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Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
2
REVIEW
8
PASS
13
INFO
3

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

Mobile Desktop
58
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
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.
61
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.

3.97 s

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

5.56 s

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

212 ms

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

0.106

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

7.17 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.

11.15 s

Page Load Progression

616 ms
1.2 s
1.8 s
2.5 s
3.1 s
3.7 s
4.3 s
4.9 s
Checks
26
13 PASS 8 REVIEW 2 FIX
D
JS Bundles
Action
3 scripts, 412 KB unused
FIX
3 scripts, 412 KB unused
Warning::
https://www.techguys.nz/web/assets/1/f2dc51a/web.a...: 412 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 412 KB
412 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.techguys.nz/web/assets/1/f2dc51a/web.assets_frontend_lazy.min.js709 KB412 KB (58%)✓1st
https://www.techguys.nz/web/assets/1/053dbd4/web.assets_frontend_minimal.min.js9 KB—✓1st
https://download.odoo.com/js/plausi_saas.js1 KB—✓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

F
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.

No Cache-Control header

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

B
Page Weight Budget
1.3 MB transferred, 25 requests
REVIEW
1.3 MB transferred, 25 requests
Info::
Page weighs 3.6 MB (1.3 MB transferred)
Warning::
JavaScript is 719 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 719 KB
Info::
25 HTTP requests
Info::
Estimated 0.28 g CO2 per page load
1.3 MB / 2.4 MB budget
1.3 MB transferred
25 requests
0.28 g CO2 per page load
JavaScript 719.1 KiB 53%
Images 304.9 KiB 22%
Fonts 140.2 KiB 10%
CSS 128.9 KiB 9%
Other 65.5 KiB 5%
HTML 8.0 KiB 1%
Other 534 B 0%
Other 219 B 0%
0 2.4 MB 4.9 MB
Under 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

C
JS Execution Cost
Action
1266ms total JS execution
REVIEW
1266ms total JS execution
Warning::
https://www.techguys.nz/web/assets/1/f2dc51a/web.a...: 631ms CPU time
Warning::
https://www.techguys.nz/: 391ms CPU time
Info::
Unattributable: 192ms CPU time
Info::
https://www.techguys.nz/web/assets/1/fadead3/web.a...: 52ms CPU time
Info::
Third-party scripts: 192ms (15% of total)

Main Thread Breakdown

Script Evaluation 37% Other 27% Style & Layout 14% Script Parsing & Compilation 13% Rendering 3% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.techguys.nz/web/assets/1/f2dc51a/web.assets_frontend_lazy.min.js631ms438ms172ms1st
https://www.techguys.nz/391ms21ms2ms1st
Unattributable192ms6ms0ms3rd
https://www.techguys.nz/web/assets/1/fadead3/web.assets_frontend.min.css52ms0ms0ms1st
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.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
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.
C
Page Weight Inventory
Action
25 resources · 1.3 MB · 412 KB savings available
REVIEW
25 resources · 1.3 MB · 412 KB savings available
Warning::
Page weight 1.3 MB exceeds 1 MB target by 343 KB
Got: 1.3 MB Expected: ≤ 1 MB
Info::
~412 KB of savings available
Info::
10 third-party resources (5% of weight)
Info::
1 resources over 200KB
25 resources · 1.3 MiB · 10 third-party 343.4 KiB over 1MB target
JavaScript 53% · 719.1 KiB
Image 27% · 370.5 KiB
Font 10% · 140.2 KiB
CSS 9% · 128.9 KiB
Document 1% · 8.0 KiB
Other 0% · 753 B

~412.1 KiB of savings available

Remove unused JavaScript: 412.1 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
5% third-party, 0 ms blocking
PASS
5% third-party, 0 ms blocking
Info::
Third-party code accounts for 5% of page weight (67.6 KiB of 1.3 MiB)
Info::
Third-party blocking time is low (0 ms)
95%
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
11 images, 0 KB saveable
PASS
11 images, 0 KB saveable
Warning::
https://www.techguys.nz/web/image/865-b7bd6503/pex... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.techguys.nz/web/image/866-02636d14/pex... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.techguys.nz/web/image/875-4f63b3c0/pex... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.techguys.nz/web/image/874-59b8ef0d/pex... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.techguys.nz/web/image/864-8d634d07/pex... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.techguys.nz/web/image/877-5d36913e/pex... 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.
11 images 305 KB
0 oversized -0 KB
0 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

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.

