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https://grind.co.uk

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
4
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
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.

6.63 s

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

31.67 s

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

4.87 s

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

0.487

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

25.01 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.

44.55 s

Page Load Progression

3.0 s
6.0 s
9.0 s
12.0 s
15.0 s
18.0 s
21.0 s
24.0 s
Checks
16
8 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
12.4 MB transferred, 520 requests
FIX
12.4 MB transferred, 520 requests
Critical::
Page weighs 25.2 MB (12.4 MB transferred)
Warning::
JavaScript is 3.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.4 MB
Warning::
Images are 3.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.1 MB
Info::
Fonts are 217 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 217 KB
Warning::
520 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 2.6 g CO2 per page load
12.4 MB / 2.4 MB budget
12.4 MB transferred
520 requests
2.6 g CO2 per page load
Other 4.1 MiB 33%
JavaScript 3.4 MiB 27%
Images 3.1 MiB 25%
Other 1.2 MiB 10%
Fonts 216.6 KiB 2%
HTML 178.4 KiB 1%
CSS 111.9 KiB 1%
Other 78.0 KiB 1%
Other 23.0 KiB 0%
Other 14.2 KiB 0%
Other 1.6 KiB 0%
Other 0 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

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

F
JS Execution Cost
Action
39438ms total JS execution
FIX
39438ms total JS execution
Warning::
https://grind.co.uk/pages/en-us: 14360ms CPU time
Warning::
Unattributable: 4599ms CPU time
Warning::
https://grind.co.uk/cdn/shop/t/207/assets/theme.js...: 3962ms CPU time
Warning::
https://grind.co.uk/cdn/shop/t/207/assets/vendor.j...: 2358ms CPU time
Warning::
https://cdn.optimizely.com/js/25879780104.js: 1360ms CPU time
Info::
Third-party scripts: 14822ms (38% of total)

Main Thread Breakdown

Script Evaluation 41% Other 33% Style & Layout 10% Rendering 9% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://grind.co.uk/pages/en-us14360ms208ms58ms1st
Unattributable4599ms170ms0ms3rd
https://grind.co.uk/cdn/shop/t/207/assets/theme.js?v1.0.1&v=702342207583004109817751412793962ms3539ms29ms1st
https://grind.co.uk/cdn/shop/t/207/assets/vendor.js?v=300990298744210817917664111892358ms1570ms101ms1st
https://cdn.optimizely.com/js/25879780104.js1360ms787ms130ms3rd
https://grind.co.uk/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js1353ms1012ms38ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-MGRCJHV1067ms980ms58ms3rd
https://static.klaviyo.com/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc073a286a0296d9f7/1011.fa12d00c7a08724d2839.js1044ms819ms3ms3rd
https://scripts.clarity.ms/0.8.59/clarity.js952ms690ms9ms3rd
https://assets.gorgias.chat/build/static/js/279.6ba6eb825556cdb4.js652ms589ms31ms3rd

Showing top 10 of 43 scripts

F
JS Bundles
Action
246 scripts, 923 KB unused
FIX
246 scripts, 923 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-794...: 105 KB unused (74%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-794...: 105 KB unused (74%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://grind.co.uk/cdn/shop/t/207/assets/wizard.j...: 81 KB unused (29%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://grind.co.uk/cdn/shop/t/207/assets/vendor.j...: 57 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://grind.co.uk/cdn/shop/t/207/assets/vendor.j...: 57 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 923 KB
923 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=AW-794865512&cx=c&gtm=4e6461143 KB105 KB (74%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-794865512&cx=c&gtm=4e6461143 KB105 KB (74%)✓3rd
https://grind.co.uk/cdn/shop/t/207/assets/wizard.js?v11775636009511281 KB81 KB (29%)✓1st
https://grind.co.uk/cdn/shop/t/207/assets/vendor.js?v=3009902987442108179176641118982 KB57 KB (69%)✓1st
https://grind.co.uk/cdn/shop/t/207/assets/vendor.js?v=300990298744210817917664111890 KB57 KB (69%)✓1st
https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMw.js110 KB57 KB (52%)✓3rd
https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMw.js110 KB57 KB (52%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-17893060665&cx=c&gtm=4e6461143 KB56 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/destination?id=AW-794865512&cx=c&gtm=4e6461143 KB55 KB (38%)✓3rd
https://www.googletagmanager.com/gtag/destination?id=AW-794865512&cx=c&gtm=4e6461143 KB55 KB (38%)✓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

