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https://www.sitevitals.co.uk

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Last scan:
Mobile test

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Performance score ⓘ
71 /100
Needs improvement
↓ 2 points over 30 days

Performance is being held back by slow LCP.

100 75 50 25 0
Sep 1 Sep 19 Oct 12

Showing the most recent 30 checks.

Current

Performance
71
LCP
4.98s
Page weight
0.90MB

30-day movement

Performance
↓ 2
LCP
↑ 0.54s
Page weight
↑ 0.38MB

What needs attention

2 issues High impact

What is slow

The largest visible element appears to be text.

The largest delay is in Element render delay (2,294ms).

Likely cause

The text was available, but the browser waited before painting it. A web font, render-blocking CSS, JavaScript or an entrance animation is a likely cause.

Best first fix

Check the element’s font, CSS and visibility behaviour first.

  1. 1 Check whether the element uses a web font that loads late.
  2. 2 Preload the critical font and use font-display: swap.
  3. 3 Remove entrance animations or JavaScript-controlled reveals above the fold.
  4. 4 Reduce render-blocking CSS and defer non-critical JavaScript.
Evidence and timing breakdown

Affected element

section.sv-hero > div.sv-hero-shell > div.sv-hero-copy > p.mt-[22px]

Paint phase analysis

TTFB

16ms

Discovery

0ms

Download

0ms

Render

2,294ms

3 images can be improved

Lighthouse found potential savings from compression, sizing or more appropriate image delivery.

Est. saving 226.73 KB

See the full image recommendations below .

Images you can improve now

3 images Est. saving 226.73 KB

geometric-shapes-footer.png

Original: 205.96 KB • Save: 153.91 KB (75%)

Displayed at 218px on mobile A smaller responsive image could reduce mobile download size.

Mobile target: 218px
Why this was flagged
  • Using a modern image format (WebP, AVIF) or increasing the image compression could improve this image's download size.

email-window.webp

Original: 68.23 KB • Save: 57.32 KB (84%)

Displayed at 342px on mobile but served at 1497px. A smaller responsive image could reduce mobile download size.

Mobile target: 342px
Why this was flagged
  • This image file is larger than it needs to be (1497x934) for its displayed dimensions (599x374). Use responsive images to reduce the image download size.

geometric-shapes-wide.webp

Original: 30.99 KB • Save: 15.5 KB (50%)

Displayed at 412px on mobile but served at 1286px. A smaller responsive image could reduce mobile download size.

Mobile target: 412px
Why this was flagged
  • This image file is larger than it needs to be (1286x1257) for its displayed dimensions (1147x704). Use responsive images to reduce the image download size.

Key performance metrics

Comparing with Oct 11

LCP

Largest Contentful Paint

4.98 s
Poor

↓ 0s vs 4.98s

CLS

Cumulative Layout Shift

0.000
Good

↓ 0.003 vs 0.003

TBT

Total Blocking Time

26 ms
Good

↑ 18.5ms vs 8ms

TTFB

Time to First Byte

16 ms
Good

↓ 5ms vs 21ms

Page weight

Total transfer size

0.90 MB
Good

↓ 0MB vs 0.90MB

✓ CLS passes (0.000)
✓ Server response (TTFB) is fast (16ms)
✓ No significant render-blocking
✓ No redirects detected
✓ JS execution time (146ms)
✓ Total page size (0.9MB)
✓ Static assets are well-cached

LCP

How quickly the largest visible element appears.

4.98s

Target: ≤ 2.5 seconds

CLS

How visually stable the page is while loading.

0.000

Target: ≤ 0.1

TBT

How long the browser main thread is blocked.

26ms

Target: ≤ 200ms

TTFB

How quickly the server starts responding.

16ms

Target: ≤ 600ms

SI

How quickly the page becomes visually complete.

4.75s

Target: ≤ 3.4 seconds

JS execution

Time spent parsing, compiling and running JavaScript.

146ms

Target: < 2 seconds

Render blocking

Time delayed by critical CSS or JavaScript.

26ms

Target: < 200ms

Page weight

Compressed size of resources downloaded by the page.

0.90MB

Target: < 2MB

Unsized images

Images missing explicit width and height attributes.

1

Target: 0

Image saving

Potential saving from better image formats and sizing.

226.73KB

Target: 0 bytes

Caching saving

Potential saving from better browser caching.

0bytes

Target: 0 bytes

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