A+
Font Loading
5 fonts (140 KB)
PASS
5 fonts (140 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

140 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 4.0 s LCP 5.6 shttps://www.techguys.nz/web/static/src/libs/fontawesome/fonts/fontawesome-webfont.woff2?v=4.7.0fontawesome-webfont.woff2 https://www.techguys.nz/web/static/src/libs/fontawesome/fonts/fontawesome-webfont.woff2?v=4.7.0 — 75.7 KiB — 633 ms — font-display: swaphttps://fonts.gstatic.com/s/sourcesanspro/v23/6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7lujVj9w.woff26xK3dSBYKcSV-LCoeQqfX1R... https://fonts.gstatic.com/s/sourcesanspro/v23/6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7lujVj9w.woff2 — 14.5 KiB — 83 ms — font-display: swaphttps://fonts.gstatic.com/s/assistant/v24/2sDcZGJYnIjSi6H75xkzaGW5Kb8VZA.woff22sDcZGJYnIjSi6H75xkzaGW... https://fonts.gstatic.com/s/assistant/v24/2sDcZGJYnIjSi6H75xkzaGW5Kb8VZA.woff2 — 21.6 KiB — 88 ms — font-display: swaphttps://fonts.gstatic.com/s/sourcesanspro/v23/6xKwdSBYKcSV-LCoeQqfX1RYOo3qPZZMkids18S0xR41.woff26xKwdSBYKcSV-LCoeQqfX1R... https://fonts.gstatic.com/s/sourcesanspro/v23/6xKwdSBYKcSV-LCoeQqfX1RYOo3qPZZMkids18S0xR41.woff2 — 13.9 KiB — 81 ms — font-display: swaphttps://fonts.gstatic.com/s/sourcesanspro/v23/6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdu3cOWxw.woff26xKydSBYKcSV-LCoeQqfX1R... https://fonts.gstatic.com/s/sourcesanspro/v23/6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdu3cOWxw.woff2 — 14.5 KiB — 57 ms — font-display: swap
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 633 ms
Start 980 ms
Risk FOUT — text flashes from fallback to web font
6xK3dSBYKcSV-LCoeQqfX1R... woff2 swap
Size 15 KB
Load time 83 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
2sDcZGJYnIjSi6H75xkzaGW... woff2 swap
Size 22 KB
Load time 88 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
6xKwdSBYKcSV-LCoeQqfX1R... woff2 swap
Size 14 KB
Load time 81 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
6xKydSBYKcSV-LCoeQqfX1R... woff2 swap
Size 14 KB
Load time 57 ms
Start 2.5 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
1
dns-prefetch
—
prefetch
—

