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Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
3
REVIEW
5
PASS
11
INFO
2

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

Mobile Desktop
73
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

2.17 s

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

2.73 s

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

6 ms

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.

2.17 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.

2.73 s

Page Load Progression

386 ms
771 ms
1.2 s
1.5 s
1.9 s
2.3 s
2.7 s
3.1 s
Checks
21
11 PASS 5 REVIEW 3 FIX
D
Page Weight Budget
Action
2.3 MB transferred, 23 requests
FIX
2.3 MB transferred, 23 requests
Info::
Page weighs 3.2 MB (2.3 MB transferred)
Warning::
JavaScript is 881 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 881 KB
Info::
CSS is 845 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 845 KB
Info::
Fonts are 425 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 425 KB
Info::
23 HTTP requests
Info::
Estimated 0.47 g CO2 per page load
2.3 MB / 2.4 MB budget
2.3 MB transferred
23 requests
0.47 g CO2 per page load
JavaScript 881.5 KiB 38%
CSS 845.4 KiB 37%
Fonts 424.9 KiB 18%
Images 158.8 KiB 7%
HTML 2.8 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

F
JS Bundles
Action
6 scripts, 550 KB unused
FIX
6 scripts, 550 KB unused
Warning::
https://www.sacco-standard.co.ke/build/assets/ui-v...: 355 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.sacco-standard.co.ke/build/assets/vue-...: 109 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.sacco-standard.co.ke/build/assets/vend...: 53 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.sacco-standard.co.ke/build/assets/app-...: 33 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 550 KB
550 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.sacco-standard.co.ke/build/assets/ui-vendor-DljWAar5.js507 KB355 KB (70%)✓1st
https://www.sacco-standard.co.ke/build/assets/vue-vendor-BqnL6cps.js200 KB109 KB (54%)✓1st
https://www.sacco-standard.co.ke/build/assets/vendor-DenQ01xw.js75 KB53 KB (71%)✓1st
https://www.sacco-standard.co.ke/build/assets/app-4X6cd8ib.js65 KB33 KB (51%)✓1st
https://www.sacco-standard.co.ke/build/assets/PublicLayout-8NOC2vUn.js11 KB—✓1st
https://www.sacco-standard.co.ke/build/assets/Home-BntJS8Qj.js23 KB—✓1st

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

D
Page Weight Inventory
Action
23 resources · 2.3 MB · 550 KB savings available
FIX
23 resources · 2.3 MB · 550 KB savings available
Warning::
Page weight 2.3 MB exceeds 1 MB target by 1.3 MB
Got: 2.3 MB Expected: ≤ 1 MB
Info::
~550 KB of savings available
Info::
5 third-party resources (1% of weight)
Info::
4 resources over 200KB
23 resources · 2.3 MiB · 5 third-party 1.3 MiB over 1MB target
JavaScript 38% · 881.5 KiB
CSS 37% · 845.4 KiB
Font 18% · 424.9 KiB
Image 7% · 158.8 KiB
Document 0% · 2.8 KiB

~549.9 KiB of savings available

Remove unused JavaScript: 549.9 KiB
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
B
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
no-cache, private
REVIEW
no-cache, private
Info::
Cache-Control header is set
Got: no-cache, private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache, private

DirectiveValueMeaning
no-cache—Cache but always revalidate first
private—Only browser cache, not CDN/proxy
A+
Third-Party Impact
1% third-party, 0 ms blocking
PASS
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (31.9 KiB of 2.3 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
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
Image Optimization
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Warning::
https://www.sacco-standard.co.ke/sacco-logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 159 KB
0 oversized -0 KB
2 legacy format
1 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

A+
JS Execution Cost
333ms total JS execution
PASS
333ms total JS execution
Info::
https://www.sacco-standard.co.ke/build/assets/Publ...: 151ms CPU time
Info::
https://www.sacco-standard.co.ke/build/assets/ui-v...: 63ms CPU time
Info::
https://www.sacco-standard.co.ke/: 62ms CPU time
Info::
Unattributable: 57ms CPU time

Main Thread Breakdown

Script Evaluation 42% Other 25% Style & Layout 23% Parse HTML & CSS 5% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.sacco-standard.co.ke/build/assets/PublicLayout-8NOC2vUn.js151ms102ms0ms1st
https://www.sacco-standard.co.ke/build/assets/ui-vendor-DljWAar5.js63ms49ms0ms1st
https://www.sacco-standard.co.ke/62ms1ms0ms1st
Unattributable57ms1ms0ms1st
A+
Font Loading
5 fonts (425 KB)
PASS
5 fonts (425 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

