London Borough of Harrow - E09000015ACTIVE

Emissions

• URL: https://www.harrow.gov.uk/

  Time to load: 0.9 seconds

  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	1.17	F	5.4MB	GREEN
  2025-02-11	4.05	F	18.6MB	GREEN
  2025-01-07	2.19	F	10.0MB	GREEN
  2024-12-10	1.93	F	8.9MB	GREEN
  2024-11-07	1.21	F	5.5MB	GREEN
  2024-10-16	2.67	F	12.2MB	GREEN
  2024-09-26	0.50	D	2.3MB	GREEN
  2024-08-07	0.96	F	4.4MB	GREEN
  2024-07-09	0.82	E	3.8MB	GREEN
  2024-06-11	1.26	F	5.8MB	GREEN
  2024-05-07	0.80	E	3.7MB	GREEN
  2024-04-11	0.82	E	3.8MB	GREEN
  2024-03-12	0.49	C	2.2MB	GREEN
  2024-02-07	1.95	F	8.9MB	GREEN
  2024-01-09	1.50	F	6.9MB	GREEN
  2023-12-05	1.45	F	6.7MB	GREEN
  2023-11-07	1.67	F	7.6MB	GREEN
  2023-10-11	2.58	F	11.8MB	GREEN
  2023-09-19	3.41	F	15.6MB	GREEN
  2023-08-08	1.78	F	8.1MB	GREEN
  2023-07-11	3.02	F	13.8MB	GREEN
  2023-06-13	0.89	F	4.1MB	GREEN
  2023-05-02	2.10	F	9.6MB	GREEN
  2023-04-05	0.90	F	4.1MB	GREEN
  2023-03-02	0.96	F	4.4MB	GREEN
  2023-02-07	0.28	B	1.3MB	GREEN
  2023-01-03	1.49	F	6.8MB	GREEN
  2022-12-01	0.52	D	2.4MB	GREEN
  2022-11-01	0.49	C	2.2MB	GREEN
  2022-10-04	1.13	F	2.1MB	GREEN
  2022-08-24	2.47	F	4.5MB	GREEN
  2022-07-21	2.33	F	4.3MB	GREEN
  2022-06-08	1.07	F	2.0MB	GREEN
  2022-05-05	2.55	F	4.7MB	GREEN
  2022-04-06	2.05	F	3.8MB	GREEN
  2022-03-01	0.86	F	1.6MB	GREEN
  2022-02-01	3.31	F	6.1MB	GREEN
  2022-01-04	0.31	B	567kB	GREEN
  2021-12-08	3.31	F	6.1MB	GREEN
  2021-11-02	1.06	F	1.9MB	GREEN
  2021-10-06	1.06	F	1.9MB	GREEN
  2021-08-31	1.07	F	2.0MB	GREEN
  2021-07-29	1.03	F	1.9MB	GREEN
  2021-06-30	1.07	F	2.0MB	GREEN
  2021-06-10	1.54	F	2.8MB	GREEN
  2021-05-27	1.54	F	2.8MB	GREEN
  2021-03-10	0.87	F		GRID?

  Tip: Optimise images

  We estimate potential to save at least 760kB* by optimising images:

  1. Kenmore_Children_s_C... is 2.1MB
  2. 000_facebook_post_fi... is 1.2MB and could be 760kB smaller
  3. Flag_1.jpg is 346kB
  4. Byron_regeneration.jpg is 136kB
  5. IMG_20241024_WA0000.... is 130kB

  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. video.min.js?13fff19dd2fbea8a8... is 188kB
  2. icons.data.svg.css?13fff19dd2f... is 179kB
  3. js?id=G-M5S4MNQ3H6&l=dataLayer... is 120kB
  4. icons.data.svg.css?13fff19dd2f... is 100kB
  5. gtm.js?id=GTM-5NHG2V3 is 100kB

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. Google Tag Manager uses 220kB
  2. Hotjar uses 64kB
  3. Cludo uses 53kB
  4. Google Fonts uses 38kB
  5. ecal.com uses 37kB
  6. Google CDN uses 32kB
  7. Cloudflare CDN uses 30kB

  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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