Skip to content
https://city.ac.uk

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
5
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
53
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.

5.78 s

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

15.36 s

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

296 ms

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

0.078

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

5.78 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.

15.53 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
7 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
9.0 MB transferred, 77 requests
FIX
9.0 MB transferred, 77 requests
Critical::
Page weighs 11.6 MB (9.0 MB transferred)
Warning::
Images are 2.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.9 MB
Warning::
JavaScript is 524 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 524 KB
Info::
Fonts are 315 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 315 KB
Info::
77 HTTP requests
Info::
Estimated 1.9 g CO2 per page load
9.0 MB / 2.4 MB budget
9.0 MB transferred
77 requests
1.9 g CO2 per page load
Other 5.1 MiB 57%
Images 2.9 MiB 33%
JavaScript 524.4 KiB 6%
Fonts 315.0 KiB 3%
CSS 56.9 KiB 1%
HTML 35.5 KiB 0%
Other 12.9 KiB 0%
Other 9.1 KiB 0%
Other 1.3 KiB 0%
0 2.4 MB 4.9 MB
Over budget

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

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

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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (9.0 MiB of 9.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2112ms total JS execution
FIX
2112ms total JS execution
Warning::
https://www.citystgeorges.ac.uk/: 682ms CPU time
Warning::
Unattributable: 453ms CPU time
Warning::
https://consent.cookiebot.com/uc.js?cbid=d20f0709-...: 427ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5B7...: 330ms CPU time
Info::
https://www.citystgeorges.ac.uk/__data/assets/git_...: 143ms CPU time
Warning::
Third-party scripts: 2112ms (100% of total)

Main Thread Breakdown

Script Evaluation 31% Other 27% Style & Layout 24% Parse HTML & CSS 10% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://www.citystgeorges.ac.uk/682ms13ms1ms3rd
Unattributable453ms7ms0ms3rd
https://consent.cookiebot.com/uc.js?cbid=d20f0709-234f-4c30-b3b6-1298df75d244&implementation=gtm&consentmode-dataredaction=dynamic427ms222ms8ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5B77FVX330ms276ms49ms3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/main.js?v=2026.04.14143ms76ms9ms3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/search.js?v=2026.04.1477ms67ms6ms3rd
D
Page Weight Inventory
Action
77 resources · 9.0 MB · 196 KB savings available
FIX
77 resources · 9.0 MB · 196 KB savings available
Warning::
Page weight 8.0 MB over 1MB target
Got: 9.0 MB Expected: ≤ 1 MB
Info::
~196 KB of savings available
Warning::
76 third-party resources (100% of weight)
Info::
5 resources over 200KB
77 resources · 9.0 MiB · 76 third-party 8.0 MiB over 1MB target
Media 57% · 5.1 MiB
Image 33% · 3.0 MiB
JavaScript 6% · 524.4 KiB
Font 3% · 315.0 KiB
CSS 1% · 56.9 KiB
Document 0% · 35.5 KiB
Other 0% · 10.7 KiB

~195.9 KiB of savings available

Remove unused JavaScript: 195.9 KiB
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.

C
Image Optimization
Action
36 images, 0 KB saveable
REVIEW
36 images, 0 KB saveable
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/file... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
36 images 2.9 MB
0 oversized -0 KB
34 legacy format
20 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

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

C
JS Bundles
Action
11 scripts, 196 KB unused
REVIEW
11 scripts, 196 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5B7...: 84 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/git_...: 36 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/git_...: 29 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.cookiebot.com/d20f0709-234f-4c30-b...: 25 KB unused (23%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.citystgeorges.ac.uk/__data/assets/git_...: 22 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 196 KB
196 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtm.js?id=GTM-5B77FVX194 KB84 KB (43%)✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-direct.js?v=2026.04.1436 KB36 KB (99%)✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-dependencies.js?v=2026.04.1435 KB29 KB (82%)✓3rd
https://consent.cookiebot.com/d20f0709-234f-4c30-b3b6-1298df75d244/cc.js?renew=false&referer=www.citystgeorges.ac.uk&dnt=false&init=false112 KB25 KB (23%)✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/main.js?v=2026.04.1427 KB22 KB (81%)✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/core.js?v=2026.04.1426 KB—✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/axios.js?v=2026.04.147 KB—✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/react.js?v=2026.04.1439 KB—✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/search.js?v=2026.04.1416 KB—✓3rd
https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/browser-search-box.js?v=2026.04.146 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

