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castle.co.uk
March 16, 2026

Your site's images could be 77% (3,831 KB) smaller. That's seconds of extra load time your visitors are waiting on.

Based on < internet speed. Download speed baselines from Chrome DevTools. Actual time may vary.
Start Over

Slow images are costing you visitors and revenue.

Every second of load time costs conversions. Research shows a 1-second delay reduces conversions by 7%. Your images could be 77% smaller — that's a meaningful speed gain ready for the taking.

Below is a breakdown of how much individual images could be reduced by using PicPerf. This analysis was run by loading the page on a simulated mobile device. Every image was then run through a series of optimizations to estimate potential savings.

"PicPerf is one of the best services I've used. You just add a prefix to your asset URLs, and then it just works."

Eric Barnes / Laravel News

"PicPerf optimizes the images for me and automatically uses the best format for the user. What more could you want?"

Jason Beggs / Design to Tailwind

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Original Size
Optimized Size
Savings
https://castle.co.uk/wp-content/uploads/2021/05/home-bg-1.png
567 KB
22 KB
96%
https://castle.co.uk/wp-content/uploads/2022/02/shutterstock_1469855276-mobile.png
416 KB
17 KB
96%
https://castle.co.uk/wp-content/uploads/2022/02/Retro-Background-mobile.png
186 KB
8 KB
96%
https://castle.co.uk/wp-content/uploads/2022/02/crypto-marketing-desktop.png
253 KB
14 KB
94%
https://castle.co.uk/wp-content/uploads/2022/02/HNK-BG-Mockup-mobile.png
118 KB
7 KB
94%
https://castle.co.uk/wp-content/uploads/2022/02/ecommerce-marketing-desktop.png
231 KB
13 KB
94%
https://castle.co.uk/wp-content/uploads/2022/02/shopify-development-desktop.png
400 KB
27 KB
93%
https://castle.co.uk/wp-content/uploads/2023/03/Artboard-1.jpg
96 KB
7 KB
93%
https://castle.co.uk/wp-content/uploads/2026/02/sergey-zolkin-_UeY8aTI6d0-unsplash-scaled.jpg
182 KB
27 KB
85%
https://castle.co.uk/wp-content/uploads/2026/02/dmitry-chernyshov-mP7aPSUm7aE-unsplash-scaled.jpg
181 KB
29 KB
84%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0000_Goldshield-Logo-web.png
14 KB
3 KB
78%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0021_Procter__Gamble_logo.svg.png
8 KB
2 KB
77%
https://castle.co.uk/wp-content/uploads/2026/03/joe-cleary-sIcAcPOgpMU-unsplash-scaled.jpg
448 KB
104 KB
77%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0002_supure-discount-codes.png
9 KB
2 KB
76%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0024_porsche.png
8 KB
2 KB
76%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0012_Ciate.png
10 KB
3 KB
72%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0016_Chemist4u.png
9 KB
2 KB
72%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0005_swapi_horizontal_logo_purple_cmyk.png
11 KB
3 KB
71%
https://castle.co.uk/wp-content/uploads/2023/03/Artboard-2.jpg
35 KB
10 KB
71%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0370.jpg
44 KB
13 KB
70%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0015_Joe-and-Sephs.png
18 KB
6 KB
69%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0003_HNK_MasterLogo.png
3 KB
1 KB
66%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0252.jpg
61 KB
22 KB
64%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0011_Flight-Centre.png
8 KB
3 KB
64%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0262.jpg
33 KB
12 KB
64%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0065.jpg
47 KB
17 KB
63%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0107.jpg
37 KB
14 KB
63%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0368.jpg
44 KB
17 KB
62%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0040.jpg
54 KB
21 KB
61%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0010_Cudos-Circular-Logo.png
4 KB
1 KB
61%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0186.jpg
54 KB
21 KB
61%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0277.jpg
43 KB
17 KB
60%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0007_fomo-logo.5320c330-1.png
5 KB
2 KB
60%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0242.jpg
38 KB
15 KB
60%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0018.jpg
62 KB
26 KB
59%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0006.jpg
63 KB
27 KB
57%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0264.jpg
46 KB
20 KB
57%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0017_NHS.png
4 KB
2 KB
57%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0014_SupremeCBD_Horizontal_1000x1000.png
4 KB
2 KB
56%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0359.jpg
48 KB
21 KB
56%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0009_Oral-B_logo.svg.png
5 KB
2 KB
56%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0356.jpg
37 KB
16 KB
56%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0164.jpg
