Bolton Metropolitan Borough Council - E08000001ACTIVE

Emissions

• URL: https://www.bolton.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	1.05	F	4.8MB	GREEN
  2025-02-11	0.37	C	1.7MB	GREEN
  2025-01-07	0.37	C	1.7MB	GREEN
  2024-12-10	1.03	F	4.7MB	GREEN
  2024-11-07	0.95	F	4.4MB	GREEN
  2024-10-16	0.63	D	2.9MB	GREEN
  2024-09-26	0.63	D	2.9MB	GREEN
  2024-08-07	0.42	C	1.9MB	GREEN
  2024-07-09	0.55	D	2.5MB	GREEN
  2024-06-11	0.29	B	1.3MB	GREEN
  2024-05-07	0.49	C	2.2MB	GREEN
  2024-04-11	0.49	C	2.2MB	GREEN
  2024-03-12	0.49	C	2.2MB	GREEN
  2024-02-07	0.50	D	2.3MB	GREEN
  2024-01-09	0.50	D	2.3MB	GREEN
  2023-12-05	0.69	E	3.2MB	GREEN
  2023-11-07	0.74	E	3.4MB	GREEN
  2023-10-11	0.75	E	3.4MB	GREEN
  2023-09-19	0.60	D	2.7MB	GREEN
  2023-08-08	0.59	D	2.7MB	GREEN
  2023-07-11	0.57	D	2.6MB	GREEN
  2023-06-13	0.62	D	2.8MB	GREEN
  2023-05-02	0.39	C	1.8MB	GREEN
  2023-04-05	0.40	C	1.8MB	GREEN
  2023-03-02	0.31	B	1.4MB	GREEN
  2023-02-07	0.58	D	2.7MB	GREEN
  2023-01-03	0.55	D	2.5MB	GREEN
  2022-12-01	0.59	D	2.7MB	GREEN
  2022-11-01	0.45	C	2.0MB	GREEN
  2022-10-04	1.01	F	1.8MB	GREEN
  2022-08-24	1.24	F	2.3MB	GREEN
  2022-07-21	1.24	F	2.3MB	GREEN
  2022-06-08	1.02	F	1.9MB	GREEN
  2022-05-05	1.51	F	2.8MB	GREEN
  2022-04-06	1.51	F	2.8MB	GREEN
  2022-03-01	1.19	F	2.2MB	GREEN
  2022-02-01	0.96	F	1.7MB	GREEN
  2022-01-04	1.88	F	3.4MB	GREEN
  2021-12-08	1.13	F	2.1MB	GREEN
  2021-11-02	0.66	E	1.2MB	GREEN
  2021-10-06	0.82	E	1.5MB	GREEN
  2021-08-31	0.53	D	970kB	GREEN
  2021-07-29	1.43	F	2.6MB	GREEN
  2021-06-30	1.28	F	2.4MB	GREEN
  2021-05-26	0.92	F	1.7MB	GREEN
  2021-03-09	1.25	F		GRID?

  Tip: Optimise images

  We estimate potential to save at least 159kB* by optimising images:

  1. Fostering_featured_a... is 1.7MB
  2. Town_Hall_890_x_1023... is 1.3MB
  3. Gala_featured_1023_x... is 799kB
  4. bolton_skyline_at_ni... is 123kB
  5. 375w_66.jpg is 121kB and could be 70kB smaller
  6. 375w_380w_winter_fes... is 75kB and could be 45kB smaller
  7. 375w_380w_hotel_bolt... is 74kB and could be 45kB smaller

  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. 135.4755a93fc5065f342da8.js is 89kB
  2. 3.4755a93fc5065f342da8.js is 76kB
  3. cookie-consent.js is 58kB

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. Browsealoud uses 292kB
  2. freeprivacypolicy.com uses 58kB
  3. Google Fonts uses 38kB
  4. Google CDN uses 31kB

  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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