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
14 fonts (315 KB)
PASS
14 fonts (315 KB)
Info::
14 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

14

315 KB total

Render-blocking

0

of 14

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 FCP 5.8 s LCP 15.4 shttps://use.typekit.net/af/2cef2b/000000000000000077359445/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3l https://use.typekit.net/af/2cef2b/000000000000000077359445/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3 — 23.8 KiB — 11 ms — font-display: swaphttps://use.typekit.net/af/4e0d0a/000000000000000077359994/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n3&v=3l https://use.typekit.net/af/4e0d0a/000000000000000077359994/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n3&v=3 — 30.4 KiB — 6 ms — font-display: swaphttps://use.typekit.net/af/e8b7d1/00000000000000007735999d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3l https://use.typekit.net/af/e8b7d1/00000000000000007735999d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3 — 36.4 KiB — 11 ms — font-display: swaphttps://use.typekit.net/af/3b0680/000000000000000077359463/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3l https://use.typekit.net/af/3b0680/000000000000000077359463/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3 — 25.7 KiB — 11 ms — font-display: swaphttps://use.typekit.net/af/584488/0000000000000000773599ca/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3l https://use.typekit.net/af/584488/0000000000000000773599ca/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3 — 34.7 KiB — 11 ms — font-display: swaphttps://use.typekit.net/af/64a2a3/0000000000000000773599cd/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3l https://use.typekit.net/af/64a2a3/0000000000000000773599cd/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3 — 36.6 KiB — 11 ms — font-display: swaphttps://use.typekit.net/af/e6f9a4/000000000000000077359441/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n5&v=3l https://use.typekit.net/af/e6f9a4/000000000000000077359441/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n5&v=3 — 25.0 KiB — 10 ms — font-display: swaphttps://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-regular-400.woff2fa-sharp-regular-400.woff2 https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-regular-400.woff2 — 11.6 KiB — 86 ms — font-display: swaphttps://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-solid-900.woff2fa-sharp-solid-900.woff2 https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-solid-900.woff2 — 9.5 KiB — 84 ms — font-display: swaphttps://use.typekit.net/af/fd9187/00000000000000007735945d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3l https://use.typekit.net/af/fd9187/00000000000000007735945d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3 — 25.2 KiB — 13 ms — font-display: swaphttps://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-regular-400.woff2fa-regular-400.woff2 https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-regular-400.woff2 — 14.0 KiB — 80 ms — font-display: swaphttps://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-brands-400.woff2fa-brands-400.woff2 https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-brands-400.woff2 — 4.1 KiB — 85 ms — font-display: swaphttps://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-solid-900.woff2 — 12.5 KiB — 108 ms — font-display: swaphttps://use.typekit.net/af/7aa6bf/000000000000000077359422/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=i4&v=3l https://use.typekit.net/af/7aa6bf/000000000000000077359422/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=i4&v=3 — 25.4 KiB — 4 ms — font-display: swap
l woff2 swap
Size 24 KB
Load time 11 ms
Start 413 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 30 KB
Load time 6 ms
Start 419 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 36 KB
Load time 11 ms
Start 425 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 26 KB
Load time 11 ms
Start 427 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 35 KB
Load time 11 ms
Start 429 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 37 KB
Load time 11 ms
Start 431 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 25 KB
Load time 10 ms
Start 433 ms
Risk FOUT — text flashes from fallback to web font
fa-sharp-regular-400.woff2 woff2 swap
Size 12 KB
Load time 86 ms
Start 434 ms
Risk FOUT — text flashes from fallback to web font
fa-sharp-solid-900.woff2 woff2 swap
Size 9 KB
Load time 84 ms
Start 434 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 25 KB
Load time 13 ms
Start 435 ms
Risk FOUT — text flashes from fallback to web font
fa-regular-400.woff2 woff2 swap
Size 14 KB
Load time 80 ms
