ms | 3rd |
Showing top 10 of 12 scripts
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (191 KB)PASS
Web fonts
7
191 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
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 ~5 KB and ~10 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server-Timing Observability1 Server-Timing entries advertisedPASS
AServer Response Intelligence2 server-response signal(s) detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall154 requests over 30667msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 118ms | 183 KB | 34% | MX$9/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 111ms | 167 KB | 38% | MX$8/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 101ms | 164 KB | 40% | MX$7/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 97ms | 181 KB | 41% | MX$7/mo | Optional |
Hotjar script.hotjar.com | Session Replay | 93ms | 57 KB | 67% | MX$7/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 85ms | 148 KB | 33% | MX$6/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 70ms | 147 KB | 55% | MX$5/mo | Essential |
d22xmn10vbouk4.cloudfront.net d22xmn10vbouk4.cloudfront.net | Other | 69ms | 27 KB | — | MX$5/mo | Optional |
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
55% of OneTrust'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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-04 — 2026-10-31)
LCP (p75)
1581 ms
91% good
INP (p75)
129 ms
92% good
CLS (p75)
0.080
75% good
FCP (p75)
1424 ms
TTFB (p75)
883 ms
Image Optimization1 images, 6 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
1
Total Size
6 KB