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https://www.segment.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
5
REVIEW
2
PASS
7
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

18
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

9.82 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

15.22 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

710 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.468

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

9.82 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.

24.39 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 s
Checks
16
7 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
3.8 MB transferred, 117 requests
FIX
3.8 MB transferred, 117 requests
Warning::
Page weighs 6.6 MB (3.8 MB transferred)
Warning::
JavaScript is 1.7 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.7 MB
Info::
CSS is 691 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 691 KB
Info::
Fonts are 339 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 339 KB
Warning::
117 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.80 g CO2 per page load
3.8 MB / 2.4 MB budget
3.8 MB transferred
117 requests
0.80 g CO2 per page load
JavaScript 1.7 MiB 44%
CSS 690.6 KiB 18%
HTML 491.2 KiB 13%
Images 353.2 KiB 9%
Fonts 338.9 KiB 9%
Other 205.4 KiB 5%
Other 123.3 KiB 3%
Other 5.9 KiB 0%
Other 1.1 KiB 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (3.8 MiB of 3.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5800ms total JS execution
FIX
5800ms total JS execution
Warning::
https://www.twilio.com/en-us/segment: 1583ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5JL...: 1024ms CPU time
Warning::
Unattributable: 943ms CPU time
Warning::
https://euob.powerrobotflower.com/sxp/i/40532d5df9...: 500ms CPU time
Warning::
https://obseu.powerrobotflower.com/ct?id=25118&url...: 343ms CPU time
Warning::
Third-party scripts: 5800ms (100% of total)

Main Thread Breakdown

Script Evaluation 57% Other 19% Style & Layout 11% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.twilio.com/en-us/segment1583ms689ms114ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5JLZ6941024ms803ms59ms3rd
Unattributable943ms117ms0ms3rd
https://euob.powerrobotflower.com/sxp/i/40532d5df9f288cf593998bcff0654c9.js500ms365ms11ms3rd
https://obseu.powerrobotflower.com/ct?id=25118&url=https%3A%2F%2Fwww.twilio.com%2Fen-us%2Fsegment&sf=0&tpi=&ch=cheq4ppc&uvid=&tsf=0&tsfmi=&tsfu=&cb=1775593428065&hl=2&op=0&ag=3718557780&rand=94525282919070290081877511878990705609058595006127610085571217198622911892130199885789951102&fs=412x823&fst=412x823&np=linux%20x86_64&nv=google%20inc.&ref=&ss=412x823&nc=0&at=&di=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%3D%3D&dep=0&pre=0&sdd=&cri=drkUPPGwf3&pto=1665&ver=65&gac=-&mei=&ap=&fe=1&duid=1.1775593428.QWNFV8sIqjqCCDFQ&suid=1.1775593428.80ZKR4OVa1CeiYUm&tuid=1.1775593428.2PXycUui6Nwg3tM8&sid=1.1775593428067.S9kIZZnrhesDNoc5&fbc=-&gtm=WyJwaWlSZWRhY3RlZCIsImNvbnNlbnRNYW5hZ2VyTG9hZGVkIiwidHJ1c3RhcmNMb2FkZWQiLCJDb25zZW50IENoYW5nZWQiLCJHRFBSIFByZWYgQWxsb3dzIDAiXQ%3D%3D&it=81%2C1365%2C180&fbcl=-&gacl=-&gacsd=-&rtic=-&rtict=-&bgc=-&spa=1&urid=0&ab=&sck=-&io=aGA2Og%3D%3D343ms310ms1ms3rd
https://consent.trustarc.com/asset/adv-bundle.js?v=v1.7-8549253ms153ms2ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-923239173&cx=c&gtm=4e6460244ms208ms33ms3rd
https://assets.adobedtm.com/a62564f453ce/b1b9d7ec982b/launch-29605e749a31.min.js221ms164ms31ms3rd
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/5874.c1d494a1c6eb384691be.js140ms88ms19ms3rd
https://connect.facebook.net/en_US/fbevents.js125ms98ms27ms3rd

Showing top 10 of 16 scripts

F
JS Bundles
Action
50 scripts, 801 KB unused
FIX
50 scripts, 801 KB unused
Warning::
https://www.twilio.com/etc.clientlibs/twilio-found...: 184 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.twilio.com/etc.clientlibs/twilio-found...: 178 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.twilio.com/etc.clientlibs/twilio-com/c...: 88 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.twilio.com/etc.clientlibs/twilio-found...: 81 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5JL...: 71 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 801 KB
801 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/4596.8fe2d1526ef31a5a634e.js208 KB184 KB (89%)3rd
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/5874.c1d494a1c6eb384691be.js233 KB178 KB (77%)3rd
https://www.twilio.com/etc.clientlibs/twilio-com/clientlibs/clientlib-site.lc-4750d7d000b27b3f16919e93029e86fe-lc.min.js125 KB88 KB (71%)3rd
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site.lc-0ab2b9c0175216323d0ad407c7fab92e-lc.min.js126 KB81 KB (65%)3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5JLZ694195 KB71 KB (36%)3rd
https://www.twilio.com/etc.clientlibs/clientlibs/granite/jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.js100 KB64 KB (65%)3rd
https://www.googletagmanager.com/gtag/js?id=AW-923239173&cx=c&gtm=4e6460146 KB60 KB (41%)3rd
https://assets.adobedtm.com/a62564f453ce/b1b9d7ec982b/launch-29605e749a31.min.js76 KB42 KB (56%)3rd
https://connect.facebook.net/en_US/fbevents.js95 KB33 KB (35%)3rd
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/1613.ac907925dbbb05a56518.js3 KB3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
22 images, 0 KB saveable
REVIEW
22 images, 0 KB saveable
Warning::
https://www.twilio.com/content/dam/segment/global/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/segment/global/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/segment/global/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://consent.trustarc.com/asset/twilio2.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
22 images 353 KB
0 oversized -0 KB
19 legacy format
4 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
7 fonts (339 KB)
PASS
7 fonts (339 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

