Skip to content
https://oed.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
3
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
75
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.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

1.65 s

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

3.10 s

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

0 ms

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

0.033

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

1.65 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.

3.11 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
15
7 PASS 3 REVIEW 3 FIX
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 (1016.9 KiB of 1017.7 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
20 scripts, 252 KB unused
FIX
20 scripts, 252 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-4PQN...: 71 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-W55...: 62 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn-ukwest.onetrust.com/scripttemplates/20...: 61 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.oed.com/js/chart-3.8.0.js?version=1.53: 58 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.oed.com/js/main.js?version=1.53: unminified — 7 KB could be saved
Info::
Total unused JavaScript: 252 KB
252 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-4PQNDVV0GD&cx=c&gtm=4e64k0173 KB71 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W55924M134 KB62 KB (46%)✓3rd
https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/otBannerSdk.js112 KB61 KB (54%)✓3rd
https://www.oed.com/js/chart-3.8.0.js?version=1.5367 KB58 KB (89%)✓3rd
https://www.oed.com/js/main.js?version=1.5318 KB—✗3rd
https://unpkg.com/@popperjs/core@2.11.8/dist/umd/popper.min.js8 KB—✓3rd
https://www.oed.com/js/api.js?version=1.533 KB—✓3rd
https://www.oed.com/js/idm.js?version=1.5321 KB—✗3rd
https://www.oed.com/js/common.js?version=1.533 KB—✓3rd
https://ouptag.scholarlyiq.com/ntpagetag.js4 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

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
21 images, 0 KB saveable
REVIEW
21 images, 0 KB saveable
Warning::
https://www.oed.com/images/search.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.oed.com/images/info-white.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.oed.com/images/oxford.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.oed.com/images/logo3.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://s3.eu-west-1.amazonaws.com/com.idmgroup.oe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://s3.eu-west-1.amazonaws.com/com.idmgroup.oe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.oed.com/images/account-white.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://s3.eu-west-1.amazonaws.com/com.idmgroup.oe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://s3.eu-west-1.amazonaws.com/com.idmgroup.oe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.oed.com/images/oup-logo-white.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
21 images 184 KB
0 oversized -0 KB
20 legacy format
10 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

B
Page Weight Inventory
64 resources · 1018 KB · 252 KB savings available
REVIEW
64 resources · 1018 KB · 252 KB savings available
Info::
Within 1MB page-weight target
Got: 1018 KB
Info::
~252 KB of savings available
Warning::
63 third-party resources (100% of weight)
64 resources · 1017.7 KiB · 63 third-party Within 1MB page-weight target
JavaScript 63% · 643.9 KiB
Image 20% · 206.0 KiB
Font 10% · 103.5 KiB
CSS 3% · 29.8 KiB
Other 3% · 25.5 KiB
Document 1% · 9.2 KiB

~251.7 KiB of savings available

Remove unused JavaScript: 251.7 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
1018 KB transferred, 64 requests
PASS
1018 KB transferred, 64 requests
Info::
Page weighs 2.7 MB (1018 KB transferred)
Warning::
JavaScript is 629 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 629 KB
Info::
64 HTTP requests
Info::
Estimated 0.21 g CO2 per page load
1018 KB / 2.4 MB budget
1018 KB transferred
64 requests
0.21 g CO2 per page load
JavaScript 629.4 KiB 62%
Images 184.0 KiB 18%
Fonts 103.5 KiB 10%
Other 35.3 KiB 3%
Other 27.6 KiB 3%
CSS 25.5 KiB 3%
HTML 8.3 KiB 1%
Other 2.5 KiB 0%
Other 1.6 KiB 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

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+
JS Execution Cost
343ms total JS execution
PASS
343ms total JS execution
Info::
Unattributable: 113ms CPU time
Info::
https://cdn-ukwest.onetrust.com/scripttemplates/20...: 95ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-4PQN...: 68ms CPU time
Info::
https://www.oed.com/?tl=true: 66ms CPU time
Warning::
Third-party scripts: 343ms (100% of total)

Main Thread Breakdown

Script Evaluation 45% Other 24% Script Parsing & Compilation 14% Style & Layout 12% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
Unattributable113ms19ms0ms3rd
https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/otBannerSdk.js95ms53ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=G-4PQNDVV0GD&cx=c&gtm=4e64k068ms55ms12ms3rd
https://www.oed.com/?tl=true66ms2ms1ms3rd
A+
Font Loading
3 fonts (103 KB)
PASS
3 fonts (103 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

