Compression of images before upload to Squarespace 7.1

Hello!

I know it is "best practice" to always upload compressed images to web reduce load-time etc.

But I wonder if Squarespace anyway will compress the uploaded files, so there will be no need to do it beforehand?

I'm adding a link to a page where I have made an image gallery (slide-show), built in Squarespace 7.1, Fluid Engine:

https://www.hoyden.no/universitetsgata-7

(The images in this slideshow is not compressed before uploading)

Erlend

54 minutes ago, Erlend-fs said:

I know it is "best practice" to always upload compressed images to web reduce load-time etc.

But I wonder if Squarespace anyway will compress the uploaded files, so there will be no need to do it beforehand?

Squarespace recommend that you save the images at a high "quality" setting (95+ in most image tools) and then upload them without additional compression. 

To quote what I said in another thread, when you upload an image to Squarespace, the platform does some resizing which necessitates re-encoding and re-compressing. If you compress an image before uploading it, the mandatory re-compressing will usually result in a larger file size because the algorithm won't know the difference between "actual image content" and "artifacts of the previous compression run".

I hope this helps.

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On that note, could this explain why when you try to upload more pictures in a gallery, it takes time not only to display the pictures in edit mode but the upload is taking forever?

I have this problem on this page of my website:

https://www.filmmining101.com/hall-of-fame/most-beautiful-movie-shots-of-all-time