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
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

No Cache-Control header

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

B
Third-Party Impact
59% third-party, 0 ms blocking
REVIEW
59% third-party, 0 ms blocking
Warning::
Third-party code accounts for 59% of page weight (7.3 MiB of 12.4 MiB)
Info::
Third-party blocking time is low (0 ms)
41%
59%
First-party Third-party
C
Image Optimization
Action
94 images, 0 KB saveable
REVIEW
94 images, 0 KB saveable
Warning::
https://grind.co.uk/cdn/shop/files/Homepage_Block3... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/Homepage_Block4... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/guardian_140x.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/pods-tin-lifest... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/Grind-TVC_Endfr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/stylist_140x.pn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/Financial_Times... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/es_c2c6557e-425... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/new-packaging-l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/seasonal-lifest... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/vogue_130x.png?... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/gq_f2ed0c86-5f8... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://d3k81ch9hvuctc.cloudfront.net/company/KD7t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/firstdelivery_7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/bloomberg_140x.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://grind.co.uk/cdn/shop/files/eater_140x.png?... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
94 images 1.9 MB
0 oversized -0 KB
25 legacy format
16 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

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

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

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+
Font Loading
21 fonts (217 KB)
PASS
21 fonts (217 KB)
Info::
21 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

21

217 KB total

Render-blocking

0

of 21

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 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s FCP 6.6 s LCP 31.7 shttps://grind.co.uk/cdn/shop/t/207/assets/ApercuRegular.woff?v=164626992907334924521648547274ApercuRegular.woff https://grind.co.uk/cdn/shop/t/207/assets/ApercuRegular.woff?v=164626992907334924521648547274 — 33.6 KiB — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuBold.woff?v=91623491051789556331648547289ApercuBold.woff https://grind.co.uk/cdn/shop/t/207/assets/ApercuBold.woff?v=91623491051789556331648547289 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuMedium.woff?v=158718178338810366151648547274ApercuMedium.woff https://grind.co.uk/cdn/shop/t/207/assets/ApercuMedium.woff?v=158718178338810366151648547274 — 0 B — 0 ms — font-display: swaphttps://use.typekit.net/af/b18cf9/00000000000000007735f8a7/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/b18cf9/00000000000000007735f8a7/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/fa-brands-400.woff2fa-brands-400.woff2 https://grind.co.uk/cdn/shop/t/207/assets/fa-brands-400.woff2 — 0 B — 0 ms — font-display: swaphttps://use.typekit.net/af/fc9892/00000000000000007736878f/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3l https://use.typekit.net/af/fc9892/00000000000000007736878f/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuBoldItalic.otf?v=175575176175859182681701421764ApercuBoldItalic.otf https://grind.co.uk/cdn/shop/t/207/assets/ApercuBoldItalic.otf?v=175575176175859182681701421764 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/fa-brands-400.ttffa-brands-400.ttf https://grind.co.uk/cdn/shop/t/207/assets/fa-brands-400.ttf — 0 B — 0 ms — font-display: swaphttps://use.typekit.net/af/fc9892/00000000000000007736878f/31/d?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3d https://use.typekit.net/af/fc9892/00000000000000007736878f/31/d?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3 — 0 B — 0 ms — font-display: swaphttps://use.typekit.net/af/b18cf9/00000000000000007735f8a7/31/d?