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.
1.27 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.71 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
95 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.050
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.61 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.
4.25 s
Page Load Progression
683 ms
1.4 s
2.0 s 2.7 s
3.4 s
4.1 s 4.8 s
5.5 sFPage Weight BudgetAction4.4 MB transferred, 183 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
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
DJS Execution CostAction2086ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.articulate.com/ | 879ms | 132ms | 3ms | 3rd |
| https://www.articulate.com/wp-content/plugins/articulate-block-library/build/metrics-pills/script.js?ver=fab54703ddde2a0e9415 | 301ms | 44ms | 0ms | 3rd |
| https://cmp.osano.com/6oldLSfcehJh2RRl/21f3ebb1-ecce-4f83-a94b-6b2ffca05414/osano.js | 250ms | 161ms | 47ms | 3rd |
| Unattributable | 204ms | 29ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-663970415&cx=c>m=4e64k1 | 139ms | 121ms | 18ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-FX3HXD9SHZ&cx=c>m=4e64k1 | 118ms | 108ms | 10ms | 3rd |
| https://static.ada.support/embed2.a6606d6.js | 99ms | 87ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K9R2NB | 95ms | 80ms | 10ms | 3rd |
DPage Weight InventoryAction183 resources · 4.4 MB · 267 KB savings availableFIX
~266.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 183 resources | 4.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction36 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
CJS BundlesAction52 scripts, 267 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-K9R2NB | 166 KB | 64 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-FX3HXD9SHZ&cx=c>m=4e64k1 | 173 KB | 63 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-663970415&cx=c>m=4e64k1 | 141 KB | 60 KB (43%) | ✓ | 3rd |
| https://static.ada.support/embed2.a6606d6.js | 66 KB | 38 KB (58%) | ✓ | 3rd |
| https://cmp.osano.com/6oldLSfcehJh2RRl/21f3ebb1-ecce-4f83-a94b-6b2ffca05414/osano.js | 80 KB | 21 KB (26%) | ✓ | 3rd |
| https://www.articulate.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 31 KB | 21 KB (68%) | ✓ | 3rd |
| https://www.articulate.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 | 5 KB | — | ✓ | 3rd |
| https://dev.visualwebsiteoptimizer.com/j.php?a=873064&u=https%3A%2F%2Fwww.articulate.com%2F&vn=2.2&ph=1&p=web&st=491.5999994277954&x=true | 11 KB | — | ✓ | 3rd |
| blob:https://www.articulate.com/2a39f0cb-8012-45fe-a8fb-73b4914c105e | -0 KB | — | ✓ | 3rd |
| https://player.vimeo.com/api/player.js | 9 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
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 Loading6 fonts (338 KB)PASS
Web fonts
6
338 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- 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 ~177 KB and ~354 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall183 requests over 3278msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.articulate.com www.articulate.com | Other | 879ms | 0 KB | — | €10/mo | Costly |
www.articulate.com www.articulate.com | Other | 301ms | 1 KB | — | €3/mo | Costly |
cmp.osano.com cmp.osano.com | Other | 250ms | 80 KB | 26% | €3/mo | Costly |
Unattributable Unattributable | Other | 204ms | 0 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 139ms | 141 KB | 43% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 118ms | 173 KB | 36% | €1/mo | Optional |
static.ada.support static.ada.support | Other | 99ms | 66 KB | 58% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 95ms | 166 KB | 39% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.articulate.com adds 879ms and costs ~€10/month
- www.articulate.com adds 301ms and costs ~€3/month
- cmp.osano.com adds 250ms and costs ~€3/month
- Unattributable adds 204ms and costs ~€2/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.articulate.com takes 879ms 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.articulate.com takes 301ms 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
cmp.osano.com takes 250ms 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 204ms 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
58% of static.ada.support'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