339 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 9.8 s LCP 15.2 shttps://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/e408c138892b0f08a23d.woff2e408c138892b0f08a23d.woff2 https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/e408c138892b0f08a23d.woff2 — 72.6 KiB — 0 ms — font-display: swaphttps://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/a20a647d19af27011c7c.woff2a20a647d19af27011c7c.woff2 https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/a20a647d19af27011c7c.woff2 — 72.7 KiB — 0 ms — font-display: swaphttps://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/220e5b59f8588716f4d8.woff2220e5b59f8588716f4d8.woff2 https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/220e5b59f8588716f4d8.woff2 — 73.9 KiB — 0 ms — font-display: swaphttps://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/ee7a891efcbc6ef61942.woff2ee7a891efcbc6ef61942.woff2 https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/ee7a891efcbc6ef61942.woff2 — 73.8 KiB — 0 ms — font-display: swaphttps://consent.trustarc.com/get?name=Whitney-Light.otfget https://consent.trustarc.com/get?name=Whitney-Light.otf — 15.3 KiB — 0 ms — font-display: swaphttps://consent.trustarc.com/get?name=Whitney-Book.otfget https://consent.trustarc.com/get?name=Whitney-Book.otf — 15.5 KiB — 0 ms — font-display: swaphttps://consent.trustarc.com/get?name=Whitney-Medium.otfget https://consent.trustarc.com/get?name=Whitney-Medium.otf — 15.1 KiB — 0 ms — font-display: swap
e408c138892b0f08a23d.woff2 woff2 swap
Size 73 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
a20a647d19af27011c7c.woff2 woff2 swap
Size 73 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
220e5b59f8588716f4d8.woff2 woff2 swap
Size 74 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ee7a891efcbc6ef61942.woff2 woff2 swap
Size 74 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
get otf swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
get otf swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
get otf swap
Size 15 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~14 KB and ~28 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
1
preload
dns-prefetch
prefetch

1 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
117 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 5800ms · 1676KB · €101/mo
www.twilio.com
Other
Costly
Execution 1583ms
Transfer 487 KB
Monthly Cost €28/mo
Google Tag Manager
Tag Manager
Costly
Execution 1024ms
Transfer 195 KB
Unused 36%
Monthly Cost €18/mo
Unattributable
Other
Costly
Execution 943ms
Transfer 0 KB
Monthly Cost €16/mo
euob.powerrobotflower.com
Other
Costly
Execution 500ms
Transfer 45 KB
Monthly Cost €9/mo
obseu.powerrobotflower.com
Other
Costly
Execution 343ms
Transfer 2 KB
Monthly Cost €6/mo
consent.trustarc.com
Other
Costly
Execution 253ms
Transfer 77 KB
Monthly Cost €4/mo
Google Tag Manager
Tag Manager
Costly
Execution 244ms
Transfer 146 KB
Unused 41%
Monthly Cost €4/mo
assets.adobedtm.com
Other
Costly
Execution 221ms
Transfer 76 KB
Unused 56%
Monthly Cost €4/mo
www.twilio.com
Other
Optional
Execution 140ms
Transfer 233 KB
Unused 77%
Monthly Cost €2/mo
Facebook Pixel
Advertising
Optional
Execution 125ms
Transfer 95 KB
Unused 35%
Monthly Cost €2/mo
consent.trustarc.com
Other
Optional
Execution 86ms
Transfer 36 KB
Monthly Cost €2/mo
Facebook Pixel
Advertising
Optional
Execution 82ms
Transfer 39 KB
Monthly Cost €1/mo
www.twilio.com
Other
Optional
Execution 74ms
Transfer 126 KB
Unused 65%
Monthly Cost €1/mo
LinkedIn Insight
Advertising
Optional
Execution 62ms
Transfer 19 KB
Monthly Cost €1/mo
Segment
Analytics
Optional
Execution 59ms
Transfer 1 KB
Monthly Cost €1/mo
www.twilio.com
Other
Optional
Execution 58ms
Transfer 100 KB
Unused 65%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.twilio.com adds 1583ms and costs ~€28/month
  • Google Tag Manager adds 1024ms and costs ~€18/month
  • Unattributable adds 943ms and costs ~€16/month
  • euob.powerrobotflower.com adds 500ms and costs ~€9/month
  • obseu.powerrobotflower.com adds 343ms and costs ~€6/month
  • consent.trustarc.com adds 253ms and costs ~€4/month
  • Google Tag Manager adds 244ms and costs ~€4/month
  • assets.adobedtm.com adds 221ms and costs ~€4/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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.twilio.com takes 1583ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 1024ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 943ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

euob.powerrobotflower.com takes 500ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

obseu.powerrobotflower.com takes 343ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

consent.trustarc.com takes 253ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 244ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets.adobedtm.com takes 221ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

56% of assets.adobedtm.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

77% of www.twilio.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

65% of www.twilio.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

65% of www.twilio.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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