https://ayvion.io
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
83
GRADE
B
FIX
3
REVIEW
6
PASS
14
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
39
96
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
5.60 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.71 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
908 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.
6.18 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.
11.19 s
Page Load Progression
576 ms 1.2 s 1.7 s
2.3 s
2.9 s
3.5 s 4.0 s
4.6 sChecks
2614 PASS 6 REVIEW 3 FIX
FJS Execution CostAction4834ms total JS executionFIX
JS Execution Cost
Action4834ms total JS execution
4834ms total JS execution
Warning::
https://ayvion.io/assets/index-BT1UAV__.js: 1336ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Q65L...: 859ms CPU time
Warning::
https://ayvion.io/en: 664ms CPU time
Warning::
https://connect.facebook.net/en_US/fbevents.js: 522ms CPU time
Warning::
Unattributable: 502ms CPU time
Info::
Third-party scripts: 1847ms (38% of total)
Main Thread Breakdown
Script Evaluation 46% Other 18% Style & Layout 15% Script Parsing & Compilation 15% Rendering 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://ayvion.io/assets/index-BT1UAV__.js | 1336ms | 1097ms | 116ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-Q65LZ4BNEM | 859ms | 351ms | 189ms | 3rd |
| https://ayvion.io/en | 664ms | 7ms | 3ms | 1st |
| https://connect.facebook.net/en_US/fbevents.js | 522ms | 378ms | 95ms | 3rd |
| Unattributable | 502ms | 9ms | 0ms | 1st |
| https://ayvion.io/assets/Footer-CpDGVNXp.js | 425ms | 98ms | 83ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-MP5ZFTFH | 278ms | 139ms | 139ms | 3rd |
| https://connect.facebook.net/signals/config/808298411928014?v=2.9.390&r=stable&domain=ayvion.io&im=1&hme=a767ae4c6a92a40ee4d7e358a937ad845c8bdb98a3bbe3412069dded3a7be57d&ex_m=115%2C221%2C166%2C26%2C80%2C81%2C158%2C76%2C75%2C11%2C176%2C100%2C20%2C150%2C138%2C45%2C83%2C88%2C146%2C171%2C178%2C31%2C17%2C30%2C18%2C32%2C33%2C34%2C36%2C54%2C159%2C85%2C123%2C22%2C24%2C50%2C46%2C48%2C47%2C93%2C102%2C106%2C121%2C157%2C160%2C52%2C122%2C28%2C25%2C130%2C77%2C42%2C162%2C161%2C163%2C154%2C152%2C29%2C41%2C65%2C120%2C173%2C78%2C21%2C125%2C91%2C74%2C23%2C95%2C96%2C127%2C94%2C148%2C147%2C151%2C107%2C172%2C175%2C40%2C55%2C124%2C53%2C8%2C4%2C5%2C7%2C6%2C3%2C101%2C112%2C179%2C188%2C235%2C82%2C248%2C247%2C246%2C14%2C27%2C39%2C61%2C114%2C67%2C10%2C71%2C108%2C109%2C110%2C116%2C141%2C37%2C35%2C143%2C144%2C145%2C140%2C139%2C167%2C84%2C170%2C168%2C169%2C56%2C66%2C134%2C19%2C174%2C51%2C297%2C298%2C299%2C296%2C312%2C335%2C228%2C217%2C68%2C218%2C216%2C338%2C329%2C58%2C229%2C118%2C142%2C90%2C132%2C60%2C131%2C137%2C136%2C64%2C72%2C70%2C164%2C86%2C87%2C126%2C43%2C38%2C59%2C62%2C111%2C177%2C1%2C135%2C16%2C133%2C12%2C2%2C63%2C103%2C15%2C73%2C69%2C129%2C99%2C98%2C181%2C182%2C104%2C105%2C9%2C113%2C180%2C57%2C155%2C97%2C89%2C79%2C128%2C117%2C49%2C156%2C0%2C92%2C149%2C153%2C165%2C44%2C119%2C13%2C183 | 188ms | 146ms | 42ms | 3rd |
| https://ayvion.io/~flock.js | 59ms | 40ms | 6ms | 1st |
FJS BundlesAction32 scripts, 665 KB unusedFIX
JS Bundles
Action32 scripts, 665 KB unused
32 scripts, 665 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MP5...: 75 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MP5...: 75 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Q65L...: 72 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Q65L...: 72 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://ayvion.io/assets/index-BT1UAV__.js: 71 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 665 KB
665 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-MP5ZFTFH | 115 KB | 75 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MP5ZFTFH | 0 KB | 75 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-Q65LZ4BNEM | 0 KB | 72 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-Q65LZ4BNEM | 168 KB | 72 KB (43%) | ✓ | 3rd |
| https://ayvion.io/assets/index-BT1UAV__.js | 0 KB | 71 KB (34%) | ✓ | 1st |
| https://ayvion.io/assets/index-BT1UAV__.js | 210 KB | 71 KB (34%) | ✓ | 1st |
| https://ayvion.io/assets/client-CG6fWpyt.js | 54 KB | 52 KB (96%) | ✓ | 1st |
| https://ayvion.io/assets/client-CG6fWpyt.js | 0 KB | 52 KB (96%) | ✓ | 1st |
| https://connect.facebook.net/en_US/fbevents.js | 0 KB | 37 KB (35%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 106 KB | 37 KB (35%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
DPage Weight InventoryAction52 resources · 1.3 MB · 665 KB savings availableFIX
Page Weight Inventory
Action52 resources · 1.3 MB · 665 KB savings available
52 resources · 1.3 MB · 665 KB savings available
Warning::
Page weight 1.3 MB exceeds 1 MB target by 286 KB
Got: 1.3 MB Expected: ≤ 1 MB
Info::
~665 KB of savings available
Warning::
19 third-party resources (47% of weight)
Info::
1 resources over 200KB
52 resources · 1.3 MiB · 19 third-party 285.6 KiB over 1MB target
JavaScript 78% · 1019.0 KiB
Image 10% · 125.1 KiB
Font 8% · 101.1 KiB
Document 3% · 42.2 KiB
CSS 2% · 21.4 KiB
Other 0% · 907 B
~665.1 KiB of savings available
Remove unused JavaScript: 665.1 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 52 resources | 1.3 MiB | ||||||
