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Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
5
REVIEW
6
PASS
12
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.
93
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.
83
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.

3.21 s

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

22.24 s

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

2.88 s

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

0.010

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

7.55 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.

22.24 s

Page Load Progression

425 ms
850 ms
1.3 s
1.7 s
2.1 s
2.5 s
3.0 s
3.4 s
Checks
25
12 PASS 6 REVIEW 5 FIX
F
Page Weight Budget
Action
3.3 MB transferred, 24 requests
FIX
3.3 MB transferred, 24 requests
Warning::
Page weighs 9.2 MB (3.3 MB transferred)
Warning::
JavaScript is 3.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.1 MB
Info::
24 HTTP requests
Info::
Estimated 0.69 g CO2 per page load
3.3 MB / 2.4 MB budget
3.3 MB transferred
24 requests
0.69 g CO2 per page load
JavaScript 3.1 MiB 94%
CSS 170.1 KiB 5%
Fonts 15.6 KiB 0%
Other 15.2 KiB 0%
Images 2.7 KiB 0%
HTML 1.6 KiB 0%
Other 763 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

F
JS Execution Cost
Action
4809ms total JS execution
FIX
4809ms total JS execution
Warning::
https://portal.kumorai.io/main.b2e477fcccefdded4d1...: 1310ms CPU time
Warning::
https://portal.kumorai.io/61.9350838b2192087324ce....: 932ms CPU time
Warning::
https://portal.kumorai.io/scripts.1997f9227ae5e563...: 838ms CPU time
Warning::
Unattributable: 493ms CPU time
Warning::
https://portal.kumorai.io/: 440ms CPU time

Main Thread Breakdown

Script Evaluation 50% Script Parsing & Compilation 27% Other 13% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
https://portal.kumorai.io/main.b2e477fcccefdded4d1f.js1310ms792ms505ms1st
https://portal.kumorai.io/61.9350838b2192087324ce.js932ms651ms218ms1st
https://portal.kumorai.io/scripts.1997f9227ae5e5638520.js838ms519ms264ms1st
Unattributable493ms6ms0ms1st
https://portal.kumorai.io/440ms6ms1ms1st
https://portal.kumorai.io/7.43f8a0cde085b9746148.js274ms203ms64ms1st
https://portal.kumorai.io/60.a217cc34844e8c4d3b53.js179ms119ms48ms1st
https://portal.kumorai.io/polyfills.be9a603a93183832c964.js178ms152ms6ms1st
https://portal.kumorai.io/78.f2a42a3cec7ea243eda3.js166ms3ms162ms1st
F
JS Bundles
Action
15 scripts, 2.0 MB unused
FIX
15 scripts, 2.0 MB unused
Warning::
https://portal.kumorai.io/main.b2e477fcccefdded4d1...: 742 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://portal.kumorai.io/61.9350838b2192087324ce....: 518 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://portal.kumorai.io/scripts.1997f9227ae5e563...: 369 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://portal.kumorai.io/78.f2a42a3cec7ea243eda3....: 161 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://portal.kumorai.io/7.43f8a0cde085b9746148.j...: 127 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 2.0 MB
2002 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://portal.kumorai.io/main.b2e477fcccefdded4d1f.js1137 KB742 KB (65%)✓1st
https://portal.kumorai.io/61.9350838b2192087324ce.js518 KB518 KB (100%)✓1st
https://portal.kumorai.io/scripts.1997f9227ae5e5638520.js601 KB369 KB (61%)✓1st
https://portal.kumorai.io/78.f2a42a3cec7ea243eda3.js303 KB161 KB (53%)✓1st
https://portal.kumorai.io/7.43f8a0cde085b9746148.js154 KB127 KB (83%)✓1st
https://portal.kumorai.io/3.50ba4308c9bfed7c86de.js119 KB85 KB (71%)✓1st
https://portal.kumorai.io/1.7213255bccc546f0a81d.js10 KB—✓1st
https://portal.kumorai.io/assets/sql-formatter/sql-formatter.min.js15 KB—✓1st
https://portal.kumorai.io/0.b982a13c099feaedc6f0.js11 KB—✓1st
https://portal.kumorai.io/common.83ab2645a94cf3b65242.js8 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