Start 435 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 4 KB
Load time 85 ms
Start 435 ms
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 13 KB
Load time 108 ms
Start 437 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 25 KB
Load time 4 ms
Start 643 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)
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+
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
Network Waterfall
77 requests over 862ms
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 FCP 5.8 s LCP 15.4 shttps://city.ac.uk// https://city.ac.uk/ — 301 — 148 B — 19 ms — h2https://www.citystgeorges.ac.uk/www.citystgeorges.ac.uk/ https://www.citystgeorges.ac.uk/ — 200 — 34.8 KiB — 184 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/core.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/core.js?v=2026.04.14 — 200 — 25.5 KiB — 143 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-dependencies.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-dependencies.js?v=2026.04.14 — 200 — 35.2 KiB — 142 ms — h2https://use.typekit.net/acx2egc.cssuse.typekit.net/acx2egc.css https://use.typekit.net/acx2egc.css — 200 — 2.3 KiB — 65 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/css/home.css?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/css/home.css?v=2026.04.14 — 200 — 54.4 KiB — 108 ms — h2https://www.citystgeorges.ac.uk/__data/assets/file/0018/810027/city-st-georges-responsive-logo.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0018/810027/city-st-georges-responsive-logo.svg — 200 — 5.1 KiB — 75 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-direct.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-direct.js?v=2026.04.14 — 200 — 36.4 KiB — 133 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/axios.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/axios.js?v=2026.04.14 — 200 — 6.8 KiB — 126 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/react.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/react.js?v=2026.04.14 — 200 — 38.6 KiB — 146 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/main.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/main.js?v=2026.04.14 — 200 — 26.9 KiB — 131 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/search.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/search.js?v=2026.04.14 — 200 — 16.2 KiB — 128 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-5B77FVXwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-5B77FVX — 200 — 193.6 KiB — 210 ms — h2https://www.citystgeorges.ac.uk/manifest.jsonwww.citystgeorges.ac.uk/manifest.js... https://www.citystgeorges.ac.uk/manifest.json — 200 — 1.3 KiB — 129 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0006/862953/City-St-Georges-video-banner-image.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0006/862953/City-St-Georges-video-banner-image.jpg — 200 — 981.7 KiB — 197 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0005/719285/city-strapline-outline.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0005/719285/city-strapline-outline.svg — 200 — 3.1 KiB — 99 ms — h3https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/browser-search-box.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/browser-search-box.js?v=2026.04.14 — 200 — 6.0 KiB — 102 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0007/713617/2x2triangles.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0007/713617/2x2triangles.svg — 200 — 643 B — 104 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/721399/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/721399/varieties/breakpoint-mobile.jpg — 200 — 22.5 KiB — 135 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0005/711239/3709-citystgeorges.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0005/711239/3709-citystgeorges.svg — 200 — 4.6 KiB — 120 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/718420/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/718420/varieties/breakpoint-mobile.jpg — 200 — 22.7 KiB — 141 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0005/721589/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0005/721589/varieties/breakpoint-mobile.jpg — 200 — 25.7 KiB — 140 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0003/711237/red-map.