56 KB
24 KB
56%
https://castle.co.uk/wp-content/uploads/2022/02/5-1-of-1.jpg
59 KB
26 KB
56%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0169.jpg
58 KB
26 KB
55%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0007_Click-Carmats-Master-Logo-Alpha-PRINT.png
6 KB
3 KB
54%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0117.jpg
64 KB
29 KB
54%
https://castle.co.uk/wp-content/uploads/2022/02/DSC06909.jpg
52 KB
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54%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0341.jpg
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53%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0350.jpg
62 KB
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53%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0001_logo.png
3 KB
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53%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0118.jpg
50 KB
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53%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0148.jpg
61 KB
30 KB
52%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0334.jpg
50 KB
25 KB
50%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0063.jpg
49 KB
24 KB
50%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0001_Master-Logo.png
5 KB
3 KB
50%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0002_MAPLE-2014.png
3 KB
1 KB
49%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0363.jpg
59 KB
31 KB
48%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0142.jpg
57 KB
30 KB
48%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0013_Doctor-4-u.png
3 KB
2 KB
47%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0256.jpg
55 KB
29 KB
46%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0008_Kays-Medical.png
3 KB
1 KB
46%
https://castle.co.uk/wp-content/uploads/2022/01/trustpilot.png
2 KB
1 KB
45%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0006_equipmart-logo.png
3 KB
2 KB
44%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0015.jpg
49 KB
28 KB
43%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0019_Hilton.png
2 KB
1 KB
41%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0013_HistoryMakr.png
2 KB
1 KB
41%
https://castle.co.uk/wp-content/uploads/2022/02/A27H0067.jpg
58 KB
35 KB
40%
https://castle.co.uk/wp-content/uploads/2022/01/facebook.png
3 KB
2 KB
39%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0025_Swan-Brand.png
8 KB
5 KB
39%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0003_Boohoo-Logo.png
2 KB
954 bytes
39%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0000_Padel-Co-Logo-Sortfarge.png
3 KB
2 KB
38%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0018_B-and-Q.png
1 KB
814 bytes
38%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0004_WowHydrate-Logo.png
2 KB
1 KB
36%
https://castle.co.uk/wp-content/uploads/2022/02/Logos_0020_Gillette-Logo.png
2 KB
1 KB
35%
https://castle.co.uk/wp-content/uploads/2022/01/google.png
2 KB
1 KB
34%
https://castle.co.uk/wp-content/uploads/2022/01/shopify.png
3 KB
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28%
https://castle.co.uk/wp-content/uploads/2022/01/forbes.png
2 KB
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27%
https://castle.co.uk/wp-content/uploads/2022/01/twitter.png
2 KB
2 KB
26%
https://castle.co.uk/wp-content/uploads/2022/01/bing.png
2 KB
1 KB
25%
https://castle.co.uk/wp-content/uploads/2022/01/gdpr.png
3 KB
2 KB
23%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/services-cards-right-arrow.svg
1 KB
922 bytes
23%
https://castle.co.uk/wp-content/uploads/2025/04/castle-white-1.svg
4 KB
3 KB
22%
https://castle.co.uk/wp-content/uploads/2025/04/castle-col.svg
4 KB
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22%
https://castle.co.uk/wp-content/uploads/2021/06/facebook.svg
375 bytes
318 bytes
15%
https://castle.co.uk/wp-content/uploads/2021/06/Instagram.svg
716 bytes
608 bytes
15%
https://castle.co.uk/wp-content/uploads/2021/06/LinkedIn.svg
718 bytes
609 bytes
15%
https://castle.co.uk/wp-content/uploads/2021/06/Twitter.svg
749 bytes
636 bytes
15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/trustfooter/eu_gdpr_compliant_logo.svg
10 KB
8 KB
15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/trustfooter/google-reviews.svg
6 KB
5 KB
15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/trustfooter/google_partner_logo.svg
6 KB
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15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/trustfooter/trustpilot.svg
4 KB
4 KB
15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/trustfooter/bing.svg
4 KB
3 KB
15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/scrolltotop.svg
291 bytes
247 bytes
15%
https://castle.co.uk/wp-content/themes/castle-theme/public/images/phone-icon-Rnd.svg
659 bytes
560 bytes
15%

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