BPage Weight Budget1.3 MB transferred, 52 requestsREVIEW
Page Weight Budget
1.3 MB transferred, 52 requests
1.3 MB transferred, 52 requests
Info::
Page weighs 7.1 MB (1.3 MB transferred)
Warning::
JavaScript is 1019 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1019 KB
Info::
52 HTTP requests
Info::
Estimated 0.27 g CO2 per page load
1.3 MB transferred
52 requests
0.27 g CO2 per page load
JavaScript 1019.0 KiB 78%
Images 122.2 KiB 9%
Fonts 101.1 KiB 8%
HTML 42.2 KiB 3%
CSS 21.4 KiB 2%
Other 2.8 KiB 0%
Other 760 B 0%
Other 147 B 0%
0 2.4 MB 4.9 MB
Under budget
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
BThird-Party Impact47% third-party, 0 ms blockingREVIEW
Third-Party Impact
47% third-party, 0 ms blocking
47% third-party, 0 ms blocking
Info::
Third-party code accounts for 47% of page weight (611.4 KiB of 1.3 MiB)
Info::
Third-party blocking time is low (0 ms)
53%
47%
First-party Third-party
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
Main response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
BHTTP Cachingno-cache, must-revalidate, max-age=0REVIEW
HTTP Caching
no-cache, must-revalidate, max-age=0
no-cache, must-revalidate, max-age=0
Info::
Cache-Control header is set
Got: no-cache, must-revalidate, max-age=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
no-cache, must-revalidate, max-age=0
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
| max-age | 0 | Cache for 0 seconds |
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
AImage Optimization2 images, 0 KB saveablePASS
Image Optimization
2 images, 0 KB saveable
2 images, 0 KB saveable
Warning::
https://ayvion.io/__l5e/assets-v1/f24d8b1c-2a08-48... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 0 KB
0 oversized -0 KB
1 legacy format
1 missing dimensions CLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Font Loading6 fonts (101 KB)PASS
Font Loading
6 fonts (101 KB)
6 fonts (101 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
101 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
NGSwv5HMAFg6IuGlBNMjxLs... woff2 swap
Size 44 KB
Load time 51 ms
Start 478 ms
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 44 ms
Start 478 ms
Risk FOUT — text flashes from fallback to web font
-F63fjptAgt5VM-kVkqdyU8... woff2 swap
Size 10 KB
Load time 43 ms
Start 478 ms
Risk FOUT — text flashes from fallback to web font
-F63fjptAgt5VM-kVkqdyU8... woff2 swap
Size 0 KB
Load time 0 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 0 KB
Load time 0 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
NGSwv5HMAFg6IuGlBNMjxLs... woff2 swap
Size 0 KB
Load time 0 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
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
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource Hints3 hints, 0 missing preconnectsPASS
Resource Hints
3 hints, 0 missing preconnects
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)
Current Resource Hints
preconnect 2
preload 1
dns-prefetch—
prefetch—
3 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Main HTML Cache-ControlMain HTML uses no-cache -- safe revalidate-on-request policyPASS
Main HTML Cache-Control
Main HTML uses no-cache -- safe revalidate-on-request policy
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache, must-revalidate, max-age=0
AServer Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: gzip` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
Total JS execution time is 4.8 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
CSS Performance Depth
No CSS performance depth issues detected
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall52 requests over 3395msINFO
Network Waterfall
52 requests over 3395ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
38% of JavaScript execution is third-party
First-party Third-party 1847ms · 120KB · $32/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 859ms | 0 KB | 43% | $15/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 522ms | 0 KB | 35% | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 278ms | 0 KB | 66% | $5/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 188ms | 120 KB | — | $3/mo | Optional |
Google Tag Manager
Tag Manager
Execution 859ms
Transfer 0 KB
Unused 43%
Monthly Cost $15/mo
Facebook Pixel
Advertising
Execution 522ms
Transfer 0 KB
Unused 35%
Monthly Cost $9/mo
Google Tag Manager
Tag Manager
Execution 278ms
Transfer 0 KB
Unused 66%
Monthly Cost $5/mo
Facebook Pixel
Advertising
Execution 188ms
Transfer 120 KB
Monthly Cost $3/mo
These scripts may cost more than they're worth
- Google Tag Manager adds 859ms and costs ~$15/month
- Facebook Pixel adds 522ms and costs ~$9/month
- Google Tag Manager adds 278ms and costs ~$5/month
Google Tag Manager takes 859ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Facebook Pixel takes 522ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 278ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
66% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization2 images, 244 KB total, 119 KB wastedINFO
Image Optimization
2 images, 244 KB total, 119 KB wasted
Image Optimization Audit
Total Images
2
Total Size
244 KB
Oversized
1
Wasted
119 KB
1 missing dimensions 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.