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.
1.75 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.15 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.52 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.20 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.
6.41 s
Page Load Progression
FPage Weight BudgetAction5.7 MB transferred, 131 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
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 CostAction5997ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-site.lc-8e3e12408a07d65b894a89cd5d8bb0ab-lc.min.js | 2809ms | 19ms | 3ms | 3rd |
| https://www.thomsonreuters.com/en | 1436ms | 20ms | 1ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-navigation.lc-5d4cb80756363ae7c20a8787072249a3-lc.min.js | 568ms | 530ms | 2ms | 3rd |
| Unattributable | 385ms | 39ms | 0ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dcl_search_headless.lc-abb191b5111645447b74a14e4f4d8b1b-lc.min.js | 302ms | 161ms | 127ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dependencies.lc-cc12a0916e6a1078f2f4e4a2631caa47-lc.min.js | 174ms | 58ms | 22ms | 3rd |
| https://www.datadoghq-browser-agent.com/us1/v4/datadog-rum.js | 172ms | 92ms | 5ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202512.1.0/otBannerSdk.js | 81ms | 47ms | 9ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-bayberry.lc-a9258d39b71ccb3924cbfb76e7aea378-lc.min.js | 70ms | 61ms | 2ms | 3rd |
FJS BundlesAction44 scripts, 507 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dcl_search_headless.lc-abb191b5111645447b74a14e4f4d8b1b-lc.min.js | 301 KB | 98 KB (34%) | ✓ | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dependencies.lc-cc12a0916e6a1078f2f4e4a2631caa47-lc.min.js | 159 KB | 95 KB (60%) | ✓ | 3rd |
| https://app-data.gcs.trstatic.net/emcm-ui/bundle/v24.102.0/main.js | 109 KB | 71 KB (65%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202512.1.0/otBannerSdk.js | 126 KB | 66 KB (52%) | ✓ | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dcl_components.lc-73852ab130e1444199481bcabb06d3a5-lc.min.js | 71 KB | 48 KB (69%) | ✓ | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-site.lc-8e3e12408a07d65b894a89cd5d8bb0ab-lc.min.js | 42 KB | 31 KB (72%) | ✓ | 3rd |
| https://www.datadoghq-browser-agent.com/us1/v4/datadog-rum.js | 48 KB | 25 KB (53%) | ✓ | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dependencies/resources/11.mo7a6eyd.js | 183 KB | 25 KB (14%) | ✓ | 3rd |
| https://thomsonreutersglis2e.my.site.com/ESWESCMIAWMarketingCha1750476517434/assets/js/bootstrap.min.js | 26 KB | 24 KB (94%) | ✓ | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/clientlibs/granite/jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.js | 35 KB | 23 KB (66%) | ✓ | 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 InventoryAction131 resources · 5.7 MB · 507 KB savings availableFIX
~506.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 131 resources | 5.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization33 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (1066 KB)PASS
Web fonts
8
1066 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~422 KB and ~844 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall131 requests over 35768msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.thomsonreuters.com www.thomsonreuters.com | Other | 2809ms | 42 KB | 72% | $49/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 1436ms | 35 KB | — | $25/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 568ms | 30 KB | — | $10/mo | Costly |
Unattributable Unattributable | Other | 385ms | 0 KB | — | $7/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 302ms | 301 KB | 34% | $5/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 174ms | 159 KB | 60% | $3/mo | Optional |
www.datadoghq-browser-agent.com www.datadoghq-browser-agent.com | Other | 172ms | 48 KB | 53% | $3/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 81ms | 126 KB | 52% | $1/mo | Essential |
www.thomsonreuters.com www.thomsonreuters.com | Other | 70ms | 9 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.thomsonreuters.com adds 2809ms and costs ~$49/month
- www.thomsonreuters.com adds 1436ms and costs ~$25/month
- www.thomsonreuters.com adds 568ms and costs ~$10/month
- Unattributable adds 385ms and costs ~$7/month
- www.thomsonreuters.com adds 302ms and costs ~$5/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.thomsonreuters.com takes 2809ms 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
72% of www.thomsonreuters.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.thomsonreuters.com takes 1436ms 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.thomsonreuters.com takes 568ms 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 385ms 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.thomsonreuters.com takes 302ms 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.thomsonreuters.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
53% of www.datadoghq-browser-agent.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
52% 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