103 KB total

Render-blocking

0

of 3

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 FCP 1.6 s LCP 3.1 shttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 72 ms — font-display: swaphttps://fonts.gstatic.com/s/dmserifdisplay/v17/-nFnOHM81r4j6k0gjAW3mujVU2B2G_Bx0vrx52g.woff2-nFnOHM81r4j6k0gjAW3muj... https://fonts.gstatic.com/s/dmserifdisplay/v17/-nFnOHM81r4j6k0gjAW3mujVU2B2G_Bx0vrx52g.woff2 — 17.5 KiB — 70 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2memtYaGs126MiZpBA-UFUIc... https://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2 — 44.0 KiB — 74 ms — font-display: swap
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 72 ms
Start 756 ms
Risk FOUT — text flashes from fallback to web font
-nFnOHM81r4j6k0gjAW3muj... woff2 swap
Size 17 KB
Load time 70 ms
Start 757 ms
Risk FOUT — text flashes from fallback to web font
memtYaGs126MiZpBA-UFUIc... woff2 swap
Size 44 KB
Load time 74 ms
Start 757 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
Network Waterfall
64 requests over 1708ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.6 s LCP 3.1 shttps://oed.com// https://oed.com/ — 301 — 838 B — 109 ms — http/1.1https://www.oed.com/www.oed.com/ https://www.oed.com/ — 302 — 1.4 KiB — 112 ms — http/1.1https://www.oed.com/oauth2/authorization/transparent?p=eyJlbmMiOiJBMjU2Q0JDLUhTNTEyIiwiYWxnIjoiZGlyIn0..l3gr8r6-khlBc3sg9cW6BQ.kdOy6Kh5JpfLiXmd40djFYnwqDv_0Tn-ZtNnFSz3FbwlUA1Vf5NUzojD_6idFLq1Y8jKEhZbfmKddQdPS9UcrUFgWY9r55f5xOru1SzBJGke6xHpPet9JFfa_Zf0Estb.iJf_FHtn4YeMxSZx5IOOBb_HjYpyaYaBDCITxWv5wZowww.oed.com/oauth2/authorization/tr... https://www.oed.com/oauth2/authorization/transparent?p=eyJlbmMiOiJBMjU2Q0JDLUhTNTEyIiwiYWxnIjoiZGlyIn0..l3gr8r6-khlBc3sg9cW6BQ.kdOy6Kh5JpfLiXmd40djFYnwqDv_0Tn-ZtNnFSz3FbwlUA1Vf5NUzojD_6idFLq1Y8jKEhZbfmKddQdPS9UcrUFgWY9r55f5xOru1SzBJGke6xHpPet9JFfa_Zf0Estb.iJf_FHtn4YeMxSZx5IOOBb_HjYpyaYaBDCITxWv5wZo — 302 — 1.9 KiB — 56 ms — http/1.1https://oup2-idp.sams-sigma.com/authorize?response_type=code&client_id=OED&scope=openid+profile+profile_extended+license+license_rules&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3D&redirect_uri=https%3A%2F%2Fwww.oed.com%2Fauth%2Flogin&nonce=bw-Pkwa6TmzvTeJSPlsLXZ7MlRQAyND_8pfI33xIHoE&ip_address=141.227.188.123&auth_token=eyJlbmMiOiJBMTI4R0NNIiwiYWxnIjoiUlNBLU9BRVAtMjU2In0.IyK5d-_BIWMmHXd55K9baF-e2jDLpyjaXjpS1NUaaSWPUWhJYg9PVT8U7zfh_W3mq2uJkH9pZO3OgkAf3VejbJ0B9gQO0okjatNK6yncC-SBnm-XkxLc_Ldu263-e6BZth0_CAcwcLGQ_rQb8psGR97gs1wxIaTLZq5YkOO-HAKADAzqiL72XiS4xyB9S_kdqMhWr2Gx31v17L25zgUPU-YOOQBiqFMdEtMqpxIcQ46QZQY5Z0Nl-e6I6q5enqdyx2KIzZ9b05H0gAk_wel8VBFggTH6oS1cIHPBp5oLDlzSQMPKsGTVJFVMT7SYg_zdHljCJD7TrPbUTukWQtbPvA.xhup0ck9MLezLb4Y.K15Gx-qAF5XQo4BX2Tb_8WTjIalrSP1DrF5hF7Bsso97cIusuwSZx7LURlAOPSHuHMpF1W-RI1sE0ITaL7htrV9cazMpQW0byhoxbRo0MU9XvUqxps_OkR4UvjI4mjiTQuwG-rxefabSGL37vtg5dksKzdbjS02gYUaObW5cOm0OAglaOnPYBW4p5TYCpYg30xOn_-_7_A.gWfCUzxCvSlwSnMx89on5w&prompt=noneoup2-idp.sams-sigma.com/authorize?r... https://oup2-idp.sams-sigma.com/authorize?response_type=code&client_id=OED&scope=openid+profile+profile_extended+license+license_rules&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3D&redirect_uri=https%3A%2F%2Fwww.oed.com%2Fauth%2Flogin&nonce=bw-Pkwa6TmzvTeJSPlsLXZ7MlRQAyND_8pfI33xIHoE&ip_address=141.227.188.123&auth_token=eyJlbmMiOiJBMTI4R0NNIiwiYWxnIjoiUlNBLU9BRVAtMjU2In0.IyK5d-_BIWMmHXd55K9baF-e2jDLpyjaXjpS1NUaaSWPUWhJYg9PVT8U7zfh_W3mq2uJkH9pZO3OgkAf3VejbJ0B9gQO0okjatNK6yncC-SBnm-XkxLc_Ldu263-e6BZth0_CAcwcLGQ_rQb8psGR97gs1wxIaTLZq5YkOO-HAKADAzqiL72XiS4xyB9S_kdqMhWr2Gx31v17L25zgUPU-YOOQBiqFMdEtMqpxIcQ46QZQY5Z0Nl-e6I6q5enqdyx2KIzZ9b05H0gAk_wel8VBFggTH6oS1cIHPBp5oLDlzSQMPKsGTVJFVMT7SYg_zdHljCJD7TrPbUTukWQtbPvA.xhup0ck9MLezLb4Y.K15Gx-qAF5XQo4BX2Tb_8WTjIalrSP1DrF5hF7Bsso97cIusuwSZx7LURlAOPSHuHMpF1W-RI1sE0ITaL7htrV9cazMpQW0byhoxbRo0MU9XvUqxps_OkR4UvjI4mjiTQuwG-rxefabSGL37vtg5dksKzdbjS02gYUaObW5cOm0OAglaOnPYBW4p5TYCpYg30xOn_-_7_A.gWfCUzxCvSlwSnMx89on5w&prompt=none — 302 — 610 B — 111 ms — h2https://www.oed.com/auth/login?error=login_required&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3Dwww.oed.com/auth/login?error=login_... https://www.oed.com/auth/login?error=login_required&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3D — 302 — 954 B — 44 ms — http/1.1https://www.oed.com/?tl=truewww.oed.com/?tl=true https://www.oed.com/?tl=true — 200 — 8.3 KiB — 60 ms — http/1.1https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600;1,700&family=Open+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,300;1,400;1,500;1,600;1,700;1,800&display=swapfonts.googleapis.com/css2?family=DM... https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600;1,700&family=Open+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,300;1,400;1,500;1,600;1,700;1,800&display=swap — 200 — 3.8 KiB — 96 ms — h2https://www.oed.com/css/oup.css?version=1.53www.oed.com/css/oup.css?version=1.5... https://www.oed.com/css/oup.css?version=1.53 — 200 — 21.7 KiB — 51 ms — http/1.1https://www.oed.com/js/jquery-3.7.1.min.js?version=1.53www.oed.com/js/jquery-3.7.1.min.js?... https://www.oed.com/js/jquery-3.7.1.min.js?version=1.53 — 200 — 31.0 KiB — 101 ms — http/1.1https://www.oed.com/js/js.cookie.min.js?version=1.53www.oed.com/js/js.cookie.min.js?ver... https://www.oed.com/js/js.cookie.min.js?version=1.53 — 200 — 2.2 KiB — 114 ms — http/1.1https://www.oed.com/js/chart-3.8.0.js?version=1.53www.oed.com/js/chart-3.8.0.js?versi... https://www.oed.com/js/chart-3.8.0.js?version=1.53 — 200 — 66.8 KiB — 190 ms — http/1.1https://www.oed.com/js/popper.min.js?version=1.53www.oed.com/js/popper.min.js?versio... https://www.oed.com/js/popper.min.js?version=1.53 — 200 — 8.4 KiB — 117 ms — http/1.1https://www.oed.com/js/tippy-bundle.umd.min.js?version=1.53www.oed.com/js/tippy-bundle.umd.min... https://www.oed.com/js/tippy-bundle.umd.min.js?version=1.53 — 200 — 9.7 KiB — 119 ms — http/1.1https://www.oed.com/js/main.js?version=1.53www.oed.com/js/main.js?version=1.53 https://www.oed.com/js/main.js?version=1.53 — 200 — 17.7 KiB — 164 ms — http/1.1https://www.oed.com/js/api.js?version=1.53www.oed.com/js/api.js?version=1.53 https://www.oed.com/js/api.js?version=1.53 — 200 — 2.8 KiB — 146 ms — http/1.1https://www.oed.com/js/idm.js?version=1.53www.oed.com/js/idm.js?version=1.53 https://www.oed.com/js/idm.js?version=1.53 — 200 — 20.9 KiB — 192 ms — http/1.1https://www.oed.com/js/common.js?version=1.53www.oed.com/js/common.js?version=1.... https://www.oed.com/js/common.js?version=1.53 — 200 — 2.8 KiB — 166 ms — http/1.1https://www.oed.com/images/oxford.svgwww.oed.com/images/oxford.svg https://www.oed.com/images/oxford.svg — 200 — 2.9 KiB — 48 ms — http/1.1https://www.oed.com/images/info-white.svgwww.oed.com/images/info-white.svg https://www.oed.com/images/info-white.svg — 200 — 2.3 KiB — 47 ms — http/1.1https://www.oed.com/images/account-white.svgwww.oed.com/images/account-white.sv... https://www.oed.com/images/account-white.svg — 200 — 2.1 KiB — 49 ms — http/1.1https://www.oed.com/images/spark-white.svgwww.oed.com/images/spark-white.svg https://www.oed.com/images/spark-white.svg — 200 — 2.9 KiB — 46 ms — http/1.1https://www.oed.com/images/logo3.svgwww.oed.com/images/logo3.svg https://www.oed.com/images/logo3.svg — 200 — 7.1 KiB — 50 ms — http/1.1https://unpkg.com/@popperjs/core@2/dist/umd/popper.min.jsunpkg.com/@popperjs/core@2/dist/umd... https://unpkg.com/@popperjs/core@2/dist/umd/popper.min.js — 302 — 311 B — 84 ms — h3https://unpkg.com/tippy.js@6/dist/tippy-bundle.umd.jsunpkg.com/tippy.js@6/dist/tippy-bun... https://unpkg.com/tippy.js@6/dist/tippy-bundle.umd.js — 302 — 272 B — 93 ms — h3https://ouptag.scholarlyiq.com/ntpagetag.jsouptag.scholarlyiq.com/ntpagetag.js https://ouptag.scholarlyiq.com/ntpagetag.js — 200 — 3.6 KiB — 61 ms — h2https://www.oed.com/images/icons/manifest.jsonwww.oed.com/images/icons/manifest.j... https://www.oed.com/images/icons/manifest.json — 200 — 1.6 KiB — 126 ms — http/1.1https://www.oed.com/images/search.svgwww.oed.com/images/search.svg https://www.oed.com/images/search.svg — 200 — 1.9 KiB — 48 ms — http/1.1https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Book-books-information-reading-355x160.jpgs3.eu-west-1.amazonaws.com/com.idmg... https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Book-books-information-reading-355x160.jpg — 200 — 12.5 KiB — 163 ms — http/1.1https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Antedatings2-scaled-e1688135294767-355x160.jpgs3.eu-west-1.amazonaws.com/com.idmg... https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Antedatings2-scaled-e1688135294767-355x160.jpg — 200 — 14.4 KiB — 168 ms — http/1.1https://www.oed.com/images/launchpad.svgwww.oed.com/images/launchpad.svg https://www.oed.com/images/launchpad.svg — 200 — 82.3 KiB — 118 ms — http/1.1
0 ms 1.0 s 2.0 s 3.0 s FCP 1.6 s LCP 3.1 shttps://oed.com// https://oed.com/ — 301 — 838 B — 109 ms — http/1.1https://www.oed.com/www.oed.com/ https://www.oed.com/ — 302 — 1.4 KiB — 112 ms — http/1.1https://www.oed.com/oauth2/authorization/transparent?p=eyJlbmMiOiJBMjU2Q0JDLUhTNTEyIiwiYWxnIjoiZGlyIn0..l3gr8r6-khlBc3sg9cW6BQ.kdOy6Kh5JpfLiXmd40djFYnwqDv_0Tn-ZtNnFSz3FbwlUA1Vf5NUzojD_6idFLq1Y8jKEhZbfmKddQdPS9UcrUFgWY9r55f5xOru1SzBJGke6xHpPet9JFfa_Zf0Estb.iJf_FHtn4YeMxSZx5IOOBb_HjYpyaYaBDCITxWv5wZowww.oed.com/oauth2/authorization/tr... https://www.oed.com/oauth2/authorization/transparent?p=eyJlbmMiOiJBMjU2Q0JDLUhTNTEyIiwiYWxnIjoiZGlyIn0..l3gr8r6-khlBc3sg9cW6BQ.kdOy6Kh5JpfLiXmd40djFYnwqDv_0Tn-ZtNnFSz3FbwlUA1Vf5NUzojD_6idFLq1Y8jKEhZbfmKddQdPS9UcrUFgWY9r55f5xOru1SzBJGke6xHpPet9JFfa_Zf0Estb.iJf_FHtn4YeMxSZx5IOOBb_HjYpyaYaBDCITxWv5wZo — 302 — 1.9 KiB — 56 ms — http/1.1https://oup2-idp.sams-sigma.com/authorize?response_type=code&client_id=OED&scope=openid+profile+profile_extended+license+license_rules&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3D&redirect_uri=https%3A%2F%2Fwww.oed.com%2Fauth%2Flogin&nonce=bw-Pkwa6TmzvTeJSPlsLXZ7MlRQAyND_8pfI33xIHoE&ip_address=141.227.188.123&auth_token=eyJlbmMiOiJBMTI4R0NNIiwiYWxnIjoiUlNBLU9BRVAtMjU2In0.IyK5d-_BIWMmHXd55K9baF-e2jDLpyjaXjpS1NUaaSWPUWhJYg9PVT8U7zfh_W3mq2uJkH9pZO3OgkAf3VejbJ0B9gQO0okjatNK6yncC-SBnm-XkxLc_Ldu263-e6BZth0_CAcwcLGQ_rQb8psGR97gs1wxIaTLZq5YkOO-HAKADAzqiL72XiS4xyB9S_kdqMhWr2Gx31v17L25zgUPU-YOOQBiqFMdEtMqpxIcQ46QZQY5Z0Nl-e6I6q5enqdyx2KIzZ9b05H0gAk_wel8VBFggTH6oS1cIHPBp5oLDlzSQMPKsGTVJFVMT7SYg_zdHljCJD7TrPbUTukWQtbPvA.xhup0ck9MLezLb4Y.K15Gx-qAF5XQo4BX2Tb_8WTjIalrSP1DrF5hF7Bsso97cIusuwSZx7LURlAOPSHuHMpF1W-RI1sE0ITaL7htrV9cazMpQW0byhoxbRo0MU9XvUqxps_OkR4UvjI4mjiTQuwG-rxefabSGL37vtg5dksKzdbjS02gYUaObW5cOm0OAglaOnPYBW4p5TYCpYg30xOn_-_7_A.gWfCUzxCvSlwSnMx89on5w&prompt=noneoup2-idp.sams-sigma.com/authorize?r... https://oup2-idp.sams-sigma.com/authorize?response_type=code&client_id=OED&scope=openid+profile+profile_extended+license+license_rules&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3D&redirect_uri=https%3A%2F%2Fwww.oed.com%2Fauth%2Flogin&nonce=bw-Pkwa6TmzvTeJSPlsLXZ7MlRQAyND_8pfI33xIHoE&ip_address=141.227.188.123&auth_token=eyJlbmMiOiJBMTI4R