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Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
5
REVIEW
6
PASS
13
INFO
3

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

43
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.11 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

29.97 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

2.18 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.062

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.44 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.

29.97 s

Page Load Progression

639 ms
1.3 s
1.9 s
2.6 s
3.2 s
3.8 s
4.5 s
5.1 s
Checks
27
13 PASS 6 REVIEW 5 FIX
F
Page Weight Budget
Action
7.7 MB transferred, 122 requests
FIX
7.7 MB transferred, 122 requests
Critical::
Page weighs 15.6 MB (7.7 MB transferred)
Warning::
Images are 3.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.7 MB
Info::
Fonts are 550 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 550 KB
Warning::
122 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.6 g CO2 per page load
7.7 MB / 2.4 MB budget
7.7 MB transferred
122 requests
1.6 g CO2 per page load
Images 3.7 MiB 47%
Other 3.3 MiB 43%
Fonts 549.7 KiB 7%
JavaScript 145.1 KiB 2%
CSS 69.0 KiB 1%
HTML 1.2 KiB 0%
Other 317 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

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.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (7.7 MiB of 7.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5730ms total JS execution
FIX
5730ms total JS execution
Warning::
Unattributable: 2795ms CPU time
Warning::
https://www.onixlabs.io/: 1548ms CPU time
Warning::
https://www.onixlabs.io/_framework/dotnet.native.n...: 1321ms CPU time
Info::
https://www.onixlabs.io/_framework/dotnet.js: 66ms CPU time
Warning::
Third-party scripts: 2935ms (51% of total)

Main Thread Breakdown

Script Evaluation 50% Other 41% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
Unattributable2795ms918ms0ms1st
https://www.onixlabs.io/1548ms624ms1ms3rd
https://www.onixlabs.io/_framework/dotnet.native.noby4tlk4d.js1321ms1248ms0ms3rd
https://www.onixlabs.io/_framework/dotnet.js66ms62ms0ms3rd
D
Page Weight Inventory
Action
122 resources · 7.7 MB · 43 KB savings available
FIX
122 resources · 7.7 MB · 43 KB savings available
Warning::
Page weight 7.7 MB exceeds 1 MB target by 6.7 MB
Got: 7.7 MB Expected: ≤ 1 MB
Warning::
121 third-party resources (100% of weight)
Info::
10 resources over 200KB
122 resources · 7.7 MiB · 121 third-party 6.7 MiB over 1MB target
Image 47% · 3.7 MiB
Other 43% · 3.3 MiB
Font 7% · 549.7 KiB
JavaScript 2% · 145.1 KiB
CSS 1% · 69.0 KiB
Document 0% · 1.5 KiB

~43.2 KiB of savings available

Remove unused JavaScript: 43.2 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
43 images, 0 KB saveable
REVIEW
43 images, 0 KB saveable
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/contributo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/marketing/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/contributo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/contributo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/contributo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/logo/logo-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/tech... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.onixlabs.io/onixlabs/images/icons/glas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
43 images 3.7 MB
0 oversized -0 KB
43 legacy format
32 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
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.
C
Document Compression
Action
Document response served uncompressed
REVIEW
Document response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
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.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
4 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
Warning::
Total JS execution time is 5.7 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+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
6 fonts (550 KB)
PASS
6 fonts (550 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

550 KB total

Render-blocking

0

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s FCP 2.1 s LCP 30.0 shttps://www.onixlabs.io/poppins/fonts/Poppins-Regular.ttfPoppins-Regular.ttf https://www.onixlabs.io/poppins/fonts/Poppins-Regular.ttf — 70.1 KiB — 165 ms — font-display: swaphttps://www.onixlabs.io/fontawesome/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://www.onixlabs.io/fontawesome/webfonts/fa-brands-400.woff2 — 116.2 KiB — 153 ms — font-display: swaphttps://www.onixlabs.io/poppins/fonts/Poppins-Bold.ttfPoppins-Bold.ttf https://www.onixlabs.io/poppins/fonts/Poppins-Bold.ttf — 69.2 KiB — 161 ms — font-display: swaphttps://www.onixlabs.io/poppins/fonts/Poppins-Light.ttfPoppins-Light.ttf https://www.onixlabs.io/poppins/fonts/Poppins-Light.ttf — 70.0 KiB — 174 ms — font-display: swaphttps://www.onixlabs.io/poppins/fonts/Poppins-Medium.ttfPoppins-Medium.ttf https://www.onixlabs.io/poppins/fonts/Poppins-Medium.ttf — 69.3 KiB — 166 ms — font-display: swaphttps://www.onixlabs.io/fontawesome/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.onixlabs.io/fontawesome/webfonts/fa-solid-900.woff2 — 154.8 KiB — 239 ms — font-display: swap
Poppins-Regular.ttf ttf swap
Size 70 KB
Load time 165 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-brands-400.woff2 woff2 swap
Size 116 KB
Load time 153 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Poppins-Bold.ttf ttf swap
Size 69 KB
Load time 161 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Poppins-Light.ttf ttf swap
Size 70 KB
Load time 174 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Poppins-Medium.ttf ttf swap
Size 69 KB
Load time 166 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-solid-900.woff2 woff2 swap
Size 155 KB
Load time 239 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • 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 ~219 KB and ~438 ms

