Block Inserter Filter

Description

Block Inserter Filter lets administrators hide individual Gutenberg blocks from the block inserter for the whole site — Core blocks, theme blocks and blocks of any plugin — without writing any code. It controls what editors can insert; it does not touch existing content and has no effect on the front end.

Features

• Clear admin screen under “Settings → Hide Blocks”.
• Works with every registered block type: Core, theme and plugin blocks.
• Group blocks either by block category (as in the editor) or by namespace.
• Embed variations (YouTube, Reddit, Vimeo, TikTok, Bluesky, …) can be hidden individually.
• Live search across all blocks and embed variations.
• “Toggle all” per group.
• Protection list: core blocks (paragraph, heading, list, image, group, columns) are always available as a safety net and cannot be hidden.
• Existing content using hidden blocks remains visible — only the insertion of new instances is blocked.
• No external dependencies, no tracking, no front-end database load.

Optional GenerateBlocks integration

GenerateBlocks is not required. If it is installed, the plugin adds a few conveniences:

• GenerateBlocks and GenerateBlocks Pro blocks are listed in separate groups.
• GenerateBlocks Pro blocks are marked with a Pro badge.
• Core blocks that GenerateBlocks Pro replaces with an extended variant are hidden automatically while Pro is active and reappear when it is deactivated.

Security

Defense in depth: capability check (manage_options), nonce validation, whitelist sanitization on save, consistent output escaping.

Technical details