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0003/711237/red-map.svg — 200 — 1.7 KiB — 131 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0007/724273/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0007/724273/varieties/breakpoint-mobile.jpg — 200 — 28.6 KiB — 137 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0008/721574/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0008/721574/varieties/breakpoint-mobile.jpg — 200 — 22.2 KiB — 133 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/721588/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/721588/varieties/breakpoint-mobile.jpg — 200 — 28.2 KiB — 140 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0011/721586/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0011/721586/varieties/breakpoint-mobile.jpg — 200 — 17.6 KiB — 98 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0003/721587/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0003/721587/varieties/breakpoint-mobile.jpg — 200 — 22.8 KiB — 132 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0010/721567/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0010/721567/varieties/breakpoint-mobile.jpg — 200 — 11.3 KiB — 139 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0010/933832/the-edit-tablet.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0010/933832/the-edit-tablet.jpg — 200 — 123.2 KiB — 140 ms — h3
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 FCP 5.8 s LCP 15.4 shttps://city.ac.uk// https://city.ac.uk/ — 301 — 148 B — 19 ms — h2https://www.citystgeorges.ac.uk/www.citystgeorges.ac.uk/ https://www.citystgeorges.ac.uk/ — 200 — 34.8 KiB — 184 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/core.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/core.js?v=2026.04.14 — 200 — 25.5 KiB — 143 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-dependencies.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-dependencies.js?v=2026.04.14 — 200 — 35.2 KiB — 142 ms — h2https://use.typekit.net/acx2egc.cssuse.typekit.net/acx2egc.css https://use.typekit.net/acx2egc.css — 200 — 2.3 KiB — 65 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/css/home.css?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/css/home.css?v=2026.04.14 — 200 — 54.4 KiB — 108 ms — h2https://www.citystgeorges.ac.uk/__data/assets/file/0018/810027/city-st-georges-responsive-logo.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0018/810027/city-st-georges-responsive-logo.svg — 200 — 5.1 KiB — 75 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-direct.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/vendor-direct.js?v=2026.04.14 — 200 — 36.4 KiB — 133 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/axios.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/axios.js?v=2026.04.14 — 200 — 6.8 KiB — 126 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/react.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/react.js?v=2026.04.14 — 200 — 38.6 KiB — 146 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/main.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/main.js?v=2026.04.14 — 200 — 26.9 KiB — 131 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/search.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/search.js?v=2026.04.14 — 200 — 16.2 KiB — 128 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-5B77FVXwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-5B77FVX — 200 — 193.6 KiB — 210 ms — h2https://www.citystgeorges.ac.uk/manifest.jsonwww.citystgeorges.ac.uk/manifest.js... https://www.citystgeorges.ac.uk/manifest.json — 200 — 1.3 KiB — 129 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0006/862953/City-St-Georges-video-banner-image.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0006/862953/City-St-Georges-video-banner-image.jpg — 200 — 981.7 KiB — 197 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0005/719285/city-strapline-outline.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0005/719285/city-strapline-outline.svg — 200 — 3.1 KiB — 99 ms — h3https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/browser-search-box.js?v=2026.04.14www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/js/browser-search-box.js?v=2026.04.14 — 200 — 6.0 KiB — 102 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0007/713617/2x2triangles.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0007/713617/2x2triangles.svg — 200 — 643 B — 104 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/721399/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/721399/varieties/breakpoint-mobile.jpg — 200 — 22.5 KiB — 135 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0005/711239/3709-citystgeorges.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0005/711239/3709-citystgeorges.svg — 200 — 4.6 KiB — 120 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/718420/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/718420/varieties/breakpoint-mobile.jpg — 200 — 22.7 KiB — 141 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0005/721589/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0005/721589/varieties/breakpoint-mobile.jpg — 200 — 25.7 KiB — 140 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0003/711237/red-map.