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.
7.50 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
28.60 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.65 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.
11.26 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.
29.46 s
Page Load Progression
375 ms 750 ms 1.1 s 1.5 s 1.9 s 2.2 s
2.6 s
3.0 sFPage Weight BudgetAction3.4 MB transferred, 232 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
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 CostAction6389ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1229ms | 27ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T8HG9X4 | 1198ms | 1093ms | 60ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6D2F5M2DQK&cx=c>m=4e64k0 | 501ms | 384ms | 40ms | 3rd |
| https://www.transunion.com/ | 495ms | 63ms | 5ms | 3rd |
| https://assets.adobedtm.com/1d56dec66bd4/51ddf8b365e8/launch-7938b1342a29.min.js | 376ms | 303ms | 30ms | 3rd |
| https://www.transunion.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 245ms | 233ms | 2ms | 3rd |
| https://cdn-ukwest.onetrust.com/scripttemplates/202601.2.0/otBannerSdk.js | 240ms | 159ms | 45ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17064923859&cx=c>m=4e64k0 | 226ms | 195ms | 29ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-4395963&cx=c>m=4e64k0 | 196ms | 162ms | 31ms | 3rd |
| https://siteintercept.qualtrics.com/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=www.transunion.com | 193ms | 157ms | 9ms | 3rd |
Showing top 10 of 25 scripts
FJS BundlesAction65 scripts, 941 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://lpcdn.lpsnmedia.net/le_unified_window/10.47.0-release_2318786578/mobileEmbedded.js?version=10.47.0-release_2318786578 | 263 KB | 180 KB (69%) | ✓ | 3rd |
| https://www.transunion.com/etc.clientlibs/transunion/clientlibs/clientlib-trubrand.lc-19c058bab366060d820a44d0da806af3-lc.min.js | 174 KB | 141 KB (83%) | ✓ | 3rd |
| https://cdn-ukwest.onetrust.com/scripttemplates/202601.2.0/otBannerSdk.js | 129 KB | 68 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6D2F5M2DQK&cx=c>m=4e64k0 | 177 KB | 64 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-8524752&cx=c>m=4e64k0 | 126 KB | 63 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-4395963&cx=c>m=4e64k0 | 131 KB | 63 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17064923859&cx=c>m=4e64k0 | 144 KB | 60 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T8HG9X4 | 181 KB | 58 KB (32%) | ✓ | 3rd |
| https://resources.digital-cloud-west.medallia.com/wdcwest/147534/onsite/generic1776687762436.js | 89 KB | 52 KB (58%) | ✓ | 3rd |
| https://lptag.liveperson.net/lptag/api/account/6091852/configuration/applications/taglets/.jsonp?v=2.0&df=undefined&b=undefined | 122 KB | 48 KB (43%) | ✓ | 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 InventoryAction232 resources · 3.4 MB · 941 KB savings availableFIX
~941.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 232 resources | 3.4 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| max-age | 0 | Cache for 0 seconds |
| no-store | — | Never cache this response |
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
| post-check | 0 | |
| pre-check | 0 |
CImage OptimizationAction87 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.
Performance issues directly impact user engagement and conversion rates.
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 Loading3 fonts (137 KB)PASS
Web fonts
3
137 KB total
Render-blocking
0
of 3
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
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 Waterfall232 requests over 2984msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1229ms | 0 KB | — | $16/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 1198ms | 181 KB | 32% | $16/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 501ms | 177 KB | 36% | $7/mo | Costly |
www.transunion.com www.transunion.com | Other | 495ms | 17 KB | — | $7/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 376ms | 106 KB | 45% | $5/mo | Costly |
www.transunion.com www.transunion.com | Other | 245ms | 0 KB | — | $3/mo | Costly |
cdn-ukwest.onetrust.com cdn-ukwest.onetrust.com | Other | 240ms | 129 KB | 53% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 226ms | 144 KB | 42% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 196ms | 131 KB | 48% | $3/mo | Optional |
siteintercept.qualtrics.com siteintercept.qualtrics.com | Other | 193ms | 36 KB | 59% | $3/mo | Optional |
lpcdn.lpsnmedia.net lpcdn.lpsnmedia.net | Other | 169ms | 263 KB | 69% | $2/mo | Optional |
www.transunion.com www.transunion.com | Other | 157ms | 174 KB | 83% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 149ms | 126 KB | 50% | $2/mo | Optional |
Hotjar script.hotjar.com | Session Replay | 143ms | 57 KB | 67% | $2/mo | Optional |
lptag.liveperson.net lptag.liveperson.net | Other | 137ms | 122 KB | 43% | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 133ms | 97 KB | 38% | $2/mo | Optional |
resources.digital-cloud-west.medallia.com resources.digital-cloud-west.medallia.com | Other | 99ms | 89 KB | 58% | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 86ms | 15 KB | — | $1/mo | Optional |
lpcdn.lpsnmedia.net lpcdn.lpsnmedia.net | Other | 68ms | 16 KB | — | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 61ms | 32 KB | — | $1/mo | Optional |
www.transunion.com www.transunion.com | Other | 60ms | 111 KB | — | $1/mo | Optional |
tags.srv.stackadapt.com tags.srv.stackadapt.com | Other | 60ms | 8 KB | — | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 59ms | 19 KB | — | $1/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 55ms | 1 KB | — | $1/mo | Optional |
g.3gl.net g.3gl.net | Other | 55ms | 32 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1229ms and costs ~$16/month
- Google Tag Manager adds 1198ms and costs ~$16/month
- Google Tag Manager adds 501ms and costs ~$7/month
- www.transunion.com adds 495ms and costs ~$7/month
- assets.adobedtm.com adds 376ms and costs ~$5/month
- www.transunion.com adds 245ms and costs ~$3/month
- cdn-ukwest.onetrust.com adds 240ms and costs ~$3/month
- Google Tag Manager adds 226ms 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
Unattributable takes 1229ms 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 1198ms 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 501ms 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.transunion.com takes 495ms 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 376ms 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.transunion.com takes 245ms 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
cdn-ukwest.onetrust.com takes 240ms 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 cdn-ukwest.onetrust.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
Google Tag Manager takes 226ms 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
59% of siteintercept.qualtrics.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
69% of lpcdn.lpsnmedia.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
83% of www.transunion.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
50% of Google Tag Manager'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
67% of Hotjar'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
58% of resources.digital-cloud-west.medallia.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