Cambridge City Council - E07000008ACTIVE

Emissions

• URL: https://www.cambridge.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	1.39	F	6.4MB	GREEN
  2025-02-11	0.52	D	2.4MB	GREEN
  2025-01-07	0.63	D	2.9MB	GREEN
  2024-12-10	0.84	E	3.8MB	GREEN
  2024-11-07	0.40	C	1.8MB	GREEN
  2024-10-16	2.53	F	11.6MB	GREEN
  2024-09-26	1.48	F	6.8MB	GREEN
  2024-08-07	0.37	C	1.7MB	GREEN
  2024-07-09	0.33	B	1.5MB	GREEN
  2024-06-11	0.27	B	1.2MB	GREEN
  2024-05-07	0.26	B	1.2MB	GREEN
  2024-04-11	1.26	F	5.8MB	GREEN
  2024-03-12	0.28	B	1.3MB	GREEN
  2024-02-07	0.25	B	1.1MB	GREEN
  2024-01-09	0.28	B	1.3MB	GREEN
  2023-12-05	0.31	B	1.4MB	GREEN
  2023-11-07	0.30	B	1.4MB	GREEN
  2023-10-11	0.26	B	1.2MB	GREEN
  2023-09-19	0.17	A	779kB	GREEN
  2023-08-08	0.16	A	739kB	GREEN
  2023-07-11	0.17	A	791kB	GREEN
  2023-06-13	0.16	A	727kB	GREEN
  2023-05-02	0.16	A	717kB	GREEN
  2023-04-05	0.15	A	708kB	GREEN
  2023-03-02	0.22	B	1.0MB	GREEN
  2023-02-07	0.16	A	723kB	GREEN
  2023-01-03	0.94	F	4.3MB	GREEN
  2022-12-01	0.19	B	882kB	GREEN
  2022-11-01	1.10	F	5.0MB	GREEN
  2022-10-04	0.47	C	784kB	GRID?
  2022-08-24	0.48	C	800kB	GRID?
  2022-07-21	0.44	C	728kB	GRID?
  2022-06-08	0.42	C	695kB	GRID?
  2022-05-05	0.42	C	689kB	GRID?
  2022-04-06	0.42	C	700kB	GRID?
  2022-03-01	0.42	C	690kB	GRID?
  2022-02-01	0.54	D	900kB	GRID?
  2022-01-04	0.54	D	896kB	GRID?
  2021-12-08	0.54	D	899kB	GRID?
  2021-11-02	0.57	D	940kB	GRID?
  2021-10-06	0.54	D	896kB	GRID?
  2021-08-31	0.54	D	897kB	GRID?
  2021-07-29	0.54	D	896kB	GRID?
  2021-06-30	1.23	F	2.0MB	GRID?
  2021-05-26	1.22	F	2.0MB	GRID?
  2021-03-09	1.58	F		GRID?

  Tip: Optimise images

  We estimate potential to save at least 167kB* by optimising images:

  1. pexels-divinetechygi... is 2.8MB
  2. re-gen-plant-1.jpg is 1.4MB and could be 122kB smaller
  3. cropped2.jpg is 512kB
  4. canopy-300-470.png is 299kB
  5. 4dw-website-promo3.png is 158kB
  6. fanshawe-road-7-scal... is 151kB and could be 45kB smaller
  7. untitled-600-x-400-p... is 110kB

  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. js?id=G-2T2TF6M0K5&l=dataLayer... is 143kB
  2. fa-brands-400.woff2 is 118kB
  3. cc.js?renew=false&referer=www.... is 99kB

  The page uses 1 font which requires 118kB. Could system fonts be used instead?

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. Cookiebot uses 135kB
  2. Google Tag Manager uses 232kB
  3. azure.com uses 58kB

  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.

  

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