University of Durham - 10007143ACTIVE


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    Date checkedCO2 / gramsPage sizeEnergy

    Tip: Optimise images

    We estimate potential to save at least 836kB* by optimising images:

    1. Migratory-birds.png is 3.6MB
    2. 79677(3).jpg is 1.2MB and could be 717kB smaller
    3. 80462.jpg is 845kB and could be 118kB smaller
    4. Moothane-web-piece-i... is 250kB
    5. Migration-of-Thought... is 240kB
    6. covid-19-modelling-w... is 223kB
    7. apes-interaction-web... is 215kB
    8. THE-WUR-Subject-2022... is 214kB
    9. FDL-EhkX0AMJIS0.jpg:... is 145kB

    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 (JPG image) or (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. base.js is 525kB