Visual Block Inspector

Visual Block Inspector

Details
View on WordPress

Visual Block Inspector adds automatic visual inspection overlays to all blocks in the WordPress editor:

  • Color-coded outlines around every block (40% opacity by default, 100% on hover)
  • Smart labels showing block names on hover (e.g., core/paragraph, core/group)
  • Automatic numbering for columns and grid items
  • Hierarchy visualization – parent labels appear outside (centered), child labels inside (top-right)

No configuration needed – just activate and hover over blocks!

Color Coding System

  • Green outlines = Layout/container blocks (core/group, core/columns, core/grid, etc.)
  • Unique colors = Content blocks automatically assigned from 20-color Material Design palette
  • Purple outline = Post/page title

Smart Labels

Standard blocks (no children):
* Label inside at top-right corner
* Colored background matching outline
* Shows block type name

Parent containers (with children):
* Label outside, centered above block
* Text only, no background
* Shows container structure

Special numbering:
* Columns: Hover over core/columns to see numbers (1, 2, 3…) on each column
* Grids: Shows both item number (left) and block name (right) simultaneously

Why You Need This Plugin

Ever felt lost editing a complex page? Not sure which block is which? Wondering if that’s a column or a group?

Visual Block Inspector solves this instantly.

Perfect for:
* WordPress developers building complex layouts
* Designers who need to understand block structure
* Content creators working with nested blocks
* Site builders managing columns and grids
* Beginners learning how the Block Editor works
* Anyone who’s ever been confused editing a page

Technical Features

  • Pure vanilla JavaScript (no frameworks, no build process)
  • CSS-only visual effects (hover, transitions)
  • MutationObserver for automatic block detection
  • ~12KB total (CSS + JS)
  • Works in both standard and iframe editors
  • Zero external dependencies

Privacy & Security

This plugin:
* Does NOT track users
* Does NOT make external calls
* Does NOT collect any data
* Works entirely in your browser
* Never sends anything to external servers

100% privacy-friendly and secure.

Details

Plugin code:
visual-block-inspector
Plugin version:
1.0.0
Outdated:
No
WP version:
5.8 or higher
PHP version:
7.4 or higher
Test up to WP version:
6.9
Total installations:
0
Last updated:
2026-01-21
Rating:
Times rated:
1
block-editor
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visual-inspector