425 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.2 s LCP 2.7 shttps://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2pxiEyp8kv8JHgFVrJJfecnF... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 7.7 KiB — 24 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLEj6Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2 — 7.8 KiB — 27 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLGT9Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2 — 7.6 KiB — 31 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLCz7Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2 — 7.7 KiB — 29 ms — font-display: swaphttps://www.sacco-standard.co.ke/build/assets/materialdesignicons-webfont-Dp5v-WZN.woff2?v=7.4.47materialdesignicons-web... https://www.sacco-standard.co.ke/build/assets/materialdesignicons-webfont-Dp5v-WZN.woff2?v=7.4.47 — 394.0 KiB — 70 ms — font-display: swap
pxiEyp8kv8JHgFVrJJfecnF... woff2 swap
Size 8 KB
Load time 24 ms
Start 491 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLEj6Z1x... woff2 swap
Size 8 KB
Load time 27 ms
Start 693 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLGT9Z1x... woff2 swap
Size 8 KB
Load time 31 ms
Start 693 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLCz7Z1x... woff2 swap
Size 8 KB
Load time 29 ms
Start 694 ms
Risk FOUT — text flashes from fallback to web font
materialdesignicons-web... woff2 swap
Size 394 KB
Load time 70 ms
Start 694 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 ~197 KB and ~394 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+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML uses no-cache -- safe revalidate-on-request policy
PASS
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache, private
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: gzip` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
Network Waterfall
23 requests over 764ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.2 s LCP 2.7 shttps://www.sacco-standard.co.ke// https://www.sacco-standard.co.ke/ — 200 — 2.8 KiB — 142 ms — http/1.1https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swapfonts.googleapis.com/css2?family=Po... https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap — 200 — 1.0 KiB — 87 ms — h2https://www.sacco-standard.co.ke/build/assets/app-CQcGvD0U.css/build/assets/app-CQcGvD0U.css https://www.sacco-standard.co.ke/build/assets/app-CQcGvD0U.css — 200 — 5.0 KiB — 37 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/ui-vendor-C4I5TIbz.css/build/assets/ui-vendor-C4I5TIbz.cs... https://www.sacco-standard.co.ke/build/assets/ui-vendor-C4I5TIbz.css — 200 — 820.9 KiB — 199 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/app-DPZLvOyI.css/build/assets/app-DPZLvOyI.css https://www.sacco-standard.co.ke/build/assets/app-DPZLvOyI.css — 200 — 6.3 KiB — 70 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/app-4X6cd8ib.js/build/assets/app-4X6cd8ib.js https://www.sacco-standard.co.ke/build/assets/app-4X6cd8ib.js — 200 — 65.1 KiB — 160 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/vendor-DenQ01xw.js/build/assets/vendor-DenQ01xw.js https://www.sacco-standard.co.ke/build/assets/vendor-DenQ01xw.js — 200 — 74.8 KiB — 159 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/vue-vendor-BqnL6cps.js/build/assets/vue-vendor-BqnL6cps.j... https://www.sacco-standard.co.ke/build/assets/vue-vendor-BqnL6cps.js — 200 — 200.2 KiB — 203 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/ui-vendor-DljWAar5.js/build/assets/ui-vendor-DljWAar5.js https://www.sacco-standard.co.ke/build/assets/ui-vendor-DljWAar5.js — 200 — 507.5 KiB — 264 ms — http/1.1https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 200 — 7.7 KiB — 24 ms — h3https://www.sacco-standard.co.ke/build/assets/PublicLayout-8NOC2vUn.js/build/assets/PublicLayout-8NOC2vUn... https://www.sacco-standard.co.ke/build/assets/PublicLayout-8NOC2vUn.js — 200 — 10.9 KiB — 34 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/ui-vendor-C4I5TIbz.css/build/assets/ui-vendor-C4I5TIbz.cs... https://www.sacco-standard.co.ke/build/assets/ui-vendor-C4I5TIbz.css — 200 — 0 B — 5 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/PublicLayout-BsxAw9Uj.css/build/assets/PublicLayout-BsxAw9Uj... https://www.sacco-standard.co.ke/build/assets/PublicLayout-BsxAw9Uj.css — 200 — 4.0 KiB — 35 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/app-CQcGvD0U.css/build/assets/app-CQcGvD0U.css https://www.sacco-standard.co.ke/build/assets/app-CQcGvD0U.css — 200 — 0 B — 3 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/Home-BntJS8Qj.js/build/assets/Home-BntJS8Qj.js https://www.sacco-standard.co.ke/build/assets/Home-BntJS8Qj.js — 200 — 23.0 KiB — 35 ms — http/1.1https://www.sacco-standard.co.ke/build/assets/Home-v2DqYPZH.css/build/assets/Home-v2DqYPZH.css https://www.sacco-standard.co.ke/build/assets/Home-v2DqYPZH.css — 200 — 8.2 KiB — 35 ms — http/1.1https://www.sacco-standard.co.ke/sacco-logo.png/sacco-logo.png https://www.sacco-standard.co.ke/sacco-logo.png — 200 — 119.8 KiB — 35 ms — http/1.1https://www.sacco-standard.co.ke/sacco-landing.png/sacco-landing.png https://www.sacco-standard.co.ke/sacco-landing.png — 200 — 39.0 KiB — 34 ms — http/1.1https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2 — 200 — 7.8 KiB — 27 ms — h3https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2 — 200 — 7.6 KiB — 31 ms — h3https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2 — 200 — 7.7 KiB — 29 ms — h3https://www.sacco-standard.co.ke/build/assets/materialdesignicons-webfont-Dp5v-WZN.woff2?v=7.4.47/build/assets/materialdesignicons-w... https://www.sacco-standard.co.ke/build/assets/materialdesignicons-webfont-Dp5v-WZN.woff2?v=7.4.47 — 200 — 394.0 KiB — 70 ms — http/1.1https://www.sacco-standard.co.ke/sacco-logo.png/sacco-logo.png https://www.sacco-standard.co.ke/sacco-logo.png — 200 — 0 B — 6 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
4 images, 397 KB total, 119 KB wasted
INFO

Image Optimization Audit

Total Images

4

Total Size

397 KB

Oversized

1

Wasted

119 KB

4 missing dimensions 1 missing lazy loading
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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