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0003/711237/red-map.svg — 200 — 1.7 KiB — 131 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0007/724273/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0007/724273/varieties/breakpoint-mobile.jpg — 200 — 28.6 KiB — 137 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0008/721574/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0008/721574/varieties/breakpoint-mobile.jpg — 200 — 22.2 KiB — 133 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/721588/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/721588/varieties/breakpoint-mobile.jpg — 200 — 28.2 KiB — 140 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0011/721586/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0011/721586/varieties/breakpoint-mobile.jpg — 200 — 17.6 KiB — 98 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0003/721587/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0003/721587/varieties/breakpoint-mobile.jpg — 200 — 22.8 KiB — 132 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0010/721567/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0010/721567/varieties/breakpoint-mobile.jpg — 200 — 11.3 KiB — 139 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0010/933832/the-edit-tablet.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0010/933832/the-edit-tablet.jpg — 200 — 123.2 KiB — 140 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0019/721270/2x2triangles-white.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0019/721270/2x2triangles-white.svg — 200 — 641 B — 101 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0018/721800/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0018/721800/varieties/breakpoint-mobile.jpg — 200 — 11.9 KiB — 131 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0011/975944/varieties/breakpoint-mobile.pngwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0011/975944/varieties/breakpoint-mobile.png — 200 — 252.3 KiB — 157 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/975523/varieties/breakpoint-mobile.pngwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/975523/varieties/breakpoint-mobile.png — 200 — 182.4 KiB — 149 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0008/858626/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0008/858626/varieties/breakpoint-mobile.jpg — 200 — 33.7 KiB — 137 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0010/858628/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0010/858628/varieties/breakpoint-mobile.jpg — 200 — 26.9 KiB — 134 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0009/858627/varieties/breakpoint-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0009/858627/varieties/breakpoint-mobile.jpg — 200 — 31.7 KiB — 116 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0005/757625/TEF-2023-silver-logo.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0005/757625/TEF-2023-silver-logo.svg — 200 — 5.9 KiB — 129 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0011/763949/ofsted-good-provider-white.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0011/763949/ofsted-good-provider-white.svg — 200 — 2.5 KiB — 120 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0004/754456/Advance-HE-Membership-logo_Standalone_AS-Bronze_WO.pngwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0004/754456/Advance-HE-Membership-logo_Standalone_AS-Bronze_WO.png — 200 — 274.2 KiB — 159 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0010/861769/Silver-Award-2024-white.pngwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0010/861769/Silver-Award-2024-white.png — 200 — 16.6 KiB — 124 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0003/754455/Advance-HE-Membership-logo_Standalone_REC-Bronze_WO_lrg.pngwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0003/754455/Advance-HE-Membership-logo_Standalone_REC-Bronze_WO_lrg.png — 200 — 20.7 KiB — 129 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0006/868767/disablity-confident-leader-white.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0006/868767/disablity-confident-leader-white.svg — 200 — 3.7 KiB — 124 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0018/442242/university-of-london-white.