https://www.skyworksinc.com/Products/Optocouplers
Performance
· 28 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
78
GRADE
C
FIX
5
REVIEW
7
PASS
12
INFO
4
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
43
99
96
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.61 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
918 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.023
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.26 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.
17.54 s
Page Load Progression
Checks
2812 PASS 7 REVIEW 5 FIX
FPage Weight BudgetAction2.6 MB transferred, 65 requestsFIX
Page Weight Budget
Action2.6 MB transferred, 65 requests
2.6 MB transferred, 65 requests
Warning::
Page weighs 8.0 MB (2.6 MB transferred)
Warning::
JavaScript is 1.8 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.8 MB
Info::
65 HTTP requests
Info::
Estimated 0.54 g CO2 per page load
2.6 MB transferred
65 requests
0.54 g CO2 per page load
JavaScript 1.8 MiB 69%
Images 429.2 KiB 16%
Fonts 197.0 KiB 7%
CSS 113.2 KiB 4%
HTML 45.4 KiB 2%
Other 35.5 KiB 1%
Other 3.7 KiB 0%
Other 3.0 KiB 0%
0 2.4 MB 4.9 MB
Over 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
FJS Execution CostAction4482ms total JS executionFIX
JS Execution Cost
Action4482ms total JS execution
4482ms total JS execution
Warning::
https://www.skyworksinc.com/Scripts/Sitecore.Found...: 2358ms CPU time
Warning::
https://www.skyworksinc.com/Products/Optocouplers: 670ms CPU time
Warning::
Unattributable: 549ms CPU time
Warning::
https://www.skyworksinc.com/scripts/vendors/ag-gri...: 481ms CPU time
Info::
https://cdn.cookielaw.org/scripttemplates/202211.1...: 232ms CPU time
Info::
Third-party scripts: 423ms (9% of total)
Main Thread Breakdown
Script Evaluation 58% Other 14% Script Parsing & Compilation 9% Style & Layout 9% Parse HTML & CSS 4% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.skyworksinc.com/Scripts/Sitecore.Foundation.Theming.skyworks.min.js?v=639288703660000000-9008021 | 2358ms | 1948ms | 118ms | 1st |
| https://www.skyworksinc.com/Products/Optocouplers | 670ms | 20ms | 6ms | 1st |
| Unattributable | 549ms | 79ms | 0ms | 1st |
| https://www.skyworksinc.com/scripts/vendors/ag-grid-enterprise.min.js | 481ms | 253ms | 227ms | 1st |
| https://cdn.cookielaw.org/scripttemplates/202211.1.0/otBannerSdk.js | 232ms | 155ms | 33ms | 3rd |
| https://cdn.chatbot.com/widget/v2/plugin.js | 132ms | 117ms | 3ms | 3rd |
| https://cdn.cookielaw.org/consent/eef40737-d7fc-4449-bbe3-93b349d9ce1a/OtAutoBlock.js | 59ms | 55ms | 1ms | 3rd |
FJS BundlesAction29 scripts, 947 KB unusedFIX
JS Bundles
Action29 scripts, 947 KB unused
29 scripts, 947 KB unused
Warning::
https://www.skyworksinc.com/scripts/vendors/ag-gri...: 510 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.skyworksinc.com/Scripts/Sitecore.Found...: 261 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.skyworksinc.com/scripts/vendors/plugin...: 68 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.skyworksinc.com/scripts/vendors/jquery...: 59 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202211.1...: 48 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 947 KB
947 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.skyworksinc.com/scripts/vendors/ag-grid-enterprise.min.js | 786 KB | 510 KB (65%) | ✓ | 1st |
| https://www.skyworksinc.com/Scripts/Sitecore.Foundation.Theming.skyworks.min.js?v=639288703660000000-9008021 | 313 KB | 261 KB (84%) | ✓ | 1st |
| https://www.skyworksinc.com/scripts/vendors/plugin.js | 71 KB | 68 KB (100%) | ✓ | 1st |
| https://www.skyworksinc.com/scripts/vendors/jquery-ui.min.js | 69 KB | 59 KB (89%) | ✓ | 1st |
| https://cdn.cookielaw.org/scripttemplates/202211.1.0/otBannerSdk.js | 92 KB | 48 KB (53%) | ✓ | 3rd |
| https://www.skyworksinc.com/scripts/MinForSC/Language.min.js?v=639288699620000000 | 4 KB | — | ✓ | 1st |
| https://www.skyworksinc.com/scripts/vendors/gridjs.umd.js | 18 KB | — | ✓ | 1st |
| https://cdn.cookielaw.org/consent/eef40737-d7fc-4449-bbe3-93b349d9ce1a/OtAutoBlock.js | 3 KB | — | ✓ | 3rd |
| https://www.skyworksinc.com/Scripts/Navigation/navtrail.js?v=639288699560000000 | 3 KB | — | ✓ | 1st |
| https://www.skyworksinc.com/Scripts/Product/howToBuy.js?v=639288699560000000 | 8 KB | — | ✗ | 1st |
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
FPage Weight InventoryAction65 resources · 2.6 MB · 947 KB savings availableFIX
Page Weight Inventory
Action65 resources · 2.6 MB · 947 KB savings available
65 resources · 2.6 MB · 947 KB savings available
Warning::
Page weight 2.6 MB exceeds 1 MB target by 1.6 MB
Got: 2.6 MB Expected: ≤ 1 MB
Info::
~947 KB of savings available
Info::
40 third-party resources (28% of weight)
Info::
3 resources over 200KB
65 resources · 2.6 MiB · 40 third-party 1.6 MiB over 1MB target
JavaScript 69% · 1.8 MiB
Image 16% · 433.4 KiB
Font 7% · 197.0 KiB
CSS 4% · 117.0 KiB
Document 2% · 45.4 KiB
Other 1% · 34.2 KiB
~946.6 KiB of savings available
Remove unused JavaScript: 946.6 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 65 resources | 2.6 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
