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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
3
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
33
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

1.74 s

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

4.65 s

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

933 ms

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

0.058

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

5.26 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.

11.69 s

Page Load Progression

801 ms
1.6 s
2.4 s
3.2 s
4.0 s
4.8 s
5.6 s
6.4 s
Checks
14
6 PASS 3 REVIEW 3 FIX
F
Page Weight Budget
Action
11.2 MB transferred, 289 requests
FIX
11.2 MB transferred, 289 requests
Critical::
Page weighs 18.6 MB (11.2 MB transferred)
Warning::
JavaScript is 4.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 4.6 MB
Warning::
Images are 2.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.1 MB
Info::
Fonts are 814 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 814 KB
Info::
CSS is 713 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 713 KB
Warning::
289 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 2.4 g CO2 per page load
11.2 MB / 2.4 MB budget
11.2 MB transferred
289 requests
2.4 g CO2 per page load
JavaScript 4.6 MiB 41%
Other 2.6 MiB 23%
Images 2.1 MiB 19%
Fonts 813.7 KiB 7%
CSS 712.7 KiB 6%
Other 214.0 KiB 2%
HTML 98.8 KiB 1%
Other 50.1 KiB 0%
Other 7.3 KiB 0%
Other 1.5 KiB 0%
Other 1.1 KiB 0%
Other 0 B 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

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

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

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

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

F
JS Execution Cost
Action
5558ms total JS execution
FIX
5558ms total JS execution
Warning::
https://www.twilio.com/etc.clientlibs/twilio-found...: 1651ms CPU time
Warning::
https://www.twilio.com/en-us: 749ms CPU time
Warning::
Unattributable: 596ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5JL...: 371ms CPU time
Warning::
https://euob.powerrobotflower.com/sxp/i/40532d5df9...: 361ms CPU time
Warning::
Third-party scripts: 2881ms (52% of total)

Main Thread Breakdown

Script Evaluation 50% Style & Layout 24% Other 15% Script Parsing & Compilation 5% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/7941.84fb182c4d4df94034ad.js1651ms296ms3ms1st
https://www.twilio.com/en-us749ms109ms52ms1st
Unattributable596ms74ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5JLZ694371ms310ms26ms3rd
https://euob.powerrobotflower.com/sxp/i/40532d5df9f288cf593998bcff0654c9.js361ms309ms6ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-751085158&cx=c&gtm=4e6460281ms264ms13ms3rd
https://www.datadoghq-browser-agent.com/us1/v6/datadog-rum.js243ms200ms6ms3rd
https://js.qualified.com/qualified.js?token=zCnvhQFqeieM7u15220ms140ms48ms3rd
https://assets.adobedtm.com/a62564f453ce/b1b9d7ec982b/launch-29605e749a31.min.js190ms171ms9ms3rd
https://www.datadoghq-browser-agent.com/us1/v6/chunks/recorder-19282efda1d9e1eef3f9-datadog-rum.js182ms181ms1ms3rd

Showing top 10 of 19 scripts

F
JS Bundles
Action
91 scripts, 1.8 MB unused
FIX
91 scripts, 1.8 MB unused
Warning::
https://www.twilio.com/etc.clientlibs/twilio-found...: 603 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://js.qualified.com/qualified.js?token=zCnvhQ...: 267 KB unused (73%)
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-found...: 134 KB unused (65%)
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.
Info::
Total unused JavaScript: 1.8 MB
1883 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/4058.004333870fc70303393c.js868 KB603 KB (70%)✓1st
https://js.qualified.com/qualified.js?token=zCnvhQFqeieM7u15370 KB267 KB (73%)✓3rd
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/5874.c1d494a1c6eb384691be.js233 KB178 KB (77%)✓1st
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-dynamic-modules/resources/4596.8fe2d1526ef31a5a634e.js208 KB134 KB (65%)✓1st
https://www.twilio.com/etc.clientlibs/twilio-com/clientlibs/clientlib-site.lc-4750d7d000b27b3f16919e93029e86fe-lc.min.js125 KB88 KB (71%)✓1st
https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site.lc-0ab2b9c0175216323d0ad407c7fab92e-lc.min.js126 KB80 KB (64%)✓1st
https://www.twilio.com/etc.clientlibs/clientlibs/granite/jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.js100 KB64 KB (65%)✓1st
https://www.googletagmanager.com/gtag/js?id=G-RRP8K4M4F3&cx=c&gtm=4e6460172 KB64 KB (37%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-11875831&cx=c&gtm=4e6460130 KB56 KB (43%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5JLZ694195 KB55 KB (28%)✓3rd

