If I use a svg file in my new design, when setting up the files, I should replace it with placehold.it like another images ??
If you have all the rights to use those SVG’s, then you don’t need to replace them with placeholders images.
if was for free, can i use it ?
Yes! You can do that.
thank u very much bro
Basically you need to use placeholders for each image you don’t have rights for redistribution. So if the icons author allows you to use them in your projects(in commercial projects), then you can do it. (But be careful, for some icons you need to add attribution - link in your project description )