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.
3.26 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.27 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.018
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.64 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.
30.70 s
Page Load Progression
523 ms
1.0 s
1.6 s
2.1 s
2.6 s 3.1 s
3.7 s
4.2 sFPage Weight BudgetAction6.7 MB transferred, 118 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 ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction10077ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260419T085420Z&*&protocol=https&wid=_1681692 | 2295ms | 1537ms | 669ms | 3rd |
| https://www.oreilly.com/ | 1340ms | 220ms | 17ms | 3rd |
| Unattributable | 1257ms | 281ms | 0ms | 3rd |
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260419T090447Z&*&protocol=https&wid=_1681692 | 987ms | 660ms | 251ms | 3rd |
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260421T043520Z&*&protocol=https&wid=_1681692 | 903ms | 633ms | 220ms | 3rd |
| https://www.oreilly.com/KxXuCyduA3/oq/qtiMwY_O/X0rEVzzE/MmwmZA/Tnx/rFAktX0sPAg?v=64a007b3-7cd4-c416-0cad-3d5388da0214 | 796ms | 738ms | 39ms | 3rd |
| https://www.oreilly.com/KxXuCyduA3/oq/qtiMwY_O/uXrEVzLwhDD0Nr/aE0gZA/Cxp/8IWwsPSEB | 712ms | 649ms | 50ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5P4V6Z | 488ms | 421ms | 46ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-092EL089CH&cx=c>m=4e64h1 | 283ms | 227ms | 53ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js | 249ms | 158ms | 37ms | 3rd |
Showing top 10 of 16 scripts
FJS BundlesAction26 scripts, 2.2 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260419T085420Z&*&protocol=https&wid=_1681692 | 0 KB | 479 KB (70%) | ✓ | 3rd |
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260419T085420Z&*&protocol=https&wid=_1681692 | 689 KB | 479 KB (70%) | ✓ | 3rd |
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260421T043520Z&*&protocol=https&wid=_1681692 | 689 KB | 479 KB (70%) | ✓ | 3rd |
| https://cdnapisec.kaltura.com/html5/html5lib/v2.86/load.php?debug=false&lang=en&modules=Hlsjs%2CPolyfill_Set%2CacCheck%2CacPreview%2Cbase64_decode%2Cbase64_encode%2Cclass%2CcontrolBarContainer%2CcurrentTimeLabel%2CdurationLabel%2CfullScreenBtn%2Cid3Tag%2CkAnalony%2Ckdark%2CkeyboardShortcuts%2CkgitGuard%2ClargePlayBtn%2CliveStream%2CmatchMedia%2CmorePlugins%2CnativeBridge%2CplayPauseBtn%2Cpolyfill_Array_filter%2CqualitySettings%2CreportError%2Cscreenfull%2Cscrubber%2CsideBarContainer%2CsourceSelector%2Ctheme%2CtopBarContainer%2CunMuteOverlayButton%2Cutf8_encode%2CvolumeControl%7Cjquery.client%2Ccolor%2Ccookie%2Cdebouncedresize%2ChoverIntent%2CmessageBox%2CmwEmbedUtil%2CmwExtension%2CnaturalSize%7Cjquery.ui.core%2Cmouse%2Cposition%2Cslider%2Ctooltip%2CtouchPunch%2Cwidget%7Cmediawiki.Uri%2CUtilitiesTime%2CUtilitiesUrl%2Cclient%2CjqueryMsg%2Ckmenu%2Clanguage%2Cutil%7Cmediawiki.util.tmpl%7Cmw.EmbedPlayer%2CEmbedPlayerImageOverlay%2CEmbedPlayerKplayer%2CEmbedPlayerNative%2CEmbedPlayerNativeComponent%2CEmbedTypes%2CKBaseButton%2CKBaseComponent%2CKBasePlugin%2CKBaseSmartContainer%2CKCuePoints%2CKDPMapping%2CKEntryLoader%2CKWidgetSupport%2CKalturaIframePlayerSetup%2CMediaElement%2CMediaPlayer%2CMediaPlayers%2CMediaSource%2CPlayerElement%2CPlayerElementFlash%2CPlayerElementHTML%2CPluginManager%7Cmw.MwEmbedSupport.style&pskwidgetpath=..%2Fkwidget-ps%2F&skin=no-theme&version=20260419T090447Z&*&protocol=https&wid=_1681692 | 689 KB | 479 KB (70%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-092EL089CH&cx=c>m=4e64h1 | 169 KB | 77 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5P4V6Z | 172 KB | 75 KB (44%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js | 110 KB | 58 KB (53%) | ✓ | 3rd |
| https://www.oreilly.com/KxXuCyduA3/oq/qtiMwY_O/uXrEVzLwhDD0Nr/aE0gZA/Cxp/8IWwsPSEB | 180 KB | 39 KB (22%) | ✓ | 3rd |