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

B
Third-Party Impact
53% third-party, 0 ms blocking
REVIEW
53% third-party, 0 ms blocking
Warning::
Third-party code accounts for 53% of page weight (6.0 MiB of 11.2 MiB)
Info::
Third-party blocking time is low (0 ms)
47%
53%
First-party Third-party
C
Image Optimization
Action
61 images, 0 KB saveable
REVIEW
61 images, 0 KB saveable
Warning::
https://www.twilio.com/content/dam/twilio-com/glob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/twilio-com/glob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/twilio-com/glob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/twilio-com/glob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/twilio-com/glob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.twilio.com/content/dam/twilio-com/glob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
61 images 2.1 MB
0 oversized -0 KB
45 legacy format
7 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

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
9 fonts (814 KB)
PASS
9 fonts (814 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

814 KB total

Render-blocking

0

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.7 s LCP 4.6 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/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://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/c6e99c98bff939c94d9d.woff2c6e99c98bff939c94d9d.woff2 https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/c6e99c98bff939c94d9d.woff2 — 23.7 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/d014274f22c83861153d.woff2d014274f22c83861153d.woff2 https://www.twilio.com/etc.clientlibs/twilio-foundation/clientlibs/clientlib-site/resources/d014274f22c83861153d.woff2 — 73.9 KiB — 0 ms — font-display: swaphttps://assets.qualified.com/packs/media/Inter-Regular.f1f0c35b.woff2Inter-Regular.f1f0c35b.... https://assets.qualified.com/packs/media/Inter-Regular.f1f0c35b.woff2 — 97.2 KiB — 0 ms — font-display: swaphttps://assets.qualified.com/packs/media/Inter-SemiBold.fcb100c7.woff2Inter-SemiBold.fcb100c7... https://assets.qualified.com/packs/media/Inter-SemiBold.fcb100c7.woff2 — 103.7 KiB — 0 ms — font-display: swaphttps://assets.qualified.com/packs/media/Inter-roman.var.b2129c00.woff2Inter-roman.var.b2129c0... https://assets.qualified.com/packs/media/Inter-roman.var.b2129c00.woff2 — 222.3 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
ee7a891efcbc6ef61942.woff2 woff2 swap
Size 74 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
c6e99c98bff939c94d9d.woff2 woff2 swap
Size 24 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
d014274f22c83861153d.woff2 woff2 swap
Size 74 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Inter-Regular.f1f0c35b.... woff2 swap
Size 97 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Inter-SemiBold.fcb100c7... woff2 swap
Size 104 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Inter-roman.var.b2129c0... woff2 swap
Size 222 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • 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 ~163 KB and ~326 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
HTTP Caching
max-age=300 (5 minutes)
PASS
max-age=300 (5 minutes)
Info::
Cache-Control header is set
Got: max-age=300
Info::
Effective TTL: 5 minutes (max-age=300)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=300

DirectiveValueMeaning
max-age300Cache for 5 minutes
Effective TTL: 300 seconds
Network Waterfall
289 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
52% of JavaScript execution is third-party
First-party Third-party 2881ms · 1530KB · €50/mo
Unattributable
Other
Costly
Execution 596ms
Transfer 0 KB
Monthly Cost €10/mo
Google Tag Manager
Tag Manager
Costly
Execution 371ms
Transfer 195 KB
Unused 28%
Monthly Cost €6/mo
euob.powerrobotflower.com
Other
Costly
Execution 361ms
Transfer 45 KB
Monthly Cost €6/mo
Google Tag Manager
Tag Manager
Costly
Execution 281ms
Transfer 133 KB
Unused 41%
Monthly Cost €5/mo
www.datadoghq-browser-agent.com
Other
Costly
Execution 243ms
Transfer 58 KB
Monthly Cost €4/mo
js.qualified.com
Other
Costly
Execution 220ms
Transfer 370 KB
Unused 73%
Monthly Cost €4/mo
assets.adobedtm.com
Other
Optional
Execution 190ms
Transfer 76 KB
Unused 35%
Monthly Cost €3/mo
www.datadoghq-browser-agent.com
Other
Optional
Execution 182ms
Transfer 9 KB
Monthly Cost €3/mo
Facebook Pixel
Advertising
Optional
Execution 89ms
Transfer 39 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 83ms
Transfer 172 KB
Unused 37%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 75ms
Transfer 147 KB
Unused 36%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 75ms
Transfer 130 KB
Unused 43%
Monthly Cost €1/mo
cdn.siftscience.com
Other
Optional
Execution 61ms
Transfer 20 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 53ms
Transfer 137 KB
Unused 39%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 596ms and costs ~€10/month
  • Google Tag Manager adds 371ms and costs ~€6/month
  • euob.powerrobotflower.com adds 361ms and costs ~€6/month
  • Google Tag Manager adds 281ms and costs ~€5/month
  • www.datadoghq-browser-agent.com adds 243ms and costs ~€4/month
  • js.qualified.com adds 220ms and costs ~€4/month

52% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 596ms 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 371ms 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 361ms 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 281ms 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

www.datadoghq-browser-agent.com takes 243ms 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

js.qualified.com takes 220ms 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

73% of js.qualified.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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