Hello,
If you would like to modify the asset files quality without touching timeline animation,
you can do so by locating your 'assets' folder in your file's project folder. It is in the same directory as your html file.
Please open the "assets" folder and make changes if necessary. You might want to keep the same dimensions of the images if they are used for animation, which might affect the animation.
GWD does not show the update live after you modify the assets, so please make sure to save the file, close the file, then modify your assets, then re-open the file again.
If you want to change the asset file names without touching timeline animation, then first, select the element in GWD, locate the source path under Component properties, then change the file path (name) there.
Please make sure that you have new files with modified names ready in "assets" folder.
I hope this helps,
Mariko (GWD team)