| https://www.oreilly.com/KxXuCyduA3/oq/qtiMwY_O/X0rEVzzE/MmwmZA/Tnx/rFAktX0sPAg?v=64a007b3-7cd4-c416-0cad-3d5388da0214 | 150 KB | 31 KB (20%) | ✓ | 3rd |
| https://cdn.oreillystatic.com/ajax/libs/jquery/3.3.1/jquery.min.js | 30 KB | 22 KB (75%) | ✓ | 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 InventoryAction118 resources · 6.7 MB · 2.2 MB savings availableFIX
~2.2 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 118 resources | 6.7 MiB | ||||||
CImage OptimizationAction54 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (170 KB)PASS
Web fonts
7
170 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 ~4 KB and ~8 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 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: Google Cloud
AHTTP Cachingmax-age=2592000 (4 weeks)PASS
max-age=2592000
| Directive | Value | Meaning |
|---|---|---|
| max-age | 2592000 | Cache for 4 weeks |
Network Waterfall118 requests over 4118msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 2295ms | 0 KB | 70% | €25/mo | Costly |
www.oreilly.com www.oreilly.com | Other | 1340ms | 42 KB | — | €15/mo | Costly |
Unattributable Unattributable | Other | 1257ms | 0 KB | — | €14/mo | Costly |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 987ms | 689 KB | 70% | €11/mo | Costly |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 903ms | 689 KB | 70% | €10/mo | Costly |
www.oreilly.com www.oreilly.com | Other | 796ms | 150 KB | 20% | €9/mo | Costly |
www.oreilly.com www.oreilly.com | Other | 712ms | 1 KB | 22% | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 488ms | 172 KB | 44% | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 283ms | 169 KB | 45% | €3/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 249ms | 110 KB | 53% | €3/mo | Essential |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 172ms | 58 KB | — | €2/mo | Optional |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 155ms | 58 KB | — | €2/mo | Optional |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 136ms | 58 KB | — | €1/mo | Optional |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 132ms | 58 KB | — | €1/mo | Optional |
cdnapisec.kaltura.com cdnapisec.kaltura.com | Other | 104ms | 21 KB | — | €1/mo | Optional |
www.oreilly.com www.oreilly.com | Other | 68ms | 29 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- cdnapisec.kaltura.com adds 2295ms and costs ~€25/month
- www.oreilly.com adds 1340ms and costs ~€15/month
- Unattributable adds 1257ms and costs ~€14/month
- cdnapisec.kaltura.com adds 987ms and costs ~€11/month
- cdnapisec.kaltura.com adds 903ms and costs ~€10/month
- www.oreilly.com adds 796ms and costs ~€9/month
- www.oreilly.com adds 712ms and costs ~€8/month
- Google Tag Manager adds 488ms and costs ~€5/month
- Google Tag Manager adds 283ms and costs ~€3/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
cdnapisec.kaltura.com takes 2295ms 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
70% of cdnapisec.kaltura.com'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
www.oreilly.com takes 1340ms 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 1257ms 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
cdnapisec.kaltura.com takes 987ms 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
70% of cdnapisec.kaltura.com'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
cdnapisec.kaltura.com takes 903ms 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
70% of cdnapisec.kaltura.com'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
www.oreilly.com takes 796ms 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
www.oreilly.com takes 712ms 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 488ms 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 283ms 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
53% 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