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.
10.07 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
16.73 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.69 s
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.
10.07 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.
20.81 s
Page Load Progression
FPage Weight BudgetAction2.8 MB transferred, 93 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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction9848ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.tvguide.com/a/neutron/836a9bd.modern.js | 2601ms | 2493ms | 2ms | 3rd |
| Unattributable | 1862ms | 135ms | 0ms | 3rd |
| https://www.tvguide.com/a/neutron/bb43265.modern.js | 895ms | 730ms | 12ms | 3rd |
| https://www.tvguide.com/ | 887ms | 51ms | 112ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.1.0/otBannerSdk.js | 664ms | 420ms | 74ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.1.0/otTCF.js | 643ms | 574ms | 9ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 545ms | 376ms | 87ms | 3rd |
| https://www.tvguide.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 336ms | 322ms | 4ms | 3rd |
| https://www.tvguide.com/a/neutron/7caa04a.modern.js | 283ms | 279ms | 3ms | 3rd |
| https://01.cdn.mediatradecraft.com/tv-guide/main/main.js | 200ms | 142ms | 35ms | 3rd |
Showing top 10 of 19 scripts
FJS BundlesAction33 scripts, 1.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.tvguide.com/a/neutron/bb43265.modern.js | 604 KB | 361 KB (60%) | ✓ | 3rd |
| https://www.tvguide.com/a/neutron/0bbd75c.modern.js | 406 KB | 262 KB (65%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 142 KB (76%) | ✓ | 3rd |
| https://script.wikia.nocookie.net/fandom-ae-assets/platforms/prod/ADEN-13924b/tvguide-mtc/main.bundle.js | 98 KB | 73 KB (75%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.1.0/otBannerSdk.js | 123 KB | 58 KB (47%) | ✓ | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 91 KB | 57 KB (63%) | ✓ | 3rd |
| https://www.tvguide.com/a/neutron/836a9bd.modern.js | 105 KB | 46 KB (44%) | ✓ | 3rd |
| https://static.wikia.nocookie.net/silversurfer/video/prod/standalone-dist/standAlone_RV_VideoPlayer.js | 58 KB | 44 KB (77%) | ✓ | 3rd |
| https://urs-k8s.tvguide.com/sdk/urs.js | 50 KB | 42 KB (84%) | ✓ | 3rd |
| https://01.cdn.mediatradecraft.com/tv-guide/main/main.js | 65 KB | 37 KB (58%) | ✓ | 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 InventoryAction93 resources · 2.8 MB · 1.1 MB savings availableFIX
~1.1 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 93 resources | 2.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization21 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (40 KB)PASS
Web fonts
2
40 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
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
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints3 hints, 0 missing preconnectsPASS
Current Resource Hints
3 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: Cloudflare
Network Waterfall93 requests over 32600msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.tvguide.com www.tvguide.com | Other | 2601ms | 105 KB | 44% | €42/mo | Costly |
Unattributable Unattributable | Other | 1862ms | 0 KB | — | €30/mo | Costly |
www.tvguide.com www.tvguide.com | Other | 895ms | 604 KB | 60% | €14/mo | Costly |
www.tvguide.com www.tvguide.com | Other | 887ms | 179 KB | — | €14/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 664ms | 123 KB | 47% | €11/mo | Essential |
OneTrust cdn.cookielaw.org | Consent | 643ms | 18 KB | — | €10/mo | Essential |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 545ms | 188 KB | 76% | €9/mo | Costly |
www.tvguide.com www.tvguide.com | Other | 336ms | 0 KB | — | €5/mo | Costly |
www.tvguide.com www.tvguide.com | Other | 283ms | 5 KB | — | €5/mo | Costly |
01.cdn.mediatradecraft.com 01.cdn.mediatradecraft.com | Other | 200ms | 65 KB | 58% | €3/mo | Costly |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 182ms | 91 KB | 63% | €3/mo | Optional |
01.cdn.mediatradecraft.com 01.cdn.mediatradecraft.com | Other | 131ms | 1 KB | — | €2/mo | Optional |
static.wikia.nocookie.net static.wikia.nocookie.net | Other | 129ms | 58 KB | 77% | €2/mo | Optional |
script.wikia.nocookie.net script.wikia.nocookie.net | Other | 115ms | 98 KB | 75% | €2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 102ms | 34 KB | — | €2/mo | Optional |
www.tvguide.com www.tvguide.com | Other | 89ms | 61 KB | 49% | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 75ms | 9 KB | — | €1/mo | Essential |
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 55ms | 11 KB | — | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 54ms | 6 KB | — | €1/mo | Essential |
These scripts may cost more than they're worth
- www.tvguide.com adds 2601ms and costs ~€42/month
- Unattributable adds 1862ms and costs ~€30/month
- www.tvguide.com adds 895ms and costs ~€14/month
- www.tvguide.com adds 887ms and costs ~€14/month
- securepubads.g.doubleclick.net adds 545ms and costs ~€9/month
- www.tvguide.com adds 336ms and costs ~€5/month
- www.tvguide.com adds 283ms and costs ~€5/month
- 01.cdn.mediatradecraft.com adds 200ms 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
www.tvguide.com takes 2601ms 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 1862ms 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.tvguide.com takes 895ms 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
60% of www.tvguide.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.tvguide.com takes 887ms 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
securepubads.g.doubleclick.net takes 545ms 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
76% of securepubads.g.doubleclick.net'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.tvguide.com takes 336ms 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.tvguide.com 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
01.cdn.mediatradecraft.com takes 200ms 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
58% of 01.cdn.mediatradecraft.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
63% of c.amazon-adsystem.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
77% of static.wikia.nocookie.net'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
75% of script.wikia.nocookie.net'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