Predefined non-changeable content blocks

Yes, it is.

I can see, at least, one way to achieve this. You could create a new non-editable component and use it to create your own custom blocks.

PS: I don't remember if you can add non-editable blocks. If it's possible to do that, you don't need to create a new component. Just add non-editable custom blocks with your content

Here you can see how to create components: https://github.com/artf/grapesjs/wiki/Components

Here you can see how to add blocks: https://github.com/artf/grapesjs/wiki/Blocks

@arthuralmeidap correct, @Yamakasi you can set editable as false on any text Component. BTW that wiki is outdated, you can find all the documentation here:

• https://grapesjs.com/docs
• Component: https://grapesjs.com/docs/modules/Components.html
• Blocks: https://grapesjs.com/docs/modules/Blocks.html

Hi Guys! Sorry for the late response! I can work with that, clearly, thanks! Have a good 2019!