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
Page Weight Inventory
Action
24 resources · 3.3 MB · 2.0 MB savings available
FIX
24 resources · 3.3 MB · 2.0 MB savings available
Warning::
Page weight 3.3 MB exceeds 1 MB target by 2.3 MB
Got: 3.3 MB Expected: ≤ 1 MB
Info::
~2.0 MB of savings available
Info::
5 third-party resources (1% of weight)
Info::
5 resources over 200KB
24 resources · 3.3 MiB · 5 third-party 2.3 MiB over 1MB target
JavaScript 94% · 3.1 MiB
CSS 5% · 170.1 KiB
Image 1% · 17.9 KiB
Font 0% · 15.6 KiB
Document 0% · 1.6 KiB
Other 0% · 763 B

~2.0 MiB of savings available

Remove unused JavaScript: 2.0 MiB
D
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.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

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

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
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
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.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
11 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
Warning::
Total JS execution time is 4.8 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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 (17.7 KiB of 3.3 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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Warning::
https://portal.kumorai.io/assets/kumorailogo/Kumor... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
1 images 3 KB
0 oversized -0 KB
1 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+
Font Loading
2 fonts (16 KB)
PASS
2 fonts (16 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

16 KB total

Render-blocking

0

of 2

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 16.0 s 18.0 s 20.0 s 22.0 s FCP 3.2 s LCP 22.2 shttps://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2pxiEyp8kv8JHgFVrJJfecnF... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 7.7 KiB — 5 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLEj6Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2 — 7.8 KiB — 5 ms — font-display: swap
pxiEyp8kv8JHgFVrJJfecnF... woff2 swap
Size 8 KB
Load time 5 ms
Start 969 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLEj6Z1x... woff2 swap
Size 8 KB
Load time 5 ms
Start 2.8 s
Risk FOUT — text flashes from fallback to web font
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 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+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
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
A
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Info::
1 `@import` rule(s) in inline `<style>` blocks -- chains an extra round-trip
Each `@import` in CSS forces a serial dependency: the parent stylesheet must download and parse before the browser even knows which URL to fetch next. This used to be catastrophic on HTTP/1.1; HTTP/2 and HTTP/3 multiplexing make it less painful but still strictly worse than declaring `<link rel="stylesheet">` siblings. Replace `@import url(...)` with `<link rel="stylesheet" href="...">` in HTML so the browser discovers and fetches in parallel.
Network Waterfall
