Performance
· 15 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.
1.21 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.68 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.87 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.035
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.51 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.
5.19 s
Page Load Progression
997 ms
2.0 s
3.0 s
4.0 s
5.0 s
6.0 s
7.0 s
8.0 sFPage Weight BudgetAction4.5 MB transferred, 193 requestsFIX
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
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
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 CostAction5871ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.rottentomatoes.com/rt-common.js?seed=AADSoLGdAQAA5F9XMOrUvLmuQzMI-JfOiDG4oFS_moBV5rFz5Edt6nJsHMPX&HgdtNmCjYr--z=q | 1368ms | 1180ms | 17ms | 3rd |
| https://www.rottentomatoes.com/ | 1046ms | 44ms | 11ms | 3rd |
| https://www.rottentomatoes.com/assets/pizza-pie/javascripts/roma/bundles/home.3ba6bd86655.js | 705ms | 518ms | 13ms | 3rd |
| https://www.rottentomatoes.com/assets/pizza-pie/javascripts/bundles/roma/default.abb548dc1cb.js | 668ms | 461ms | 30ms | 3rd |
| Unattributable | 635ms | 119ms | 1ms | 3rd |
| https://assets.adobedtm.com/launch-EN549327edc13e414a9beb5d61bfd9aac6.min.js | 524ms | 472ms | 25ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 311ms | 109ms | 21ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 290ms | 241ms | 27ms | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 142ms | 120ms | 17ms | 3rd |
| https://app.mps.vsnt.net/fetch/ext/load-rottentomatoes-web.js?nowrite=2 | 113ms | 57ms | 19ms | 3rd |
Showing top 10 of 11 scripts
DJS BundlesAction33 scripts, 488 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 128 KB (68%) | ✓ | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/27850.js | 111 KB | 62 KB (56%) | ✓ | 3rd |
| https://assets.adobedtm.com/launch-EN549327edc13e414a9beb5d61bfd9aac6.min.js | 133 KB | 62 KB (47%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 128 KB | 61 KB (48%) | ✓ | 3rd |
| https://cdn.jwplayer.com/libraries/U8MHzHHR.js | 66 KB | 43 KB (66%) | ✓ | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 91 KB | 38 KB (42%) | ✓ | 3rd |
| https://www.rottentomatoes.com/assets/pizza-pie/javascripts/bundles/roma/default.abb548dc1cb.js | 206 KB | 38 KB (18%) | ✓ | 3rd |
| https://www.rottentomatoes.com/assets/pizza-pie/javascripts/bundles/roma/vendors.a4cc402b78a.js | 39 KB | 28 KB (73%) | ✓ | 3rd |
| https://app.mps.vsnt.net/fetch/ext/load-rottentomatoes-web.js?nowrite=2 | 58 KB | 27 KB (47%) | ✗ | 3rd |
| blob:https://www.rottentomatoes.com/53b70f5e-3316-4b5a-b417-625cac0a531f | -0 KB | — | ✓ | 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 InventoryAction193 resources · 4.5 MB · 488 KB savings availableFIX
~488.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 193 resources | 4.5 MiB | ||||||
CImage OptimizationAction126 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.
Performance issues directly impact user engagement and conversion rates.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingmax-age=0REVIEW
max-age=0
| Directive | Value | Meaning |
|---|---|---|
| max-age | 0 | Cache for 0 seconds |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (92 KB)PASS
Web fonts
4
92 KB total
Render-blocking
0
of 4
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 HintsNo optimization neededPASS
Network Waterfall193 requests over 6522msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.rottentomatoes.com www.rottentomatoes.com | Other | 1368ms | 189 KB | — | $18/mo | Costly |
www.rottentomatoes.com www.rottentomatoes.com | Other | 1046ms | 62 KB | — | $14/mo | Costly |
www.rottentomatoes.com www.rottentomatoes.com | Other | 705ms | 82 KB | — | $9/mo | Costly |
www.rottentomatoes.com www.rottentomatoes.com | Other | 668ms | 206 KB | 18% | $9/mo | Costly |
Unattributable Unattributable | Other | 635ms | 0 KB | — | $8/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 524ms | 133 KB | 47% | $7/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 311ms | 128 KB | 48% | $4/mo | Essential |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 290ms | 188 KB | 68% | $4/mo | Costly |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 142ms | 91 KB | 42% | $2/mo | Optional |
app.mps.vsnt.net app.mps.vsnt.net | Other | 113ms | 58 KB | 47% | $2/mo | Optional |
micro.rubiconproject.com micro.rubiconproject.com | Other | 69ms | 111 KB | 56% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.rottentomatoes.com adds 1368ms and costs ~$18/month
- www.rottentomatoes.com adds 1046ms and costs ~$14/month
- www.rottentomatoes.com adds 705ms and costs ~$9/month
- www.rottentomatoes.com adds 668ms and costs ~$9/month
- Unattributable adds 635ms and costs ~$8/month
- assets.adobedtm.com adds 524ms and costs ~$7/month
- securepubads.g.doubleclick.net adds 290ms and costs ~$4/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.rottentomatoes.com takes 1368ms 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.rottentomatoes.com takes 1046ms 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.rottentomatoes.com takes 705ms 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.rottentomatoes.com takes 668ms 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 635ms 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
assets.adobedtm.com takes 524ms 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 290ms 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
68% 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
56% of micro.rubiconproject.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