Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

Best Practices

100

SEO

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.12 s

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

1.61 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.

0.000

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

1.12 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.

1.62 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

9 PASS 2 REVIEW 2 FIX

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (966.1 KiB of 966.2 KiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

HTTP Caching

Action

No cache headers

FIX

No cache headers

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.

Image Optimization

46 images, 0 KB saveable

REVIEW

46 images, 0 KB saveable

All images are well-optimized

46 images 596 KB

0 oversized -0 KB

12 legacy format

0 missing dimensions CLS risk

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

Page Weight Budget

966 KB transferred, 65 requests

PASS

966 KB transferred, 65 requests

Page weighs 1.5 MB (966 KB transferred)

65 HTTP requests

Estimated 0.20 g CO2 per page load

966 KB transferred

65 requests

0.20 g CO2 per page load

Images 596.4 KiB 62%

JavaScript 179.3 KiB 19%

Fonts 130.7 KiB 14%

HTML 52.4 KiB 5%

Other 2.9 KiB 0%

CSS 2.1 KiB 0%

Other 1.5 KiB 0%

Other 728 B 0%

0 2.4 MB 4.9 MB

Under budget

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

301ms total JS execution

PASS

301ms total JS execution

https://www.ibtimes.co.uk/: 127ms CPU time

Unattributable: 99ms CPU time

https://choices.consentframework.com/js/pa/41059/c...: 75ms CPU time

Third-party scripts: 301ms (100% of total)

Main Thread Breakdown

Script Evaluation 37% Other 29% Style & Layout 20% Script Parsing & Compilation 6% Rendering 5% Parse HTML & CSS 4%

Script	Total	Scripting	Parse/Compile	Party
https://www.ibtimes.co.uk/	127ms	23ms	5ms	3rd
Unattributable	99ms	4ms	0ms	3rd
https://choices.consentframework.com/js/pa/41059/c/hF7a7/cmp	75ms	50ms	15ms	3rd

A+

Font Loading

4 fonts (131 KB)

PASS

4 fonts (131 KB)

4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

131 KB total

Render-blocking

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

DMSans-Regular.woff2 woff2 swap

Size 30 KB

Load time 20 ms

Start 407 ms

Risk FOUT — text flashes from fallback to web font

Genericons.woff woff swap

Size 14 KB

Load time 3 ms

Start 526 ms

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

JosefinSans-Bold.woff2 woff2 swap

Size 35 KB

Load time 48 ms

Start 631 ms

Risk FOUT — text flashes from fallback to web font

Newsreader16pt-Bold.woff2 woff2 swap

Size 52 KB

Load time 76 ms

Start 631 ms

Risk FOUT — text flashes from fallback to web font

Optimization checklist

Preload critical fonts (priority=high)
Use woff2 format for all fonts
Set font-display to swap, optional, or fallback
Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~4 KB and ~8 ms

A+

JS Bundles

8 scripts, 30 KB unused

PASS

8 scripts, 30 KB unused

https://choices.consentframework.com/js/pa/41059/c...: 30 KB unused (23%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 30 KB

30 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://choices.consentframework.com/js/pa/41059/c/hF7a7/cmp	134 KB	30 KB (23%)	✓	3rd
https://g.ibtimes.co.uk/sys/js/8279496ed805304963302a16b929757e.js?v=1776800058	37 KB	—	✓	3rd
https://cache.consentframework.com/js/pa/41059/c/hF7a7/stub	2 KB	—	✓	3rd
https://g.ibtimes.co.uk/www/js/adblock_prebid.js	1 KB	—	✓	3rd
https://stats.myibtimes.com/tool/ivtcheck?callback=fq_callback&ref=&cb=1776810926618	0 KB	—	✓	3rd
https://g.ibtimes.co.uk/sys/js/3a01ce5912471ea9604df7353ae5fd6f.js?v=1776800058	2 KB	—	✓	3rd
https://g.ibtimes.co.uk/front/js/counter.js?a=28	2 KB	—	✓	3rd
https://stats.myibtimes.com/counter/article?ack=sys_callback&site_id=1&c_what=section&a_id=0&r_id=0&c_id=0&c_url=/&referer=&device=desktop&a_editor=1&c_country=FR&xz=5&from=web&zyx=2&c_uque=1&c_ruque=1&c_visits=1&c_ts=nonpromoted&c_promo=&c_system=5&c_browser=1&c_agent=Mozilla/5.0%20(Macintosh;%20Intel%20Mac%20OS%20X%2010_15_7)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko)%20Chrome/147.0.0.0%20Safari/537.36	0 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

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

Page Weight Inventory

65 resources · 966 KB · 30 KB savings available

PASS

65 resources · 966 KB · 30 KB savings available

Within 1MB page-weight target

Got: 966 KB

64 third-party resources (100% of weight)

65 resources · 966.2 KiB · 64 third-party Within 1MB page-weight target

Image 62% · 599.3 KiB

JavaScript 19% · 179.3 KiB

Font 14% · 130.7 KiB

Document 5% · 52.4 KiB

Other 0% · 2.3 KiB

CSS 0% · 2.1 KiB

~30.4 KiB of savings available

Remove unused JavaScript: 30.4 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

65 resources			966.2 KiB

Network Waterfall

65 requests over 1146ms

INFO

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 301ms · 186KB · £3/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.ibtimes.co.uk www.ibtimes.co.uk	Other	127ms	52 KB	—	£1/mo	Optional
Unattributable Unattributable	Other	99ms	0 KB	—	£1/mo	Optional
choices.consentframework.com choices.consentframework.com	Other	75ms	134 KB	23%	£1/mo	Optional

www.ibtimes.co.uk

Other

Optional

Execution 127ms

Transfer 52 KB

Monthly Cost £1/mo

Unattributable

Other

Optional

Execution 99ms

Transfer 0 KB

Monthly Cost £1/mo

choices.consentframework.com

Other

Optional

Execution 75ms

Transfer 134 KB

Unused 23%

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

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.