City of London - E09000001ACTIVE

Emissions

• URL: https://www.cityoflondon.gov.uk/

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  CO2 estimatePage size

  Note: from 1st November 2022 we adopted version 3 of the methodology for estimating CO2 emissions. This will tend to lower CO2 estimates for a given size.

  Date checked	CO2 / grams	Rating	Page size	Energy
  2025-03-05	0.29	B	1.3MB	GREEN
  2025-02-11	0.29	B	1.3MB	GREEN
  2025-01-07	0.29	B	1.3MB	GREEN
  2024-12-10	0.29	B	1.3MB	GREEN
  2024-11-07	0.29	B	1.3MB	GREEN
  2024-10-16	0.28	B	1.3MB	GREEN
  2024-09-26	0.28	B	1.3MB	GREEN
  2024-08-07	0.28	B	1.3MB	GREEN
  2024-07-09	0.28	B	1.3MB	GREEN
  2024-06-11	0.27	B	1.3MB	GREEN
  2024-05-07	0.31	B	1.4MB	GREEN
  2024-04-11	0.30	B	1.4MB	GREEN
  2024-03-12	0.31	B	1.4MB	GREEN
  2024-02-07	0.31	B	1.4MB	GREEN
  2024-01-09	0.30	B	1.4MB	GREEN
  2023-12-05	0.30	B	1.4MB	GREEN
  2023-11-07	0.30	B	1.4MB	GREEN
  2023-10-11	0.30	B	1.4MB	GREEN
  2023-09-19	0.30	B	1.4MB	GREEN
  2023-08-08	0.21	B	958kB	GREEN
  2023-07-11	0.19	B	858kB	GREEN
  2023-06-13	0.17	A	784kB	GREEN
  2023-05-02	0.18	A	803kB	GREEN
  2023-04-05	0.17	A	786kB	GREEN
  2023-03-02	0.17	A	784kB	GREEN
  2023-02-07	0.17	A	779kB	GREEN
  2023-01-03	0.17	A	788kB	GREEN
  2022-12-01	0.35	C	1.6MB	GREEN
  2022-11-01	0.22	B	998kB	GREEN
  2022-10-04	0.54	D	993kB	GREEN
  2022-08-24	0.55	D	998kB	GREEN
  2022-07-21	0.75	E	1.4MB	GREEN
  2022-06-08	0.73	E	1.3MB	GREEN
  2022-05-05	0.72	E	1.3MB	GREEN
  2022-04-06	0.71	E	1.3MB	GREEN
  2022-03-01	0.80	E	1.5MB	GREEN
  2022-02-01	2.04	F	3.7MB	GREEN
  2022-01-04	1.81	F	3.3MB	GREEN
  2021-12-08	1.77	F	3.2MB	GREEN
  2021-11-02	1.86	F	3.4MB	GREEN
  2021-10-06	1.96	F	3.6MB	GREEN
  2021-08-31	1.89	F	3.5MB	GREEN
  2021-07-29	1.93	F	3.5MB	GREEN
  2021-06-30	1.96	F	3.6MB	GREEN
  2021-05-26	2.41	F	4.4MB	GREEN
  2021-03-09	1.43	F		GRID?

  Tip: Optimise images

  1. Things-to-do-couple-... is 111kB

  First, check that images are appropriately sized - you most likely don't need a 6000x4000 pixel image straight from a digital camera. In Windows, the Photos software will let you quickly shrink huge images and will give you an improvement.

  Next you could try using tinyjpg.com (JPG image) or tinypng.com (PNG image) to further optimise your image. This will strip out metadata that may be taking up lots of space.

  *This is an estimate from Google PageSpeed and you may get much better results than this in practice.

  Tip: Large files

  Aside from images, here are the biggest resources:

  1. Page is 217kB
  2. vendor.f179ff1b03ae7cb9c231.mjs is 210kB
  3. app.798ef61bcc4224742616.mjs is 190kB
  4. js?id=G-LFDLR9H724&l=dataLayer... is 139kB
  5. gtm.js?id=GTM-5C7LND is 121kB
  6. cookieControl-9.x.min.js is 97kB
  7. ?depth=3&entryFields=sys.id&la... is 51kB
  8. Oxygen-Bold.ttf is 31kB

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. Google Tag Manager uses 260kB
  2. Civic uses 97kB

  Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading.

  

External data links

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