0NNIiwiYWxnIjoiUlNBLU9BRVAtMjU2In0.IyK5d-_BIWMmHXd55K9baF-e2jDLpyjaXjpS1NUaaSWPUWhJYg9PVT8U7zfh_W3mq2uJkH9pZO3OgkAf3VejbJ0B9gQO0okjatNK6yncC-SBnm-XkxLc_Ldu263-e6BZth0_CAcwcLGQ_rQb8psGR97gs1wxIaTLZq5YkOO-HAKADAzqiL72XiS4xyB9S_kdqMhWr2Gx31v17L25zgUPU-YOOQBiqFMdEtMqpxIcQ46QZQY5Z0Nl-e6I6q5enqdyx2KIzZ9b05H0gAk_wel8VBFggTH6oS1cIHPBp5oLDlzSQMPKsGTVJFVMT7SYg_zdHljCJD7TrPbUTukWQtbPvA.xhup0ck9MLezLb4Y.K15Gx-qAF5XQo4BX2Tb_8WTjIalrSP1DrF5hF7Bsso97cIusuwSZx7LURlAOPSHuHMpF1W-RI1sE0ITaL7htrV9cazMpQW0byhoxbRo0MU9XvUqxps_OkR4UvjI4mjiTQuwG-rxefabSGL37vtg5dksKzdbjS02gYUaObW5cOm0OAglaOnPYBW4p5TYCpYg30xOn_-_7_A.gWfCUzxCvSlwSnMx89on5w&prompt=none — 302 — 610 B — 111 ms — h2https://www.oed.com/auth/login?error=login_required&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3Dwww.oed.com/auth/login?error=login_... https://www.oed.com/auth/login?error=login_required&state=WIPzTBH0dGNevzXf-votDPMIO2oDlQEGaSUoAoC1jNU%3D — 302 — 954 B — 44 ms — http/1.1https://www.oed.com/?tl=truewww.oed.com/?tl=true https://www.oed.com/?tl=true — 200 — 8.3 KiB — 60 ms — http/1.1https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600;1,700&family=Open+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,300;1,400;1,500;1,600;1,700;1,800&display=swapfonts.googleapis.com/css2?family=DM... https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600;1,700&family=Open+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,300;1,400;1,500;1,600;1,700;1,800&display=swap — 200 — 3.8 KiB — 96 ms — h2https://www.oed.com/css/oup.css?version=1.53www.oed.com/css/oup.css?version=1.5... https://www.oed.com/css/oup.css?version=1.53 — 200 — 21.7 KiB — 51 ms — http/1.1https://www.oed.com/js/jquery-3.7.1.min.js?version=1.53www.oed.com/js/jquery-3.7.1.min.js?... https://www.oed.com/js/jquery-3.7.1.min.js?version=1.53 — 200 — 31.0 KiB — 101 ms — http/1.1https://www.oed.com/js/js.cookie.min.js?version=1.53www.oed.com/js/js.cookie.min.js?ver... https://www.oed.com/js/js.cookie.min.js?version=1.53 — 200 — 2.2 KiB — 114 ms — http/1.1https://www.oed.com/js/chart-3.8.0.js?version=1.53www.oed.com/js/chart-3.8.0.js?versi... https://www.oed.com/js/chart-3.8.0.js?version=1.53 — 200 — 66.8 KiB — 190 ms — http/1.1https://www.oed.com/js/popper.min.js?version=1.53www.oed.com/js/popper.min.js?versio... https://www.oed.com/js/popper.min.js?version=1.53 — 200 — 8.4 KiB — 117 ms — http/1.1https://www.oed.com/js/tippy-bundle.umd.min.js?version=1.53www.oed.com/js/tippy-bundle.umd.min... https://www.oed.com/js/tippy-bundle.umd.min.js?version=1.53 — 200 — 9.7 KiB — 119 ms — http/1.1https://www.oed.com/js/main.js?version=1.53www.oed.com/js/main.js?version=1.53 https://www.oed.com/js/main.js?version=1.53 — 200 — 17.7 KiB — 164 ms — http/1.1https://www.oed.com/js/api.js?version=1.53www.oed.com/js/api.js?version=1.53 https://www.oed.com/js/api.js?version=1.53 — 200 — 2.8 KiB — 146 ms — http/1.1https://www.oed.com/js/idm.js?version=1.53www.oed.com/js/idm.js?version=1.53 https://www.oed.com/js/idm.js?version=1.53 — 200 — 20.9 KiB — 192 ms — http/1.1https://www.oed.com/js/common.js?version=1.53www.oed.com/js/common.js?version=1.... https://www.oed.com/js/common.js?version=1.53 — 200 — 2.8 KiB — 166 ms — http/1.1https://www.oed.com/images/oxford.svgwww.oed.com/images/oxford.svg https://www.oed.com/images/oxford.svg — 200 — 2.9 KiB — 48 ms — http/1.1https://www.oed.com/images/info-white.svgwww.oed.com/images/info-white.svg https://www.oed.com/images/info-white.svg — 200 — 2.3 KiB — 47 ms — http/1.1https://www.oed.com/images/account-white.svgwww.oed.com/images/account-white.sv... https://www.oed.com/images/account-white.svg — 200 — 2.1 KiB — 49 ms — http/1.1https://www.oed.com/images/spark-white.svgwww.oed.com/images/spark-white.svg https://www.oed.com/images/spark-white.svg — 200 — 2.9 KiB — 46 ms — http/1.1https://www.oed.com/images/logo3.svgwww.oed.com/images/logo3.svg https://www.oed.com/images/logo3.svg — 200 — 7.1 KiB — 50 ms — http/1.1https://unpkg.com/@popperjs/core@2/dist/umd/popper.min.jsunpkg.com/@popperjs/core@2/dist/umd... https://unpkg.com/@popperjs/core@2/dist/umd/popper.min.js — 302 — 311 B — 84 ms — h3https://unpkg.com/tippy.js@6/dist/tippy-bundle.umd.jsunpkg.com/tippy.js@6/dist/tippy-bun... https://unpkg.com/tippy.js@6/dist/tippy-bundle.umd.js — 302 — 272 B — 93 ms — h3https://ouptag.scholarlyiq.com/ntpagetag.jsouptag.scholarlyiq.com/ntpagetag.js https://ouptag.scholarlyiq.com/ntpagetag.js — 200 — 3.6 KiB — 61 ms — h2https://www.oed.com/images/icons/manifest.jsonwww.oed.com/images/icons/manifest.j... https://www.oed.com/images/icons/manifest.json — 200 — 1.6 KiB — 126 ms — http/1.1https://www.oed.com/images/search.svgwww.oed.com/images/search.svg https://www.oed.com/images/search.svg — 200 — 1.9 KiB — 48 ms — http/1.1https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Book-books-information-reading-355x160.jpgs3.eu-west-1.amazonaws.com/com.idmg... https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Book-books-information-reading-355x160.jpg — 200 — 12.5 KiB — 163 ms — http/1.1https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Antedatings2-scaled-e1688135294767-355x160.jpgs3.eu-west-1.amazonaws.com/com.idmg... https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/Antedatings2-scaled-e1688135294767-355x160.jpg — 200 — 14.4 KiB — 168 ms — http/1.1https://www.oed.com/images/launchpad.svgwww.oed.com/images/launchpad.svg https://www.oed.com/images/launchpad.svg — 200 — 82.3 KiB — 118 ms — http/1.1https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/jay-wennington-LBLwrhwOe28-unsplash-355x160.jpgs3.eu-west-1.amazonaws.com/com.idmg... https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/jay-wennington-LBLwrhwOe28-unsplash-355x160.jpg — 200 — 8.1 KiB — 157 ms — http/1.1data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3d…data:image/svg+xml;base64,PHN2ZyBpZ... data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3d… — 200 — 0 B — 0 ms — datahttps://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/hourglass-e1688127290416-355x160.jpgs3.eu-west-1.amazonaws.com/com.idmg... https://s3.eu-west-1.amazonaws.com/com.idmgroup.oed100.sounds.prod/wp-content/uploads/hourglass-e1688127290416-355x160.jpg — 200 — 9.8 KiB — 139 ms — http/1.1https://www.oed.com/images/chevron-right-white.svgwww.oed.com/images/chevron-right-wh... https://www.oed.com/images/chevron-right-white.svg — 200 — 1.9 KiB — 52 ms — http/1.1https://www.oed.com/images/close.svgwww.oed.com/images/close.svg https://www.oed.com/images/close.svg — 200 — 1.8 KiB — 50 ms — http/1.1https://www.googletagmanager.com/gtm.js?id=GTM-W55924Mwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-W55924M — 200 — 134.5 KiB — 193 ms — h2https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 200 — 42.0 KiB — 72 ms — h3https://fonts.gstatic.com/s/dmserifdisplay/v17/-nFnOHM81r4j6k0gjAW3mujVU2B2G_Bx0vrx52g.woff2fonts.gstatic.com/s/dmserifdisplay/... https://fonts.gstatic.com/s/dmserifdisplay/v17/-nFnOHM81r4j6k0gjAW3mujVU2B2G_Bx0vrx52g.woff2 — 200 — 17.5 KiB — 70 ms — h3https://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2 — 200 — 44.0 KiB — 74 ms — h3https://www.oed.com/images/clear.svgwww.oed.com/images/clear.svg https://www.oed.com/images/clear.svg — 200 — 2.2 KiB — 47 ms — http/1.1https://www.oed.com/images/search-white.svgwww.oed.com/images/search-white.svg