University of Birmingham - 10006840ACTIVE

Emissions

• URL: https://www.birmingham.ac.uk/

  Time to load: 0.5 seconds

  Date checked	CO2 / grams	Page size	Energy
  2023-12-07	0.34	1.4MB	GRID?
  2022-09-06	0.77	1.3MB	GRID?
  2022-06-09	1.29	2.1MB	GRID?
  2022-04-12	1.30	2.2MB	GRID?
  2022-02-01	0.83	1.4MB	GRID?
  2021-11-03	0.92	1.5MB	GRID?
  2021-10-06	0.87	1.4MB	GRID?
  2021-09-01	0.76	1.3MB	GRID?
  2021-07-29	0.84	1.4MB	GRID?
  2021-06-30	0.88	1.5MB	GRID?
  2021-06-01	0.87	1.4MB	GRID?

  Tip: Optimise images

  We estimate potential to save at least 25kB* by optimising images:

  1. curiosity-vault-podc... is 133kB
  2. covid-memorial-wall-... is 129kB
  3. degree-congregations... is 123kB
  4. cop28-iceberg-000000... is 117kB
  5. uob-125-years-hero-2... is 105kB
  6. brazil-institute-fff... is 97kB
  7. aston-webb-180x180.jpg is 37kB and could be 25kB 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. gtm.js?id=GTM-MM4Z3Q is 126kB
  2. otBannerSdk.js is 94kB
  3. styles.css?versionId=2071822 is 59kB
  4. all.min.js?versionId=2073413&v... is 52kB

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. Optanon uses 167kB
  2. Google Tag Manager uses 126kB

  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.