A+
JS Bundles
7 scripts, 43 KB unused
PASS
7 scripts, 43 KB unused
Warning::
https://www.onixlabs.io/_framework/dotnet.native.n...: 22 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.onixlabs.io/_framework/dotnet.runtime....: 21 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 43 KB
43 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.onixlabs.io/_framework/dotnet.native.noby4tlk4d.js34 KB22 KB (64%)✓3rd
https://www.onixlabs.io/_framework/dotnet.runtime.9o45ky8ejm.js55 KB21 KB (39%)✓3rd
https://www.onixlabs.io/_framework/blazor.webassembly.js18 KB—✓3rd
https://www.onixlabs.io/bootstrap/js/bootstrap.bundle.min.js24 KB—✓3rd
https://www.onixlabs.io/onixlabs/scripts/navbar.js0 KB—✓3rd
https://www.onixlabs.io/onixlabs/scripts/theme.js1 KB—✓3rd
https://www.onixlabs.io/_framework/dotnet.js13 KB—✓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

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Asset Compression
1 of 1 asset host still on gzip
PASS
1 of 1 asset host still on gzip
Info::
www.onixlabs.io serves assets with gzip; brotli would be ~20% smaller (assets: 42)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
Got: www.onixlabs.io (image/svg+xml)
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
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 Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
9 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Fastly

Network Waterfall
122 requests over 2880ms
INFO
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— 200 — 244.8 KiB — 234 ms — h2https://www.onixlabs.io/onixlabs/images/contributors/matt.jpegwww.onixlabs.io/onixlabs/images/con... https://www.onixlabs.io/onixlabs/images/contributors/matt.jpeg — 200 — 70.2 KiB — 200 ms — h2https://www.onixlabs.io/onixlabs/images/contributors/laura.jpegwww.onixlabs.io/onixlabs/images/con... https://www.onixlabs.io/onixlabs/images/contributors/laura.jpeg — 200 — 99.9 KiB — 149 ms — h2https://www.onixlabs.io/onixlabs/images/contributors/adam.jpegwww.onixlabs.io/onixlabs/images/con... https://www.onixlabs.io/onixlabs/images/contributors/adam.jpeg — 200 — 79.9 KiB — 148 ms — h2https://www.onixlabs.io/onixlabs/images/contributors/ryan.jpegwww.onixlabs.io/onixlabs/images/con... https://www.onixlabs.io/onixlabs/images/contributors/ryan.jpeg — 200 — 75.5 KiB — 145 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
51% of JavaScript execution is third-party
First-party Third-party 2935ms · 48KB · $39/mo
www.onixlabs.io
Other
Costly
Execution 1548ms
Transfer 1 KB
Monthly Cost $21/mo
www.onixlabs.io
Other
Costly
Execution 1321ms
Transfer 34 KB
Unused 64%
Monthly Cost $18/mo
www.onixlabs.io
Other
Optional
Execution 66ms
Transfer 13 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.onixlabs.io adds 1548ms and costs ~$21/month
  • www.onixlabs.io adds 1321ms and costs ~$18/month

51% of JavaScript execution time comes from third-party scripts.

Why this matters

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

www.onixlabs.io takes 1548ms 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

www.onixlabs.io takes 1321ms 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

64% of www.onixlabs.io'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

How third-party costs are calculated

Image Optimization
42 images, 3710 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

42

Total Size

3710 KB

42 missing dimensions 38 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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