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0018/442242/university-of-london-white.svg — 200 — 8.6 KiB — 127 ms — h3https://www.citystgeorges.ac.uk/__data/assets/video_file/0008/860903/City-St-Georges-website-film_ENCODED.mp4www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/video_file/0008/860903/City-St-Georges-website-film_ENCODED.mp4 — 206 — 5.1 MiB — 101 ms — h3https://p.typekit.net/p.css?s=1&k=acx2egc&ht=tk&f=4526.4531.4621.4648.4649.4650.4651.4831.5094.5097.39866.39867.39868.39869.39870.39871.39872.39873.39874.39875.39882.39883.39884.39885.39886.39887.39888.39889.39890.39891.39898.39899.39900.39901.39902.39903.39904.39905.39906.39907&a=280672761&app=typekit&e=cssp.typekit.net/p.css?s=1&k=acx2egc&h... https://p.typekit.net/p.css?s=1&k=acx2egc&ht=tk&f=4526.4531.4621.4648.4649.4650.4651.4831.5094.5097.39866.39867.39868.39869.39870.39871.39872.39873.39874.39875.39882.39883.39884.39885.39886.39887.39888.39889.39890.39891.39898.39899.39900.39901.39902.39903.39904.39905.39906.39907&a=280672761&app=typekit&e=css — 200 — 172 B — 51 ms — h2https://www.city.ac.uk/__data/assets/image/0008/720674/student-life-mobile.jpgwww.city.ac.uk/__data/assets/image/... https://www.city.ac.uk/__data/assets/image/0008/720674/student-life-mobile.jpg — 301 — 187 B — 96 ms — h2https://use.typekit.net/af/2cef2b/000000000000000077359445/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3use.typekit.net/af/2cef2b/000000000... https://use.typekit.net/af/2cef2b/000000000000000077359445/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3 — 200 — 23.8 KiB — 11 ms — h2https://use.typekit.net/af/4e0d0a/000000000000000077359994/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n3&v=3use.typekit.net/af/4e0d0a/000000000... https://use.typekit.net/af/4e0d0a/000000000000000077359994/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n3&v=3 — 200 — 30.4 KiB — 6 ms — h2https://use.typekit.net/af/e8b7d1/00000000000000007735999d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3use.typekit.net/af/e8b7d1/000000000... https://use.typekit.net/af/e8b7d1/00000000000000007735999d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3 — 200 — 36.4 KiB — 11 ms — h2https://use.typekit.net/af/3b0680/000000000000000077359463/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3use.typekit.net/af/3b0680/000000000... https://use.typekit.net/af/3b0680/000000000000000077359463/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3 — 200 — 25.7 KiB — 11 ms — h2https://use.typekit.net/af/584488/0000000000000000773599ca/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3use.typekit.net/af/584488/000000000... https://use.typekit.net/af/584488/0000000000000000773599ca/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n4&v=3 — 200 — 34.7 KiB — 11 ms — h2https://use.typekit.net/af/64a2a3/0000000000000000773599cd/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3use.typekit.net/af/64a2a3/000000000... https://use.typekit.net/af/64a2a3/0000000000000000773599cd/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n7&v=3 — 200 — 36.6 KiB — 11 ms — h2https://use.typekit.net/af/e6f9a4/000000000000000077359441/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n5&v=3use.typekit.net/af/e6f9a4/000000000... https://use.typekit.net/af/e6f9a4/000000000000000077359441/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n5&v=3 — 200 — 25.0 KiB — 10 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-regular-400.woff2www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-regular-400.woff2 — 200 — 11.6 KiB — 86 ms — h3https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-solid-900.woff2www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-sharp-solid-900.woff2 — 200 — 9.5 KiB — 84 ms — h3https://use.typekit.net/af/fd9187/00000000000000007735945d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3use.typekit.net/af/fd9187/000000000... https://use.typekit.net/af/fd9187/00000000000000007735945d/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=n6&v=3 — 200 — 25.2 KiB — 13 ms — h2https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-regular-400.woff2www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-regular-400.woff2 — 200 — 14.0 KiB — 80 ms — h3https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-brands-400.woff2www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-brands-400.woff2 — 200 — 4.1 KiB — 85 ms — h3https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-solid-900.woff2www.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/git_bridge/0011/976169/main/fonts/fa-solid-900.woff2 — 200 — 12.5 KiB — 108 ms — h3https://www.citystgeorges.ac.uk/__data/assets/image/0008/720674/student-life-mobile.jpgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/image/0008/720674/student-life-mobile.jpg — 200 — 808.4 KiB — 148 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0008/719828/play_button-video-hero.svg.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0008/719828/play_button-video-hero.svg.svg — 200 — 734 B — 81 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0009/719829/pause_button-video-hero.