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3d https://use.typekit.net/af/b18cf9/00000000000000007735f8a7/31/d?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuRegular.woff?v=164626992907334924521648547274ApercuRegular.woff https://grind.co.uk/cdn/shop/t/207/assets/ApercuRegular.woff?v=164626992907334924521648547274 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuBold.woff?v=91623491051789556331648547289ApercuBold.woff https://grind.co.uk/cdn/shop/t/207/assets/ApercuBold.woff?v=91623491051789556331648547289 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuMedium.woff?v=158718178338810366151648547274ApercuMedium.woff https://grind.co.uk/cdn/shop/t/207/assets/ApercuMedium.woff?v=158718178338810366151648547274 — 0 B — 0 ms — font-display: swaphttps://use.typekit.net/af/b18cf9/00000000000000007735f8a7/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/b18cf9/00000000000000007735f8a7/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 0 B — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/fa-brands-400.woff2fa-brands-400.woff2 https://grind.co.uk/cdn/shop/t/207/assets/fa-brands-400.woff2 — 4.3 KiB — 0 ms — font-display: swaphttps://grind.co.uk/cdn/shop/t/207/assets/ApercuBoldItalic.otf?v=175575176175859182681701421764ApercuBoldItalic.otf https://grind.co.uk/cdn/shop/t/207/assets/ApercuBoldItalic.otf?v=175575176175859182681701421764 — 47.7 KiB — 0 ms — font-display: swaphttps://use.typekit.net/af/ba7126/00000000000000007735f8a4/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n6&v=3l https://use.typekit.net/af/ba7126/00000000000000007735f8a4/31/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n6&v=3 — 27.7 KiB — 0 ms — font-display: swaphttps://cdn.shopify.com/s/files/1/0123/2928/7737/t/207/assets/ApercuRegular.woff?v=164626992907334924521648547274ApercuRegular.woff https://cdn.shopify.com/s/files/1/0123/2928/7737/t/207/assets/ApercuRegular.woff?v=164626992907334924521648547274 — 33.6 KiB — 0 ms — font-display: swaphttps://cdn.shopify.com/s/files/1/0123/2928/7737/t/207/assets/ApercuBold.woff?v=91623491051789556331648547289ApercuBold.woff https://cdn.shopify.com/s/files/1/0123/2928/7737/t/207/assets/ApercuBold.woff?v=91623491051789556331648547289 — 46.0 KiB — 0 ms — font-display: swaphttps://fonts.bunny.net/inter/files/inter-latin-400-normal.woff2inter-latin-400-normal.... https://fonts.bunny.net/inter/files/inter-latin-400-normal.woff2 — 23.8 KiB — 0 ms — font-display: swaphttps://fonts.bunny.net/inter/files/inter-latin-400-normal.woff2inter-latin-400-normal.... https://fonts.bunny.net/inter/files/inter-latin-400-normal.woff2 — 0 B — 0 ms — font-display: swap
ApercuRegular.woff woff swap
Size 34 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
ApercuBold.woff woff swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
ApercuMedium.woff woff swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
l unknown swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
l unknown swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ApercuBoldItalic.otf otf swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-brands-400.ttf ttf swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
d unknown swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
d unknown swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ApercuRegular.woff woff swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
ApercuBold.woff woff swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
ApercuMedium.woff woff swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
l woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 4 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ApercuBoldItalic.otf otf swap
Size 48 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
l woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ApercuRegular.woff woff swap
Size 34 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
ApercuBold.woff woff swap
Size 46 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
inter-latin-400-normal.... woff2 swap
Size 24 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
inter-latin-400-normal.... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
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)

