Sheffield City Council - `E08000019`ACTIVE

Emissions

Time to load: 0.8 seconds

Date checked	CO2 / grams	Rating	Page size	Energy
2024-12-10	0.36	C	1.4MB	GRID?
2024-11-07	0.36	C	1.4MB	GRID?
2024-10-16	0.36	C	1.4MB	GRID?
2024-09-26	0.36	C	1.4MB	GRID?
2024-08-07	0.36	C	1.4MB	GRID?
2024-07-09	0.37	C	1.5MB	GRID?
2024-06-11	0.36	C	1.4MB	GRID?
2024-05-07	0.36	C	1.4MB	GRID?
2024-04-11	0.28	B	1.1MB	GRID?
2024-03-12	0.40	C	1.6MB	GRID?
2024-02-07	0.43	C	1.7MB	GRID?
2024-01-09	0.43	C	1.7MB	GRID?
2023-12-05	0.42	C	1.7MB	GRID?
2023-11-07	0.45	C	1.8MB	GRID?
2023-10-11	0.46	C	1.8MB	GRID?
2023-09-19	0.45	C	1.8MB	GRID?
2023-08-08	0.36	C	1.4MB	GRID?
2023-07-11	0.42	C	1.7MB	GRID?
2023-06-13	0.44	C	1.8MB	GRID?
2023-05-02	0.38	C	1.5MB	GRID?
2023-04-05	0.38	C	1.5MB	GRID?
2023-03-02	0.39	C	1.5MB	GRID?
2023-02-07	0.38	C	1.5MB	GRID?
2023-01-03	0.38	C	1.5MB	GRID?
2022-12-01	0.37	C	1.5MB	GRID?
2022-11-01	0.36	C	1.4MB	GRID?
2022-10-04	0.86	F	1.4MB	GRID?
2022-08-24	0.84	E	1.4MB	GRID?
2022-07-21	0.84	E	1.4MB	GRID?
2022-06-08	1.01	F	1.7MB	GRID?
2022-05-05	0.90	F	1.5MB	GRID?
2022-04-06	0.90	F	1.5MB	GRID?
2022-03-01	0.90	F	1.5MB	GRID?
2022-02-01	0.90	F	1.5MB	GRID?
2022-01-04	0.90	F	1.5MB	GRID?
2021-12-08	0.81	E	1.3MB	GRID?
2021-11-02	0.97	F	1.6MB	GRID?
2021-10-06	0.94	F	1.6MB	GRID?
2021-08-31	0.94	F	1.6MB	GRID?
2021-07-29	0.91	F	1.5MB	GRID?
2021-06-30	0.93	F	1.5MB	GRID?
2021-05-27	0.96	F	1.6MB	GRID?
2021-03-09	1.06	F		GRID?

Tip: Optimise images

town_hall_1000.jpg?i... is 580kB
sheffield-web-banner... is 49kB

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:

vendor-list.json is 159kB
cookieControl-9.8.min.js is 94kB
gtm.js?id=GTM-NS2SMVPX is 88kB
SignupOverlay.js is 73kB
jquery-ui.min.js is 68kB
js_4VvZ2sF9xOEuVH70lTgkTCjyZhV... is 58kB
Wayfarer-Regular.woff is 49kB
memvYaGs126MiZpBA-UvWbX2vVnXBb... is 44kB

Tip: Limit third-party code

Here are the largest sources of third-party code:

Civic uses 255kB
Google Tag Manager uses 88kB
govdelivery.com uses 74kB
jQuery CDN uses 68kB
Google Fonts uses 47kB

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.