2 resource hints configured

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
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
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.
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+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
25 requests over 3881ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 4.0 s LCP 5.6 shttps://www.techguys.nz// https://www.techguys.nz/ — 200 — 8.0 KiB — 968 ms — h2https://www.techguys.nz/web/static/src/libs/fontawesome/fonts/fontawesome-webfont.woff2?v=4.7.0/web/static/src/libs/fontawesome/fo... https://www.techguys.nz/web/static/src/libs/fontawesome/fonts/fontawesome-webfont.woff2?v=4.7.0 — 200 — 75.7 KiB — 633 ms — h2https://www.techguys.nz/web/assets/1/fadead3/web.assets_frontend.min.css/web/assets/1/fadead3/web.assets_fr... https://www.techguys.nz/web/assets/1/fadead3/web.assets_frontend.min.css — 200 — 126.9 KiB — 1.3 s — h2https://www.techguys.nz/web/assets/1/053dbd4/web.assets_frontend_minimal.min.js/web/assets/1/053dbd4/web.assets_fr... https://www.techguys.nz/web/assets/1/053dbd4/web.assets_frontend_minimal.min.js — 200 — 8.7 KiB — 625 ms — h2https://download.odoo.com/js/plausi_saas.jsdownload.odoo.com/js/plausi_saas.js https://download.odoo.com/js/plausi_saas.js — 200 — 964 B — 120 ms — h2https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,300i,400,400i,700,700i&display=swapfonts.googleapis.com/css?family=Sou... https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,300i,400,400i,700,700i&display=swap — 200 — 1.1 KiB — 166 ms — h2https://fonts.googleapis.com/css?family=Assistant:300,300i,400,400i,700,700i&display=swapfonts.googleapis.com/css?family=Ass... https://fonts.googleapis.com/css?family=Assistant:300,300i,400,400i,700,700i&display=swap — 200 — 960 B — 165 ms — h2data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='…www.w3.org/2000/svg' viewBox='0 0 3... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3…www.w3.org/2000/svg' viewBox='0 0 1... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3… — 200 — 0 B — 0 ms — datahttps://www.techguys.nz/web/image/947-c45d0d51/pexels-500photos-com-15338-93405.webp/web/image/947-c45d0d51/pexels-500p... https://www.techguys.nz/web/image/947-c45d0d51/pexels-500photos-com-15338-93405.webp — 200 — 31.4 KiB — 324 ms — h2https://www.techguys.nz/web/image/website/1/logo/The%20Tech%20Guys%20-%20Palmerston%20North?unique=06fe861/web/image/website/1/logo/The%20Tec... https://www.techguys.nz/web/image/website/1/logo/The%20Tech%20Guys%20-%20Palmerston%20North?unique=06fe861 — 200 — 3.4 KiB — 324 ms — h2https://www.techguys.nz/web/image/865-b7bd6503/pexels-cottonbro-4705628.webp/web/image/865-b7bd6503/pexels-cott... https://www.techguys.nz/web/image/865-b7bd6503/pexels-cottonbro-4705628.webp — 200 — 41.9 KiB — 325 ms — h2https://www.techguys.nz/web/image/864-8d634d07/pexels-pixabay-159304.webp/web/image/864-8d634d07/pexels-pixa... https://www.techguys.nz/web/image/864-8d634d07/pexels-pixabay-159304.webp — 200 — 17.8 KiB — 327 ms — h2https://www.techguys.nz/web/image/866-02636d14/pexels-josh-sorenson-1714208.webp/web/image/866-02636d14/pexels-josh... https://www.techguys.nz/web/image/866-02636d14/pexels-josh-sorenson-1714208.webp — 200 — 21.7 KiB — 332 ms — h2https://www.techguys.nz/web/image/875-4f63b3c0/pexels-andrea-piacquadio-3807811-cropped.webp/web/image/875-4f63b3c0/pexels-andr... https://www.techguys.nz/web/image/875-4f63b3c0/pexels-andrea-piacquadio-3807811-cropped.webp — 200 — 97.1 KiB — 332 ms — h2https://fonts.gstatic.com/s/sourcesanspro/v23/6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7lujVj9w.woff2fonts.gstatic.com/s/sourcesanspro/v... https://fonts.gstatic.com/s/sourcesanspro/v23/6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7lujVj9w.woff2 — 200 — 14.5 KiB — 83 ms — h3https://fonts.gstatic.com/s/assistant/v24/2sDcZGJYnIjSi6H75xkzaGW5Kb8VZA.woff2fonts.gstatic.com/s/assistant/v24/2... https://fonts.gstatic.com/s/assistant/v24/2sDcZGJYnIjSi6H75xkzaGW5Kb8VZA.woff2 — 200 — 21.6 KiB — 88 ms — h3https://fonts.gstatic.com/s/sourcesanspro/v23/6xKwdSBYKcSV-LCoeQqfX1RYOo3qPZZMkids18S0xR41.woff2fonts.gstatic.com/s/sourcesanspro/v... https://fonts.gstatic.com/s/sourcesanspro/v23/6xKwdSBYKcSV-LCoeQqfX1RYOo3qPZZMkids18S0xR41.woff2 — 200 — 13.9 KiB — 81 ms — h3https://fonts.gstatic.com/s/sourcesanspro/v23/6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdu3cOWxw.woff2fonts.gstatic.com/s/sourcesanspro/v... https://fonts.gstatic.com/s/sourcesanspro/v23/6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdu3cOWxw.woff2 — 200 — 14.5 KiB — 57 ms — h3https://saas-analytics.odoo.com/api/eventsaas-analytics.odoo.com/api/event https://saas-analytics.odoo.com/api/event — 202 — 219 B — 151 ms — h2https://www.techguys.nz/web/image/877-5d36913e/pexels-pixabay-270348.webp/web/image/877-5d36913e/pexels-pixa... https://www.techguys.nz/web/image/877-5d36913e/pexels-pixabay-270348.webp — 200 — 69.9 KiB — 535 ms — h2https://www.techguys.nz/web/image/874-59b8ef0d/pexels-brett-sayles-2881232.webp/web/image/874-59b8ef0d/pexels-bret... https://www.techguys.nz/web/image/874-59b8ef0d/pexels-brett-sayles-2881232.webp — 200 — 21.6 KiB — 582 ms — h2https://www.techguys.nz/web/assets/1/f2dc51a/web.assets_frontend_lazy.min.js/web/assets/1/f2dc51a/web.assets_fr... https://www.techguys.nz/web/assets/1/f2dc51a/web.assets_frontend_lazy.min.js — 200 — 709.4 KiB — 678 ms — h2https://www.techguys.nz/web/image/website/1/favicon?unique=06fe861/web/image/website/1/favicon?unique... https://www.techguys.nz/web/image/website/1/favicon?unique=06fe861 — 200 — 65.5 KiB — 676 ms — h2https://www.techguys.nz/website/translations/6aa4024c330f9b2c7a4f23581e45efb99dff6e00?lang=en_NZ/website/translations/6aa4024c330f9... https://www.techguys.nz/website/translations/6aa4024c330f9b2c7a4f23581e45efb99dff6e00?lang=en_NZ — 200 — 534 B — 323 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
15% of JavaScript execution is third-party
First-party Third-party 192ms · 0KB · NZ$3/mo
Unattributable
Other
Optional
Execution 192ms
Transfer 0 KB
Monthly Cost NZ$3/mo

How third-party costs are calculated

Image Optimization
12 images, 274 KB total, 178 KB wasted
INFO

Image Optimization Audit

Total Images

12

Total Size

274 KB

Oversized

4

Wasted

178 KB

10 missing alt text 10 missing dimensions
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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