Fixing the unchecked items could save ~48 KB and ~96 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
14 hints, 0 missing preconnects
PASS
14 hints, 0 missing preconnects
Info::
Page uses 14 resource hint(s)

Current Resource Hints

preconnect
5
preload
1
dns-prefetch
1
prefetch
7

14 resource hints configured

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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
520 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
38% of JavaScript execution is third-party
First-party Third-party 14822ms · 1309KB · £77/mo
Unattributable
Other
Costly
Execution 4599ms
Transfer 0 KB
Monthly Cost £24/mo
Optimizely
A/B Testing
Costly
Execution 1360ms
Transfer 0 KB
Unused 46%
Monthly Cost £7/mo
Google Tag Manager
Tag Manager
Costly
Execution 1067ms
Transfer 166 KB
Monthly Cost £6/mo
static.klaviyo.com
Other
Costly
Execution 1044ms
Transfer 8 KB
Monthly Cost £5/mo
Microsoft Clarity
Session Replay
Costly
Execution 952ms
Transfer 26 KB
Monthly Cost £5/mo
assets.gorgias.chat
Other
Costly
Execution 652ms
Transfer 93 KB
Unused 44%
Monthly Cost £3/mo
Google Tag Manager
Tag Manager
Costly
Execution 575ms
Transfer 0 KB
Monthly Cost £3/mo
assets.gorgias.chat
Other
Costly
Execution 464ms
Transfer 43 KB
Monthly Cost £2/mo
static.klaviyo.com
Other
Costly
Execution 442ms
Transfer 10 KB
Monthly Cost £2/mo
Google Tag Manager
Tag Manager
Costly
Execution 418ms
Transfer 143 KB
Unused 38%
Monthly Cost £2/mo
Facebook Pixel
Advertising
Costly
Execution 368ms
Transfer 40 KB
Monthly Cost £2/mo
analytics.tiktok.com
Other
Costly
Execution 360ms
Transfer 110 KB
Unused 52%
Monthly Cost £2/mo
Google Tag Manager
Tag Manager
Costly
Execution 339ms
Transfer 143 KB
Unused 39%
Monthly Cost £2/mo
Facebook Pixel
Advertising
Costly
Execution 278ms
Transfer 95 KB
Unused 33%
Monthly Cost £1/mo
assets.gorgias.chat
Other
Costly
Execution 242ms
Transfer 38 KB
Monthly Cost £1/mo
assets.gorgias.chat
Other
Costly
Execution 237ms
Transfer 18 KB
Monthly Cost £1/mo
static.klaviyo.com
Other
Optional
Execution 164ms
Transfer 52 KB
Unused 67%
Monthly Cost £1/mo
d.impactradius-event.com
Other
Optional
Execution 147ms
Transfer 20 KB
Monthly Cost £1/mo
cdn.9gtb.com
Other
Optional
Execution 146ms
Transfer 61 KB
Unused 54%
Monthly Cost £1/mo
cdn.shopify.com
Other
Optional
Execution 136ms
Transfer 0 KB
Monthly Cost £1/mo
cdn.shopify.com
Other
Optional
Execution 126ms
Transfer 0 KB
Monthly Cost £1/mo
storage.googleapis.com
Other
Optional
Execution 106ms
Transfer 1 KB
Monthly Cost £1/mo
analytics.tiktok.com
Other
Optional
Execution 94ms
Transfer 40 KB
Monthly Cost £0/mo
LinkedIn Insight
Advertising
Optional
Execution 94ms
Transfer 19 KB
Monthly Cost £0/mo
widget.trustpilot.com
Other
Optional
Execution 87ms
Transfer 8 KB
Monthly Cost £0/mo
static.klaviyo.com
Other
Optional
Execution 76ms
Transfer 0 KB
Monthly Cost £0/mo
Google Tag Manager
Tag Manager
Optional
Execution 68ms
Transfer 143 KB
Unused 74%
Monthly Cost £0/mo
static.klaviyo.com
Other
Optional
Execution 68ms
Transfer 1 KB
Monthly Cost £0/mo
static.klaviyo.com
Other
Optional
Execution 56ms
Transfer 19 KB
Monthly Cost £0/mo
static-tracking.klaviyo.com
Other
Optional
Execution 55ms
Transfer 14 KB
Monthly Cost £0/mo

These scripts may cost more than they're worth

  • Unattributable adds 4599ms and costs ~£24/month
  • Optimizely adds 1360ms and costs ~£7/month
  • Google Tag Manager adds 1067ms and costs ~£6/month
  • static.klaviyo.com adds 1044ms and costs ~£5/month
  • Microsoft Clarity adds 952ms and costs ~£5/month
  • assets.gorgias.chat adds 652ms and costs ~£3/month
  • Google Tag Manager adds 575ms and costs ~£3/month
  • assets.gorgias.chat adds 464ms and costs ~£2/month
  • static.klaviyo.com adds 442ms and costs ~£2/month
  • Google Tag Manager adds 418ms and costs ~£2/month
  • Facebook Pixel adds 368ms and costs ~£2/month
  • analytics.tiktok.com adds 360ms and costs ~£2/month
  • Google Tag Manager adds 339ms and costs ~£2/month
  • Facebook Pixel adds 278ms and costs ~£1/month
  • assets.gorgias.chat adds 242ms and costs ~£1/month
  • assets.gorgias.chat adds 237ms and costs ~£1/month

Unattributable takes 4599ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Optimizely takes 1360ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 1067ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

static.klaviyo.com takes 1044ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Microsoft Clarity takes 952ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets.gorgias.chat takes 652ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 575ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets.gorgias.chat takes 464ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

static.klaviyo.com takes 442ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 418ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 368ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

analytics.tiktok.com takes 360ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

52% of analytics.tiktok.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Google Tag Manager takes 339ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 278ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets.gorgias.chat takes 242ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets.gorgias.chat takes 237ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

67% of static.klaviyo.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

54% of cdn.9gtb.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

74% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

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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