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.
6.67 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
22.85 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.88 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.
11.80 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.
27.67 s
Page Load Progression
FPage Weight BudgetAction5.3 MB transferred, 126 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 CostAction12535ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.datadoghq-browser-agent.com/us1/v4/datadog-rum.js | 6311ms | 163ms | 19ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-navigation.lc-5d4cb80756363ae7c20a8787072249a3-lc.min.js | 1877ms | 1779ms | 6ms | 3rd |
| https://www.thomsonreuters.com/en | 1261ms | 104ms | 5ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dcl_search_headless.lc-abb191b5111645447b74a14e4f4d8b1b-lc.min.js | 1043ms | 492ms | 357ms | 3rd |
| Unattributable | 815ms | 52ms | 0ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dependencies.lc-cc12a0916e6a1078f2f4e4a2631caa47-lc.min.js | 441ms | 192ms | 77ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-site.lc-8e3e12408a07d65b894a89cd5d8bb0ab-lc.min.js | 253ms | 51ms | 11ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dcl_components.lc-73852ab130e1444199481bcabb06d3a5-lc.min.js | 142ms | 90ms | 18ms | 3rd |
| https://app-data.gcs.trstatic.net/emcm-ui/bundle/v24.102.0/main.js | 139ms | 111ms | 27ms | 3rd |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dependencies/resources/11.mo7a6eyd.js | 113ms | 24ms | 88ms | 3rd |
Showing top 10 of 12 scripts
DJS BundlesAction43 scripts, 441 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 | 160 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://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-dcl_components.lc-73852ab130e1444199481bcabb06d3a5-lc.min.js | 70 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 | 26 KB (54%) | ✓ | 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 |
| https://www.thomsonreuters.com/etc.clientlibs/uefalcon/clientlibs/clientlib-navigation.lc-5d4cb80756363ae7c20a8787072249a3-lc.min.js | 30 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 InventoryAction126 resources · 5.3 MB · 441 KB savings availableFIX
~441.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 126 resources | 5.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization31 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 (833 KB)PASS
Web fonts
8
833 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
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 ~281 KB and ~562 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints9 hints, 0 missing preconnectsPASS
Current Resource Hints
9 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall126 requests over 5340msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.datadoghq-browser-agent.com www.datadoghq-browser-agent.com | Other | 6311ms | 48 KB | 54% | $109/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 1877ms | 30 KB | — | $32/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 1261ms | 35 KB | — | $22/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 1043ms | 301 KB | 34% | $18/mo | Costly |
Unattributable Unattributable | Other | 815ms | 0 KB | — | $14/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 441ms | 160 KB | 60% | $8/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 253ms | 42 KB | 72% | $4/mo | Costly |
www.thomsonreuters.com www.thomsonreuters.com | Other | 142ms | 70 KB | 69% | $2/mo | Optional |
app-data.gcs.trstatic.net app-data.gcs.trstatic.net | Other | 139ms | 109 KB | 65% | $2/mo | Optional |
www.thomsonreuters.com www.thomsonreuters.com | Other | 113ms | 183 KB | 14% | $2/mo | Optional |
cdn.appdynamics.com cdn.appdynamics.com | Other | 71ms | 17 KB | — | $1/mo | Optional |
www.thomsonreuters.com www.thomsonreuters.com | Other | 68ms | 35 KB | 66% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.datadoghq-browser-agent.com adds 6311ms and costs ~$109/month
- www.thomsonreuters.com adds 1877ms and costs ~$32/month
- www.thomsonreuters.com adds 1261ms and costs ~$22/month
- www.thomsonreuters.com adds 1043ms and costs ~$18/month
- Unattributable adds 815ms and costs ~$14/month
- www.thomsonreuters.com adds 441ms and costs ~$8/month
- www.thomsonreuters.com adds 253ms 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.datadoghq-browser-agent.com takes 6311ms 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
54% 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
www.thomsonreuters.com takes 1877ms 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 1261ms 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 1043ms 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 815ms 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 441ms 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
www.thomsonreuters.com takes 253ms 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
69% 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
65% of app-data.gcs.trstatic.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
66% 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