What does optimise do?

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  • Updated 4 years ago
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When adding an image to my site there is an option to optimise the image. What does this option do and should I use it?
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John

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Posted 4 years ago

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Gop

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Hello John,

The image optimisation looks at the file size and calculates if the image file size can be compressed. Sometimes this can cause problems. It is better to compress the image yourself outside the sitebuilder where you have control of the process, particularly if you wish to retain a high definition or a high fidelity of colour.

Many images stored by usrs are much larger than required for a good appearance an large image file sizes slow down page loading and waste the servers resources for no advantage.

Large images can generally be displayed with a file size of approximately 100 Kb. Smaller images say post card size generally 20 to 30 Kb.
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Emmy

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Thanks Gop :)
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John

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Thanks for that Gop. Is it too late to alter once optimised? Or can I go back and uncheck it so that it back to original?

Thank you for your time.

John
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Gop

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Hi John,

Once the image is optimised you will notice that it has additional naming added to the original name by the optimiser. This file can't be un-optimised. If you have your original image file stored on your computer, for example, then you can upload that again to your file manager and use that. You can then delete the optimised file if you wish to and re-do the image placement.

It's a bit like general file maintenance and keeping your original safe is always a good practice. Using a copy for your site then means that you can always step back to a safe file.
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John

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Thank you Gop. I do have back-ups but I think I will leave those on site as is! Far too many to update! They don't look much different optimised or not really. I suppose an original file will take up more file space then? Ah well I will leave my future updates unoptimised in future. Thank you again Gop.
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Gop

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Hello John,

The optimisation generally presents an acceptable image. If you notice an image that is sup-optimal then you can redo it.

It is the file size that the optimiser reduces. Many people place images in the Mb size on their site and the load times are delayed or in some cases time-out. If they load slowly then viewers tend to be impatient and walk away. Search engines may penalise sites with slow load times hence for these reasons it is good to keep image sizes as small as acceptable.
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John

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Thank you all for the education!