Everytime I search about changing image sizes in TYPO3, the only thing I can find is cropping, as if it was the only way to manipulate image sizes. This even confuses editors and they asked me, as the site package developer, if I did something wrong.
TYPO3 11.5 even offers an image manipulation tool for editors and the "powerful" image manipulation capabilities are promoted on the website.
But neither the tool offers a way to down scale images nor are there width / height settings. It could be related to responsiveness. But I don't see a problem in changing the width / height as long as you don't deform the image (i.e. change the width/height ratio) and don't stretch the image width/height bigger than it was before.
On the other hand, the famous bootstrap_package (which seems to be a quasi-standard to me, because even the TYPO3 doc screenshots have this extension) stretches images to 100% container width, even if they are smaller, which makes them look really blurry and bad.
I wonder if I missed something like an option that I can activate in my site package or a good reason why such an important feature is missing.