https://www.oed.com/images/search-white.svg — 200 — 1.9 KiB — 46 ms — http/1.1https://www.oed.com/images/oup-logo-white.svgwww.oed.com/images/oup-logo-white.s... https://www.oed.com/images/oup-logo-white.svg — 200 — 7.4 KiB — 58 ms — http/1.1https://unpkg.com/@popperjs/core@2.11.8/dist/umd/popper.min.jsunpkg.com/@popperjs/core@2.11.8/dis... https://unpkg.com/@popperjs/core@2.11.8/dist/umd/popper.min.js — 200 — 7.6 KiB — 40 ms — h3https://unpkg.com/tippy.js@6.3.7/dist/tippy-bundle.umd.jsunpkg.com/tippy.js@6.3.7/dist/tippy... https://unpkg.com/tippy.js@6.3.7/dist/tippy-bundle.umd.js — 200 — 18.8 KiB — 56 ms — h3https://ouptag.scholarlyiq.com/ntpagetag.gif?js=1&ts=1776894617784.530&lc=https%3A%2F%2Fwww.oed.com%2F%3Ftl%3Dtrue&rs=800x600&cd=24&ln=en&tz=GMT&jv=0&oisbn=9780198605553&siqAccessType=Open&supplier_tag=IDM&siteid=OED&authzrequired=false&event_type=other&result_click=falseouptag.scholarlyiq.com/ntpagetag.gi... https://ouptag.scholarlyiq.com/ntpagetag.gif?js=1&ts=1776894617784.530&lc=https%3A%2F%2Fwww.oed.com%2F%3Ftl%3Dtrue&rs=800x600&cd=24&ln=en&tz=GMT&jv=0&oisbn=9780198605553&siqAccessType=Open&supplier_tag=IDM&siteid=OED&authzrequired=false&event_type=other&result_click=false — 200 — 375 B — 18 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/otSDKStub.js?did=019092d6-b3fd-7931-a3f3-0ec13b7939c3&data-document-language=truecdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/otSDKStub.js?did=019092d6-b3fd-7931-a3f3-0ec13b7939c3&data-document-language=true — 200 — 9.0 KiB — 69 ms — h2https://www.googletagmanager.com/gtag/js?id=G-4PQNDVV0GD&cx=c&gtm=4e64k0www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-4PQNDVV0GD&cx=c&gtm=4e64k0 — 200 — 173.1 KiB — 70 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/otSDKStub.jscdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/otSDKStub.js — 200 — 8.6 KiB — 59 ms — h2https://cdn-ukwest.onetrust.com/consent/019092d6-b3fd-7931-a3f3-0ec13b7939c3/019092d6-b3fd-7931-a3f3-0ec13b7939c3.jsoncdn-ukwest.onetrust.com/consent/019... https://cdn-ukwest.onetrust.com/consent/019092d6-b3fd-7931-a3f3-0ec13b7939c3/019092d6-b3fd-7931-a3f3-0ec13b7939c3.json — 200 — 2.2 KiB — 105 ms — h2https://cdn-ukwest.onetrust.com/consent/019092d6-b3fd-7931-a3f3-0ec13b7939c3/019092d6-b3fd-7931-a3f3-0ec13b7939c3.jsoncdn-ukwest.onetrust.com/consent/019... https://cdn-ukwest.onetrust.com/consent/019092d6-b3fd-7931-a3f3-0ec13b7939c3/019092d6-b3fd-7931-a3f3-0ec13b7939c3.json — 200 — 0 B — 104 ms — h2https://www.googletagmanager.com/td?id=G-4PQNDVV0GD&v=3&t=t&pid=1075175391&gtm=45je64k0v898300537za20gzb9105754865zd9105754865&seq=1&exp=0~115938465~115938468~117266401&dl=www.oed.com%2F&tdp=G-4PQNDVV0GD;98300537;1;6;0&frm=0&rtg=105754865&slo=12&hlo=4&lst=1&pcid=105754865&bt=0&ct=3&z=0www.googletagmanager.com/td?id=G-4P... https://www.googletagmanager.com/td?id=G-4PQNDVV0GD&v=3&t=t&pid=1075175391&gtm=45je64k0v898300537za20gzb9105754865zd9105754865&seq=1&exp=0~115938465~115938468~117266401&dl=www.oed.com%2F&tdp=G-4PQNDVV0GD;98300537;1;6;0&frm=0&rtg=105754865&slo=12&hlo=4&lst=1&pcid=105754865&bt=0&ct=3&z=0 — 204 — 18 B — 30 ms — h3https://www.oed.com/images/icons/favicon.icowww.oed.com/images/icons/favicon.ic... https://www.oed.com/images/icons/favicon.ico — 200 — 21.4 KiB — 48 ms — http/1.1https://geolocation.onetrust.com/cookieconsentpub/v1/geo/locationgeolocation.onetrust.com/cookiecons... https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location — 200 — 203 B — 29 ms — h2https://geolocation.onetrust.com/cookieconsentpub/v1/geo/locationgeolocation.onetrust.com/cookiecons... https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location — 200 — 127 B — 54 