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0009/719829/pause_button-video-hero.svg — 200 — 566 B — 85 ms — h3https://www.citystgeorges.ac.uk/web-services/search/inline-search.jsonwww.citystgeorges.ac.uk/web-service... https://www.citystgeorges.ac.uk/web-services/search/inline-search.json — 200 — 510 B — 73 ms — h3https://www.citystgeorges.ac.uk/web-services/finder/courses.jsonwww.citystgeorges.ac.uk/web-service... https://www.citystgeorges.ac.uk/web-services/finder/courses.json — 200 — 3.6 KiB — 102 ms — h3https://consent.cookiebot.com/uc.js?cbid=d20f0709-234f-4c30-b3b6-1298df75d244&implementation=gtm&consentmode-dataredaction=dynamicconsent.cookiebot.com/uc.js?cbid=d2... https://consent.cookiebot.com/uc.js?cbid=d20f0709-234f-4c30-b3b6-1298df75d244&implementation=gtm&consentmode-dataredaction=dynamic — 200 — 27.0 KiB — 77 ms — h2https://www.citystgeorges.ac.uk/__data/assets/file/0007/860452/city-st-georges-white-responsive-logo.svgwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0007/860452/city-st-georges-white-responsive-logo.svg — 200 — 5.2 KiB — 72 ms — h3https://use.typekit.net/af/7aa6bf/000000000000000077359422/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=i4&v=3use.typekit.net/af/7aa6bf/000000000... https://use.typekit.net/af/7aa6bf/000000000000000077359422/31/l?primer=37f831d36666d4cfb865d06c711082244262f12b3e486257fdd5696c36ac17f0&fvd=i4&v=3 — 200 — 25.4 KiB — 4 ms — h2https://city-search.funnelback.squiz.cloud/s/search.json?collection=city~sp-web2020-all&num_ranks=3&query=&sort=&start_rank=1city-search.funnelback.squiz.cloud/... https://city-search.funnelback.squiz.cloud/s/search.json?collection=city~sp-web2020-all&num_ranks=3&query=&sort=&start_rank=1 — 200 — 3.3 KiB — 218 ms — h2https://city-search.funnelback.squiz.cloud/s/suggest.json?collection=city~sp-web2020-all&partial_query=&show=100city-search.funnelback.squiz.cloud/... https://city-search.funnelback.squiz.cloud/s/suggest.json?collection=city~sp-web2020-all&partial_query=&show=100 — 200 — 806 B — 212 ms — h2https://consentcdn.cookiebot.com/consentconfig/d20f0709-234f-4c30-b3b6-1298df75d244/settings.jsonconsentcdn.cookiebot.com/consentcon... https://consentcdn.cookiebot.com/consentconfig/d20f0709-234f-4c30-b3b6-1298df75d244/settings.json — 200 — 944 B — 62 ms — h2https://consent.cookiebot.com/d20f0709-234f-4c30-b3b6-1298df75d244/cc.js?renew=false&referer=www.citystgeorges.ac.uk&dnt=false&init=falseconsent.cookiebot.com/d20f0709-234f... https://consent.cookiebot.com/d20f0709-234f-4c30-b3b6-1298df75d244/cc.js?renew=false&referer=www.citystgeorges.ac.uk&dnt=false&init=false — 200 — 112.2 KiB — 74 ms — h2https://consentcdn.cookiebot.com/sdk/bc-v4.min.htmlconsentcdn.cookiebot.com/sdk/bc-v4.... https://consentcdn.cookiebot.com/sdk/bc-v4.min.html — 200 — 808 B — 58 ms — h2https://www.citystgeorges.ac.uk/__data/assets/file/0018/440370/favicon.icowww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0018/440370/favicon.ico — 200 — 8.2 KiB — 74 ms — h3https://www.citystgeorges.ac.uk/__data/assets/file/0004/443875/icon-144x144.webpwww.citystgeorges.ac.uk/__data/asse... https://www.citystgeorges.ac.uk/__data/assets/file/0004/443875/icon-144x144.webp — 200 — 4.4 KiB — 69 ms — h3data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAuCAYAAACBHPFSAAAAAXNSR0IArs4c6QAAAARnQU1BAACxj…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAuCAYAAACBHPFSAAAAAXNSR0IArs4c6QAAAARnQU1BAACxj… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAA… — 200 — 0 B — 0 ms — data
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 2112ms · 298KB · £22/mo
www.citystgeorges.ac.uk
Other
Costly
Execution 682ms
Transfer 35 KB
Monthly Cost £7/mo
Unattributable
Other
Costly
Execution 453ms
Transfer 0 KB
Monthly Cost £5/mo
consent.cookiebot.com
Other
Costly
Execution 427ms
Transfer 27 KB
Monthly Cost £4/mo
Google Tag Manager
Tag Manager
Costly
Execution 330ms
Transfer 194 KB
Unused 43%
Monthly Cost £3/mo
www.citystgeorges.ac.uk
Other
Optional
Execution 143ms
Transfer 27 KB
Unused 81%
Monthly Cost £1/mo
www.citystgeorges.ac.uk
Other
Optional
Execution 77ms
Transfer 16 KB
Monthly Cost £1/mo

These scripts may cost more than they're worth

  • www.citystgeorges.ac.uk adds 682ms and costs ~£7/month
  • Unattributable adds 453ms and costs ~£5/month
  • consent.cookiebot.com adds 427ms and costs ~£4/month
  • Google Tag Manager adds 330ms and costs ~£3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.citystgeorges.ac.uk takes 682ms 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

Unattributable takes 453ms 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

consent.cookiebot.com takes 427ms 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 330ms 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

81% of www.citystgeorges.ac.uk'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.

Send Feedback