University of Hertfordshire - 10007147ACTIVE


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    Date checkedCO2 / gramsPage sizeEnergy

    Tip: Optimise images

    We estimate potential to save at least 138kB* by optimising images:

    1. homepage-hero-deskto... is 677kB
    2. There-is-a-place-lik... is 587kB
    3. LTPG-590x442.png is 182kB
    4. PPCS_web_homepod.jpg is 180kB and could be 85kB smaller
    5. new-facilities.jpg is 145kB and could be 16kB smaller
    6. enterprise-hub.jpg is 113kB and could be 17kB smaller
    7. the-rookies.jpg is 84kB and could be 10.0kB smaller
    8. UH-VC-Quintin-event.... is 42kB and could be 5.6kB smaller
    9. main.jpg is 38kB and could be 5.1kB 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 (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. fa-solid-900.woff2 is 142kB
    2. HelveticaNowText-Regular.ttf is 126kB
    3. HelveticaNowText-Bold.ttf is 126kB
    4. addthis_widget.js is 116kB

    The page uses 3 fonts which require 395kB. Could system fonts be used instead? There are 2 TTF/OTF fonts on the page - WOFF2 versions of these fonts may be smaller.