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/otBannerSdk.jscdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/otBannerSdk.js — 200 — 111.9 KiB — 48 ms — h2https://cdn-ukwest.onetrust.com/consent/019092d6-b3fd-7931-a3f3-0ec13b7939c3/0193217b-06d8-70e6-a59f-d2e4054e752a/en.jsoncdn-ukwest.onetrust.com/consent/019... https://cdn-ukwest.onetrust.com/consent/019092d6-b3fd-7931-a3f3-0ec13b7939c3/0193217b-06d8-70e6-a59f-d2e4054e752a/en.json — 200 — 12.3 KiB — 44 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/otFlat.jsoncdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/otFlat.json — 200 — 3.1 KiB — 32 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/v2/otPcCenter.jsoncdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/v2/otPcCenter.json — 200 — 12.6 KiB — 35 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/otCookieSettingsButton.jsoncdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/otCookieSettingsButton.json — 200 — 2.0 KiB — 30 ms — h2https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/otCommonStyles.csscdn-ukwest.onetrust.com/scripttempl... https://cdn-ukwest.onetrust.com/scripttemplates/202410.1.0/assets/otCommonStyles.css — 200 — 4.3 KiB — 32 ms — h2https://cdn-ukwest.onetrust.com/logos/static/ot_guard_logo.svgcdn-ukwest.onetrust.com/logos/stati... https://cdn-ukwest.onetrust.com/logos/static/ot_guard_logo.svg — 200 — 549 B — 30 ms — h2https://cdn-ukwest.onetrust.com/logos/static/ot_company_logo.pngcdn-ukwest.onetrust.com/logos/stati... https://cdn-ukwest.onetrust.com/logos/static/ot_company_logo.png — 200 — 19.2 KiB — 30 ms — h2https://cdn-ukwest.onetrust.com/logos/static/powered_by_logo.svgcdn-ukwest.onetrust.com/logos/stati... https://cdn-ukwest.onetrust.com/logos/static/powered_by_logo.svg — 200 — 2.6 KiB — 31 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-4PQNDVV0GD&gtm=45je64k0v898300537z89105754865za20gzb9105754865zd9105754865&_p=1776894617424&gcs=G100&gcd=13p3p3p2p5l1&npa=1&dma_cps=-&dma=1&gdid=dYWJhMj&are=1&cid=1957361694.1776894619&frm=0&pscdl=denied&rcb=5&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266401~117512542&sid=1776894618&sct=1&seg=0&dl=https%3A%2F%2Fwww.oed.com%2F%3Ftl%3Dtrue&dt=Oxford%20English%20Dictionary&en=page_view&_fv=1&_nsi=1&_ss=1&ep.oisbn=9780198605553&ep.siqAccessType=Open&ep.siteid=OED&ep.supplier_tag=IDM&ep.authzrequired=false&ep.event_type=other&ep.result_click=false&tfd=1618region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-4PQNDVV0GD&gtm=45je64k0v898300537z89105754865za20gzb9105754865zd9105754865&_p=1776894617424&gcs=G100&gcd=13p3p3p2p5l1&npa=1&dma_cps=-&dma=1&gdid=dYWJhMj&are=1&cid=1957361694.1776894619&frm=0&pscdl=denied&rcb=5&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266401~117512542&sid=1776894618&sct=1&seg=0&dl=https%3A%2F%2Fwww.oed.com%2F%3Ftl%3Dtrue&dt=Oxford%20English%20Dictionary&en=page_view&_fv=1&_nsi=1&_ss=1&ep.oisbn=9780198605553&ep.siqAccessType=Open&ep.siteid=OED&ep.supplier_tag=IDM&ep.authzrequired=false&ep.event_type=other&ep.result_click=false&tfd=1618 — 204 — 546 B — 89 ms — h2
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 343ms · 293KB · $5/mo
Unattributable
Other
Optional
Execution 113ms
Transfer 0 KB
Monthly Cost $2/mo
cdn-ukwest.onetrust.com
Other
Optional
Execution 95ms
Transfer 112 KB
Unused 54%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 68ms
Transfer 173 KB
Unused 41%
Monthly Cost $1/mo
www.oed.com
Other
Optional
Execution 66ms
Transfer 8 KB
Monthly Cost $1/mo

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

54% of cdn-ukwest.onetrust.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

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