Customs

1. Oct 2026

First measured October 2026.

1. Civil Defence, at least 0.60 MB
2. Electoral Commission, at least 0.69 MB
3. MSD, 0.72 MB
4. Climate Change Commission, 0.74 MB
5. Treasury, 0.77 MB
6. Internal Affairs, at least 0.83 MB
7. Ministry of Education, 0.97 MB
8. MBIE, 0.99 MB
9. Police, 1.18 MB
10. Ministry of Health, 1.23 MB
11. Te Papa, 1.32 MB
12. Companies Office, 1.34 MB
13. EPA, 1.45 MB
14. NZTA, at least 1.49 MB
15. Ministry of Justice, 1.50 MB
16. Immigration NZ, at least 1.52 MB
17. DOC, 1.69 MB
18. Drive, 1.81 MB
19. StudyLink, 1.89 MB
20. Inland Revenue, 1.98 MB
21. Tenancy Services, 1.99 MB
22. Stats NZ, 2.08 MB
23. Customs, at least 2.09 MB
24. MPI, 2.18 MB
25. Kāinga Ora, 2.25 MB
26. Sorted, 2.40 MB
27. Health NZ, at least 2.68 MB
28. Fire and Emergency, 3.16 MB
29. Earth Sciences New Zealand, 3.20 MB
30. Public Trust, at least 3.42 MB
31. Work and Income, 4.41 MB
32. NZQA, 5.34 MB
33. ACC, 8.73 MB
34. 100% Pure New Zealand, at least 11.07 MB

1. B
2. B
3. B
4. B
5. B
6. B
7. B
8. C
9. C
10. C
11. C
12. C
13. D
14. D
15. D
16. D
17. D
18. D
19. E
20. E
21. E
22. E
23. E
24. E
25. E
26. E
27. F
28. F
29. F
30. F
31. F
32. G
33. G
34. G

LightestHeaviest

• Customs

• Phone

  2.01 MB

• Laptop

  3.10 MB

First pageiLater pagei

1. Homepage

   /

   First page

   Phone 2.01 MB

   Laptop 3.10 MB

   Later page

   Phone 1.02 MB

   Laptop 2.11 MB

2. Services

   /travel-to-and-from-new-zealand/

   First page

   Phone 1.79 MB

   Laptop 1.79 MB

   Later page

   Phone 0.80 MB

   Laptop 0.80 MB

3. News

   /about-us/news/

   First page

   Phone 1.54 MB

   Laptop 1.54 MB

   Later page

   Phone 0.56 MB

   Laptop 0.56 MB

4. About

   /about-us/

   First page

   Phone 1.70 MB

   Laptop 1.70 MB

   Later page

   Phone 0.71 MB

   Laptop at least 0.71 MB

5. Contact

   /contact-us/

   First page

   Phone at least 4.73 MB

   Laptop 3.44 MB

   Later page

   Phone 3.73 MB

   Laptop at least 2.45 MB

• Customs’ own files

  This website

  1.59 MB79%

• Google Tag Manager

  Tag manager

  0.31 MB15%

• Adobe TypeKit

  Hosting and delivery

  0.11 MB5%

• Unknown source

  0.01 MB0%

• Images

  1.00 MB

• Scripts

  0.41 MB

• Fonts

  0.34 MB

• Other

  0.23 MB

• Styles

  0.02 MB

1. Image · Customs

   lyttelton-port-photo.png

   Contact

   1.09 MB

2. Image · Customs

   nz-landscape-1.jpg

   Services

   0.57 MB

3. Image · Customs

   ports-cargo-4.jpg

   About

   0.49 MB

4. Image · Customs

   hawk-v-2.jpg

   News

   0.34 MB

5. Image · Customs

   ports-cargo-9.jpg

   Homepage

   0.27 MB

Fix

Nothing a visitor would notice

Choice

Removes or delays something

Worked out on a phone and a laptop. The icons show where each saving applies.

1. Fix

   Compress 17 images that are already the right size

   Homepage and 1 more · Customs Phone

   Homepage, Contact

   Saves most on the Contact page

   at least 0.34 MB

2. Fix

   Resize and compress 11 images to the size screens show them

   Homepage and 1 more · Customs

   Homepage, Contact

   Saves most on the homepage

   at least 0.30 MB

3. Fix

   Compress 5 of your own text files

   Every page · Customs

   Saves this on every page

   up to 0.15 MB

4. Fix

   Cut 1 font down to the characters used

   Every page · Customs

   Saves this on every page

   up to 0.14 MB

5. Fix

   Ship less of your own code: scripts and styles that did not run while the homepage loaded

   Every page · Customs

   Saves this on every page

   up to 0.08 MB

If this website had 100,000 page views a year, they would cause about 19 kg of carbon emissions.

Built to grade A (an average page view of 0.53 MB or less), the same page views would cause about 4.8 kg.

A grade C badge needs an average page view of 1.41 MB or less. Customs’ is at least 2.09 MB.