Lodestone

1. Oct 2026

First measured October 2026.

1. Toast Electric, 0.78 MB
2. Electric Kiwi, 1.55 MB
3. Powershop, 1.57 MB
4. Meridian, 1.63 MB
5. Contact, 1.68 MB
6. Octopus Energy, 1.74 MB
7. Lodestone, 1.78 MB
8. Ecotricity, 2.01 MB
9. Grey Power Electricity, 2.32 MB
10. Genesis, 2.96 MB
11. Pulse, 3.75 MB
12. Nova, 3.93 MB
13. Mercury, 7.18 MB

1. B
2. D
3. D
4. D
5. D
6. D
7. D
8. E
9. E
10. F
11. F
12. F
13. G

LightestHeaviest

• Lodestone

• Phone

  2.4 MB

• Laptop

  2.6 MB

First visitiReturningi

1. Homepage

   /

   First visit

   Phone 2.4 MB

   Laptop 2.6 MB

   Returning

   Phone 0.12 MB

   Laptop 0.11 MB

2. Plans

   /pricing-plan

   Video: 4.7 MB, not counted in the weight.

   First visit

   Phone 2.6 MB

   Laptop at least 2.6 MB

   Returning

   Phone 0.31 MB

   Laptop at least 0.11 MB

3. Moving house

   /moving-house/

   First visit

   Phone 2.3 MB

   Laptop 2.2 MB

   Returning

   Phone 0.03 MB

   Laptop 0.03 MB

4. Power outages

   /network-power-outage/

   First visit

   Phone 2.3 MB

   Laptop 2.2 MB

   Returning

   Phone 0.03 MB

   Laptop 0.03 MB

5. Contact

   /contact-us/

   First visit

   Phone 2.3 MB

   Laptop 2.4 MB

   Returning

   Phone 0.06 MB

   Laptop 0.06 MB

• Lodestone’s own files

  This website

  0.49 MB21%

• Google Tag Manager

  Tag manager

  0.72 MB30%

• Unpkg

  Hosting and delivery

  0.57 MB24%

• Google reCAPTCHA

  Utility

  0.40 MB17%

• 4 more companies

  Facebook, Advertising and social, 0.26 MB
  PageSense, Analytics, 0.07 MB
  Adobe TypeKit, Hosting and delivery, 0.04 MB
  Other Google APIs/SDKs, Utility, 0.01 MB

  0.38 MB16%

• Unknown source

  0.03 MB1%

• Scripts

  2.2 MB

• Fonts

  0.22 MB

• Other

  0.10 MB

• Styles

  0.10 MB

• Images

  0.01 MB

1. Script · Unpkg

   index.js

   Every page

   0.47 MB

2. Script · Google reCAPTCHA

   recaptcha__en.js

   Every page

   0.36 MB

3. Script · Google Tag Manager

   googletagmanager.com/gtag/js (G-QWL2ZLYJGV)

   Every page

   0.20 MB

4. Script · Google Tag Manager

   googletagmanager.com/gtag/js (AW-18189632461)

   Every page

   0.17 MB

5. Script · Google Tag Manager

   gtm.js

   Every page

   0.16 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

   Unpkg: you choose whether it loads

   Every page · Unpkg

   up to 0.43 MB

2. Choice

   Google reCAPTCHA: you choose whether it loads

   Every page · Google reCAPTCHA

   up to 0.30 MB

3. Choice

   Check every marketing tag still earns its place: 3 companies

   Every page · Facebook, Google/Doubleclick Ads, PageSense

   up to 0.25 MB

4. Fix

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

   Every page · Lodestone

   up to 0.11 MB

5. Fix

   Cut 3 fonts down to the characters used

   Every page · Lodestone

   up to 0.06 MB

If this website had 100,000 page views a year, they would cause about 16 kg of carbon emissions.

Built to grade A (under 0.53 MB a page), the same page views would cause about 4.8 kg.

A grade C badge needs a typical page under 1.41 MB. Lodestone’s is 1.78 MB.