HTTP Caching
Actionno-store (uncacheable)
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-cache, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
no-cache, no-store
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
CImage OptimizationAction11 images, 0 KB saveableREVIEW
Image Optimization
Action11 images, 0 KB saveable
11 images, 0 KB saveable
Warning::
https://www.skyworksinc.com/-/media/SkyWorks/Image... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.skyworksinc.com/-/media/SkyWorks/Image... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.skyworksinc.com/-/media/SkyWorks/Image... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.skyworksinc.com/-/media/SkyWorks/Image... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 429 KB
0 oversized -0 KB
10 legacy format
4 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
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.
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
Document Compression
Document response uses gzip; brotli would be ~20% smaller
Document 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.
CAsset CompressionAction1 of 2 asset hosts serve text uncompressedREVIEW
Asset Compression
Action1 of 2 asset hosts serve text uncompressed
1 of 2 asset hosts serve text uncompressed
Warning::
fonts.googleapis.com serves text assets uncompressed (assets: 4)
The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.
Got: fonts.googleapis.com (text/css)
Info::
cdn.chatbot.com serves assets with gzip; brotli would be ~20% smaller (assets: 3)
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: cdn.chatbot.com (text/javascript)
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.
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
JavaScript Blocking
2 JS blocking issue(s) detected
2 JS blocking issue(s) detected
Warning::
2 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 4.5 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.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
AThird-Party Impact28% third-party, 0 ms blockingPASS
Third-Party Impact
28% third-party, 0 ms blocking
28% third-party, 0 ms blocking
Info::
Third-party code accounts for 28% of page weight (755.2 KiB of 2.6 MiB)
Info::
Third-party blocking time is low (0 ms)
72%
28%
First-party Third-party
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.
A+Font Loading5 fonts (197 KB)PASS
Font Loading
5 fonts (197 KB)
5 fonts (197 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
5
197 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
8vIQ7wUr0m80wwYf0QCXZzY... woff2 swap
Size 30 KB
Load time 42 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 116 KB
Load time 54 ms
Start 1.5 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
fa-regular-400.woff2 woff2 swap
Size 26 KB
Load time 29 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
source-sans-pro-v14-lat... woff2 swap
Size 0 KB
Load time -2677 ms
Start 2.7 s
Risk FOUT — text flashes from fallback to web font
source-sans-pro-v14-lat... woff2 swap
Size 26 KB
Load time 23 ms
Start 2.9 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)
Fixing the unchecked items could save ~58 KB and ~116 ms
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 3
preload—
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-store -- correct for sensitive/dynamic contentPASS
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-cache, no-store
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
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 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
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
CSS Performance Depth
1 CSS depth issue(s) detected
1 CSS depth issue(s) detected
Warning::
5 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.
Network Waterfall65 requests over 2898msINFO
Network Waterfall
65 requests over 2898ms
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
9% of JavaScript execution is third-party
First-party Third-party 423ms · 106KB · $6/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
OneTrust cdn.cookielaw.org | Consent | 232ms | 92 KB | 53% | $3/mo | Essential |
cdn.chatbot.com cdn.chatbot.com | Other | 132ms | 11 KB | — | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 59ms | 3 KB | — | $1/mo | Essential |
OneTrust
Consent
Execution 232ms
Transfer 92 KB
Unused 53%
Monthly Cost $3/mo
cdn.chatbot.com
Other
Execution 132ms
Transfer 11 KB
Monthly Cost $2/mo
OneTrust
Consent
Execution 59ms
Transfer 3 KB
Monthly Cost $1/mo
53% of OneTrust'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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-11 — 2026-11-07)
LCP (p75)
1943 ms
83% good
INP (p75)
71 ms
96% good
CLS (p75)
0.020
93% good
FCP (p75)
1629 ms
TTFB (p75)
868 ms
This origin passes Core Web Vitals assessment
Image Optimization11 images, 410 KB total, 266 KB wastedINFO
Image Optimization
11 images, 410 KB total, 266 KB wasted
Image Optimization Audit
Total Images
11
Total Size
410 KB
Oversized
2
Wasted
266 KB
8 missing dimensions 7 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.