Sheffield Hallam University - 10005790ACTIVE

Emissions

• URL: https://www.shu.ac.uk/

  Time to load: 1.2 seconds

  Date checked	CO2 / grams	Page size	Energy
  2023-12-07	0.74	3.0MB	GRID?
  2022-06-09	0.14	234kB	GRID?
  2022-04-12	1.74	2.9MB	GRID?
  2022-02-01	1.75	2.9MB	GRID?
  2021-11-03	1.56	2.6MB	GRID?
  2021-10-06	1.44	2.4MB	GRID?
  2021-09-01	1.28	2.1MB	GRID?
  2021-07-29	1.27	2.1MB	GRID?
  2021-06-30	1.32	2.2MB	GRID?
  2021-06-01	1.30	2.2MB	GRID?

  Tip: Optimise images

  We estimate potential to save at least 158kB* by optimising images:

  1. screenshot-20210928-... is 165kB
  2. accommodation.jpg is 114kB
  3. alice-bullas-awrc_we... is 109kB and could be 15kB smaller
  4. graduation-2022.jpg is 102kB and could be 14kB smaller
  5. tef-gold_web.jpg is 56kB and could be 11kB smaller
  6. tef-gold_web.jpg?iar... is 56kB and could be 11kB smaller
  7. en-2022-sma.jpg is 40kB and could be 28kB smaller
  8. en-2022-uoty.jpg is 36kB and could be 25kB smaller
  9. ukat-oss.jpg is 27kB and could be 15kB smaller
  10. tef-2023-gold.jpg is 25kB and could be 14kB smaller
  11. the-2021-oeu.jpg is 22kB and could be 12kB smaller
  12. the-2022-uoty.jpg is 22kB and could be 12kB 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. chunk-vendors.js is 143kB
  2. gtm.js?id=GTM-MKVMPL is 134kB
  3. main.MTdjYzNiZDU2MA.js is 108kB
  4. sitecore.min.js is 94kB
  5. js?id=G-QQLXK8VXKY&l=dataLayer... is 93kB
  6. FFMetaSerifWebProMedium.woff2 is 92kB

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. Google Tag Manager uses 295kB
  2. TikTok uses 148kB
  3. Google Maps uses 171kB
  4. Facebook uses 168kB
  5. ttl.ai uses 99kB
  6. Hotjar uses 61kB

  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.