How to detect the usage of Gutenberg

gutenberg_post_has_blocks() - this function exists only in Gutenberg plugin, and not in 5.0 Core.
is_gutenberg_page() - the same.
the_gutenberg_project() - the same.
has_blocks() - does not work (returns false) when Classic Editor is on and its option "Default editor for all users" = "Block Editor"

How do I know if Im using Gutenberg?
How do I enable Gutenberg editor?
How do I use Gutenberg?
Is WordPress Gutenberg free?
What is the best Page Builder for WordPress?
Is Gutenberg a plugin?
What is the difference between Gutenberg and classic editor?
Is Gutenberg better than Elementor?
Does WordPress use Gutenberg?
Is Gutenberg part of WordPress?

How do I know if Im using Gutenberg?

You'll need WP_Screen::is_block_editor() method to check if you are currently in the Gutenberg Editor (Since WordPress 5.0). Also, if you install Gutenberg as a separate plugin, then you'll have the is_gutenberg_page() function available to do the same check.

How do I enable Gutenberg editor?

First, you need to install and activate the plugin. You can download the installation files from its WordPress.org Plugin page. Next, go to Settings and then click Gutenberg Manager on the Left Menu. From the settings tab, we have the Global Option, Standard Post Types, and Custom Post Types.

How do I use Gutenberg?

Gutenberg allows you to just drag and drop files anywhere on the screen and it will automatically create a block for you. You can drop a single image or video file, and it will create the block for you. You can also drop multiple image files to create a gallery block.

Is WordPress Gutenberg free?

Atomic Blocks is a free WordPress theme that offers a simple design. It is fully compatible for Gutenberg page builder. This theme is a part of the Atomic Blocks plugin. The plugin adds more blocks to the Gutenberg builder.

What is the best Page Builder for WordPress?

Best Drag and Drop Page Builders for WordPress

SeedProd. SeedProd is the best landing page builder for WordPress. ...
Beaver Builder. Beaver Builder is a simple, user-friendly WordPress page builder that's a great choice for beginners. ...
Divi. ...
Elementor. ...
Visual Composer Website Builder. ...
Themify Builder. ...
Page Builder by SiteOrigin. ...
Thrive Architect.

Is Gutenberg a plugin?

Gutenberg Was First a Separate Plugin That is Still Actively Developed. Prior to Gutenberg being rolled into the core version of WordPress, Gutenberg was first developed as a separate plugin that allowed users to test it and see how it would change the way they compose and edit content within WordPress.

What is the difference between Gutenberg and classic editor?

The entire publishing and editing experience has been reshaped by Gutenberg. Blocks are the new tools to convert your ideas into media-rich content.
...
Gutenberg Vs Classic Editor Comparison.

Gutenberg Editor	Classic Editor
Lets you create content with blocks	Offers a plain area to create content and type your texts

Is Gutenberg better than Elementor?

In general, the Gutenberg block editor is a good substitute for basic content and layouts, but you'll be happier with a page builder like Elementor or Divi Builder if you want pinpoint style and spacing control over your designs.

Does WordPress use Gutenberg?

Gutenberg is available as part of WordPress 5.0 and later. The Classic Editor plugin allows users to switch back to the previous editor if needed.

Is Gutenberg part of WordPress?

In a nutshell, Gutenberg is a brand new editor for the WordPress platform. It will radically change the way you create posts, pages, products, and just about everything else on your site. Gutenberg will arrive as part of WordPress 5.0, which could be released as early as November 27, 2018.