24 requests over 3353ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s FCP 3.2 s LCP 22.2 shttps://portal.kumorai.io// https://portal.kumorai.io/ — 200 — 1.6 KiB — 468 ms — h2https://fonts.googleapis.com/icon?family=Material+Iconsfonts.googleapis.com/icon?family=Ma... https://fonts.googleapis.com/icon?family=Material+Icons — 200 — 423 B — 120 ms — h2https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swapfonts.googleapis.com/css2?family=Po... https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap — 200 — 1006 B — 119 ms — h2https://portal.kumorai.io/assets/sql-formatter/sql-formatter.min.js/assets/sql-formatter/sql-formatter... https://portal.kumorai.io/assets/sql-formatter/sql-formatter.min.js — 200 — 14.7 KiB — 121 ms — h2https://portal.kumorai.io/styles.185da9dbc3624d954685.css/styles.185da9dbc3624d954685.css https://portal.kumorai.io/styles.185da9dbc3624d954685.css — 200 — 168.7 KiB — 458 ms — h2https://portal.kumorai.io/runtime.3bed62c1df71dc36c41a.js/runtime.3bed62c1df71dc36c41a.js https://portal.kumorai.io/runtime.3bed62c1df71dc36c41a.js — 200 — 3.4 KiB — 336 ms — h2https://portal.kumorai.io/polyfills.be9a603a93183832c964.js/polyfills.be9a603a93183832c964.js https://portal.kumorai.io/polyfills.be9a603a93183832c964.js — 200 — 15.1 KiB — 332 ms — h2https://portal.kumorai.io/scripts.1997f9227ae5e5638520.js/scripts.1997f9227ae5e5638520.js https://portal.kumorai.io/scripts.1997f9227ae5e5638520.js — 200 — 601.4 KiB — 684 ms — h2https://portal.kumorai.io/main.b2e477fcccefdded4d1f.js/main.b2e477fcccefdded4d1f.js https://portal.kumorai.io/main.b2e477fcccefdded4d1f.js — 200 — 1.1 MiB — 782 ms — h2https://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 — 5 ms — h3https://portal.kumorai.io/0.b982a13c099feaedc6f0.js/0.b982a13c099feaedc6f0.js https://portal.kumorai.io/0.b982a13c099feaedc6f0.js — 200 — 11.4 KiB — 119 ms — h2https://portal.kumorai.io/1.7213255bccc546f0a81d.js/1.7213255bccc546f0a81d.js https://portal.kumorai.io/1.7213255bccc546f0a81d.js — 200 — 10.0 KiB — 120 ms — h2https://portal.kumorai.io/3.50ba4308c9bfed7c86de.js/3.50ba4308c9bfed7c86de.js https://portal.kumorai.io/3.50ba4308c9bfed7c86de.js — 200 — 119.4 KiB — 176 ms — h2https://portal.kumorai.io/7.43f8a0cde085b9746148.js/7.43f8a0cde085b9746148.js https://portal.kumorai.io/7.43f8a0cde085b9746148.js — 200 — 154.0 KiB — 192 ms — h2https://portal.kumorai.io/common.83ab2645a94cf3b65242.js/common.83ab2645a94cf3b65242.js https://portal.kumorai.io/common.83ab2645a94cf3b65242.js — 200 — 7.8 KiB — 160 ms — h2https://portal.kumorai.io/67.b3fa4b4d1e377527d9e0.js/67.b3fa4b4d1e377527d9e0.js https://portal.kumorai.io/67.b3fa4b4d1e377527d9e0.js — 200 — 9.2 KiB — 160 ms — h2https://portal.kumorai.io/60.a217cc34844e8c4d3b53.js/60.a217cc34844e8c4d3b53.js https://portal.kumorai.io/60.a217cc34844e8c4d3b53.js — 200 — 214.3 KiB — 150 ms — h2https://portal.kumorai.io/83.1671c0bd09f000035f96.js/83.1671c0bd09f000035f96.js https://portal.kumorai.io/83.1671c0bd09f000035f96.js — 200 — 23.3 KiB — 119 ms — h2https://portal.kumorai.io/61.9350838b2192087324ce.js/61.9350838b2192087324ce.js https://portal.kumorai.io/61.9350838b2192087324ce.js — 200 — 518.3 KiB — 292 ms — h2https://portal.kumorai.io/78.f2a42a3cec7ea243eda3.js/78.f2a42a3cec7ea243eda3.js https://portal.kumorai.io/78.f2a42a3cec7ea243eda3.js — 200 — 302.9 KiB — 250 ms — h2https://api.kumorai.io/api/Account/Directoriesapi.kumorai.io/api/Account/Director... https://api.kumorai.io/api/Account/Directories — 200 — 763 B — 580 ms — http/1.1https://portal.kumorai.io/assets/kumorailogo/Kumorai-Logo-Icon.svg/assets/kumorailogo/Kumorai-Logo-Ic... https://portal.kumorai.io/assets/kumorailogo/Kumorai-Logo-Icon.svg — 200 — 2.7 KiB — 118 ms — h2https://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 — 5 ms — h3https://portal.kumorai.io/favicon.ico/favicon.ico https://portal.kumorai.io/favicon.ico — 200 — 15.2 KiB — 118 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
2 images, 5 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

2

Total Size

5 KB

2 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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