nib

1. Oct 2026

First measured October 2026.

1. Tower, 0.60 MB
2. AA Insurance, at least 0.60 MB
3. Vero, 0.87 MB
4. Southern Cross Pet Insurance, 1.18 MB
5. AMI, 1.29 MB
6. Pinnacle Life, 2.03 MB
7. Cover-More, 2.25 MB
8. Partners Life, 2.27 MB
9. Initio, 2.40 MB
10. nib, 2.58 MB
11. FMG, 2.73 MB
12. Southern Cross Life, 2.99 MB
13. AIA, 3.14 MB
14. Fidelity Life, 3.45 MB
15. State, 3.67 MB
16. Chubb, at least 4.35 MB
17. MAS, 4.87 MB
18. UniMed, 5.29 MB

1. B
2. B
3. B
4. C
5. C
6. E
7. E
8. E
9. E
10. F
11. F
12. F
13. F
14. F
15. F
16. F
17. F
18. G

LightestHeaviest

• nib

• Phone

  2.68 MB

• Laptop

  2.69 MB

First pageiLater pagei

1. Homepage

   /

   First page

   Phone 2.68 MB

   Laptop 2.69 MB

   Later page

   Phone 0.08 MB

   Laptop 0.09 MB

2. Insurance

   /life-cover-options

   First page

   Phone 2.76 MB

   Laptop 2.74 MB

   Later page

   Phone 0.15 MB

   Laptop 0.14 MB

3. Claims

   /claims

   First page

   Phone 2.58 MB

   Laptop 2.81 MB

   Later page

   Phone 0.20 MB

   Laptop 0.38 MB

4. NZ Health Insurance

   /health-insurance

   First page

   Phone 3.69 MB

   Laptop 3.77 MB

   Later page

   Phone 1.13 MB

   Laptop 1.02 MB

5. Contact

   /contact-us

   First page

   Phone 3.65 MB

   Laptop 4.17 MB

   Later page

   Phone 2.37 MB

   Laptop 2.90 MB

• nib’s own files

  This website

  0.86 MB32%

• Google Tag Manager

  Tag manager

  0.84 MB32%

• TikTok

  Advertising and social

  0.29 MB11%

• Facebook

  Advertising and social

  0.22 MB8%

• 6 more companies

  ContentSquare, Analytics, 0.17 MB
  Optimizely, Analytics, 0.10 MB
  Tealium, Tag manager, 0.02 MB
  Bing Ads, Advertising and social, 0.02 MB
  Hotjar, Analytics, 0.01 MB
  Yahoo!, Advertising and social, 0.01 MB

  0.32 MB12%

• Unknown source

  0.14 MB5%

• Scripts

  2.48 MB

• Fonts

  0.12 MB

• Other

  0.04 MB

• Images

  0.03 MB

• Styles

  0.01 MB

1. Script · YouTube

   base.js (/s/player/21090930/player_embed_es6_tcc.vflset/en_US/base.js)

   NZ Health Insurance

   0.48 MB

2. Script · YouTube

   base.js (/s/player/0229cd64/player_embed_es6.vflset/en_US/base.js)

   NZ Health Insurance

   0.48 MB

3. Image · nib

   Help_centre_hero_desktop_large.jpg

   Contact

   0.40 MB

4. Script · nib

   8b7a71e4b4c151be17b764a15e88131ace82fb1f-639c5d08799891ccb362.js

   Contact

   0.38 MB

5. Image · nib

   desktop_2x.png

   Claims

   0.31 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. Choice

   YouTube (Video): you choose whether it loads

   NZ Health Insurance · YouTube

   Saves most on the NZ Health Insurance page

   0.96 MB

2. Choice

   Check every marketing tag still earns its place: 8 companies

   Every page · several companies

   Saves this on every page

   up to 0.76 MB

3. Fix

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

   Homepage and 3 more · nib

   Homepage, Insurance, Claims, NZ Health Insurance

   Saves most on the homepage

   up to 0.46 MB

4. Fix

   Compress 29 of your own text files

   Every page · nib

   Saves this on every page

   at least 0.20 MB

5. Fix

   Send next pages as differences from the last one (shared compression dictionaries), in Chrome, Edge and other Chromium browsers. Safari and Firefox do not support it yet.

   Insurance and 3 more · nib

   Insurance, Claims, NZ Health Insurance, Contact

   Saves most on the Contact page

   up to 0.13 MB

If this website had 100,000 page views a year, they would cause about 23 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. nib’s is 2.58 MB.