York St John University - 10007713ACTIVE

Emissions

• URL: https://www.yorksj.ac.uk/

  Time to load: 1.4 seconds

  Date checked	CO2 / grams	Page size	Energy
  2023-12-07	0.58	2.7MB	GREEN
  2022-09-06	0.96	1.8MB	GREEN
  2022-06-09	0.96	1.8MB	GREEN
  2022-04-12	1.10	2.0MB	GREEN
  2022-02-01	1.06	1.9MB	GREEN
  2021-11-03	1.11	2.0MB	GREEN
  2021-10-06	1.09	2.0MB	GREEN
  2021-09-01	1.10	2.0MB	GREEN
  2021-07-29	1.04	1.9MB	GREEN
  2021-06-30	1.00	1.8MB	GREEN
  2021-06-01	1.00	1.8MB	GREEN

  Tip: Optimise images

  We estimate potential to save at least 598kB* by optimising images:

  1. MicrosoftTeams-image... is 600kB and could be 563kB smaller
  2. Open-Day-2023-28.jpg is 141kB
  3. Students-on-Campus-4... is 100kB and could be 11kB smaller
  4. Conversations-in-soc... is 92kB
  5. Decision-Day-2023-6.... is 92kB and could be 13kB smaller
  6. Campus-life.jpg is 86kB and could be 11kB 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. app.js is 122kB
  2. main.MTdjYzNiZDU2MQ.js is 113kB
  3. main.MTdjYzNiZDU2MA.js is 109kB
  4. gtm.js?id=GTM-TJ9H9B is 103kB
  5. js?id=G-KNM5HKKSRW&l=dataLayer... is 94kB

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. TikTok uses 265kB
  2. Google Tag Manager uses 197kB
  3. terminalfour.net uses 878kB
  4. FontAwesome CDN uses 182kB
  5. Facebook uses 96kB
  6. Hotjar uses 65kB
  7. squiz.cloud uses 52kB

  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.