Cardiff University - 10007814ACTIVE

Emissions

• URL: https://www.cardiff.ac.uk/

  Time to load: 0.8 seconds

  Date checked	CO2 / grams	Page size	Energy
  2023-12-07	0.37	1.5MB	GRID?
  2022-09-06	0.87	1.4MB	GRID?
  2022-06-09	0.75	1.2MB	GRID?
  2022-04-12	0.74	1.2MB	GRID?
  2022-02-01	0.64	1.1MB	GRID?
  2021-11-03	0.57	952kB	GRID?
  2021-10-06	0.64	1.1MB	GRID?
  2021-09-01	0.64	1.1MB	GRID?
  2021-07-29	0.64	1.1MB	GRID?
  2021-06-30	0.52	861kB	GRID?
  2021-06-01	0.71	1.2MB	GRID?

  Tip: Optimise images

  1. Jade-Rushby-in-New-Z... is 55kB
  2. Tafwyl_panoramic-edi... is 52kB
  3. 20221002_PT-CardiffU... is 35kB

  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. Page is 288kB
  2. fa-light-300.d3271a56.woff2 is 184kB
  3. main.css is 182kB
  4. fa-solid-900.54dfc8f5.woff2 is 137kB
  5. gtm.js?id=GTM-WFW24X is 108kB
  6. main.css is 72kB
  7. vendor.js is 53kB

  The page uses 2 fonts which require 322kB. Could system fonts be used instead?

  Tip: Limit third-party code

  Here are the largest sources of third-party code:

  1. geckoengage.com uses 794kB
  2. imgix uses 303kB
  3. cloudfront.net uses 205kB
  4. Google Tag Manager uses 108kB

  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.