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.
2.89 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.51 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
4.02 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.
5.51 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.
30.67 s
Page Load Progression
FPage Weight BudgetAction3.5 MB transferred, 188 requestsFIX
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
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 CostAction17418ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.f5.com/_next/static/chunks/5005-fb93f13cb032b960.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 6434ms | 2397ms | 2ms | 3rd |
| https://skawa-easyling.cdn.easyling.com/client/63iw3vww/reporter/en-US.js | 2080ms | 1959ms | 87ms | 3rd |
| Unattributable | 1563ms | 38ms | 0ms | 3rd |
| https://www.f5.com/_next/static/chunks/1684-c2a4dfbf19bd03d1.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 1214ms | 984ms | 32ms | 3rd |
| https://www.f5.com/ | 998ms | 17ms | 37ms | 3rd |
| https://www.f5.com/_next/static/chunks/549ca77c-9261eb57d3bef9bc.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 920ms | 1ms | 919ms | 3rd |
| https://www.f5.com/_next/static/chunks/webpack-406f9bfd707c408c.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 775ms | 772ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-89EY6SNB5Y&cx=c>m=4e64f0&bs=ctrl2 | 457ms | 316ms | 90ms | 3rd |
| https://mktg.tags.f5.com/main/prod/utag.sync.js | 409ms | 357ms | 24ms | 3rd |
| https://mktg.tags.f5.com/main/prod/utag.js | 403ms | 335ms | 24ms | 3rd |
Showing top 10 of 22 scripts
FJS BundlesAction92 scripts, 1.9 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.f5.com/_next/static/chunks/549ca77c-9261eb57d3bef9bc.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 1583 KB | 1536 KB (97%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-89EY6SNB5Y&cx=c>m=4e64f0&bs=ctrl2 | 156 KB | 63 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-5322751 | 130 KB | 58 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-11283378&cx=c>m=4e64f0&bs=ctrl2 | 131 KB | 57 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-528895284&cx=c>m=4e64f0&bs=ctrl2 | 144 KB | 57 KB (39%) | ✓ | 3rd |
| https://www.f5.com/_next/static/chunks/8274-5040ec944eb9c798.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 38 KB | 34 KB (90%) | ✓ | 3rd |
| https://www.f5.com/_next/static/chunks/3564-1cb1b7fade2873c4.js?dpl=dpl_42ZhdrupKm1c1MNy1ynneW52JM8C | 35 KB | 28 KB (81%) | ✓ | 3rd |
| https://mktg.tags.f5.com/main/prod/utag.sync.js | 55 KB | 26 KB (47%) | ✓ | 3rd |
| https://mktg.tags.f5.com/main/prod/utag.js | 50 KB | 25 KB (50%) | ✓ | 3rd |
| https://consent.trustarc.com/asset/notice.js/v/v1.7-1729 | 36 KB | 22 KB (62%) | ✓ | 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 InventoryAction188 resources · 3.5 MB · 1.9 MB savings availableFIX
~1.9 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 188 resources | 3.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization38 images, 0 KB saveableREVIEW
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 (169 KB)PASS
Web fonts
8
169 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall188 requests over 44042msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.f5.com www.f5.com | Other | 6434ms | 8 KB | — | $111/mo | Costly |
skawa-easyling.cdn.easyling.com skawa-easyling.cdn.easyling.com | Other | 2080ms | 0 KB | — | $36/mo | Costly |
Unattributable Unattributable | Other | 1563ms | 0 KB | — | $27/mo | Costly |
www.f5.com www.f5.com | Other | 1214ms | 46 KB | — | $21/mo | Costly |
www.f5.com www.f5.com | Other | 998ms | 97 KB | — | $17/mo | Costly |
www.f5.com www.f5.com | Other | 920ms | 1583 KB | 97% | $16/mo | Costly |
www.f5.com www.f5.com | Other | 775ms | 3 KB | — | $13/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 457ms | 156 KB | 40% | $8/mo | Costly |
mktg.tags.f5.com mktg.tags.f5.com | Other | 409ms | 55 KB | 47% | $7/mo | Costly |
mktg.tags.f5.com mktg.tags.f5.com | Other | 403ms | 50 KB | 50% | $7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 362ms | 144 KB | 39% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 304ms | 131 KB | 43% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 303ms | 130 KB | 45% | $5/mo | Costly |
cdn.bizible.com cdn.bizible.com | Other | 211ms | 25 KB | — | $4/mo | Costly |
img.ak.impact-ad.jp img.ak.impact-ad.jp | Other | 173ms | 42 KB | — | $3/mo | Optional |
j.6sc.co j.6sc.co | Other | 166ms | 19 KB | — | $3/mo | Optional |
mktg.tags.f5.com mktg.tags.f5.com | Other | 158ms | 7 KB | — | $3/mo | Optional |
consent.trustarc.com consent.trustarc.com | Other | 156ms | 36 KB | 62% | $3/mo | Optional |
cdn.speedcurve.com cdn.speedcurve.com | Other | 92ms | 12 KB | — | $2/mo | Optional |
static.cloud.coveo.com static.cloud.coveo.com | Other | 84ms | 22 KB | — | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 84ms | 19 KB | — | $1/mo | Optional |
www.f5.com www.f5.com | Other | 72ms | 53 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.f5.com adds 6434ms and costs ~$111/month
- skawa-easyling.cdn.easyling.com adds 2080ms and costs ~$36/month
- Unattributable adds 1563ms and costs ~$27/month
- www.f5.com adds 1214ms and costs ~$21/month
- www.f5.com adds 998ms and costs ~$17/month
- www.f5.com adds 920ms and costs ~$16/month
- www.f5.com adds 775ms and costs ~$13/month
- Google Tag Manager adds 457ms and costs ~$8/month
- mktg.tags.f5.com adds 409ms and costs ~$7/month
- mktg.tags.f5.com adds 403ms and costs ~$7/month
- Google Tag Manager adds 362ms and costs ~$6/month
- Google Tag Manager adds 304ms and costs ~$5/month
- Google Tag Manager adds 303ms and costs ~$5/month
- cdn.bizible.com adds 211ms 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.f5.com takes 6434ms 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
skawa-easyling.cdn.easyling.com takes 2080ms 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 1563ms 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.f5.com takes 1214ms 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.f5.com takes 998ms 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.f5.com takes 920ms 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
97% of www.f5.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.f5.com takes 775ms 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
Google Tag Manager takes 457ms 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
mktg.tags.f5.com takes 409ms 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
mktg.tags.f5.com takes 403ms 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
50% of mktg.tags.f5.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
Google Tag Manager takes 362ms 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
Google Tag Manager takes 304ms 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
Google Tag Manager takes 303ms 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
cdn.bizible.com takes 211ms 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
62% of consent.trustarc.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