Plugin info

Total downloads: 35,119
Active installs: 4,000
Total reviews: 8
Average rating: 5
Support threads opened: 0
Support threads resolved: 0 (0%)
Available in: 2 language(s)
Contributors: 2
Last updated: 11/10/2025 (52 days ago)
Added to WordPress: 1/28/2021 (4 years old)
Minimum WordPress version: 6.8
Tested up to WordPress version: 6.9
Minimum PHP version: 8.0

Maintenance & Compatibility

Maintenance score

Actively maintained • Last updated 52 days ago • 8 reviews

61/100

Is Flexible Spacer Block abandoned?

Likely maintained (last update 52 days ago).

Compatibility

Requires WordPress: 6.8
Tested up to: 6.9
Requires PHP: 8.0

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Description

Flexible Spacer Block switches the height of the spacer according to the device screen width (breakpoints).
This block has two variable breakpoints, and you can adjust the height of the spacer for smartphones, tablets, and desktops respectively.
The height of the spacers can be changed individually or in batches.
Also available to set “negative space (negative margin)” instead of the normal space.
And this block supports transform from and to core spacer block.

About negative space

Negative space” narrows the margins both blocks above and below the spacer, and it is also possible to overlap the blocks.
If unintended overlap occurs, add a CSS class named “fsb-style-show-front” to the block you want to show in the front.
To apply the CSS class to the block, click on the block on WordPress editor, and check the block settings on the right for the Advanced setting ,then enter the CSS class.

Resources

Image for screenshot

License: CC0 Public Domain
Source: https://pxhere.com/ja/photo/245

Installation

  1. Upload the flexible-spacer-block folder to the /wp-content/plugins/ directory.
  2. Activate the plugin through the \’Plugins\’ menu in WordPress.

Frequently Asked Questions

What filters can I use?

You can find a list of the available filters in the Github readme.

Review feed

philhoyt
2/14/2022

Those responsive features core forgot!

I use this plugin on every site I build! An easy drop-in replacement for the spacer block.
Jan Pencik
4/23/2022

Amazing!

Thank you very much for creating this awesome plugin. Love the plugin's simplicity and ease of use!
megane9988
5/20/2024

it is necessary for FES

It can set margins for each screen width that cannot be set with the default block. It also supports negative margins. Easy to use.

Screenshots

  1. On Block Editor

    On Block Editor

  2. Setting page

    Setting page

  3. Negative space example

    Negative space example

  4. Negative space example

    Negative space example

Changelog

2.7.0

  • Tested to WordPress 6.9
  • Drop support for WordPress 6.6 and 6.7
  • Update: block icon and toolbar icon
  • Enhancement: Polish settings sidebar layout
  • Enhancement: Highlight active spacer
  • Accessibility: Add aria-label to controls

2.6.0

  • Tested to WordPress 6.8
  • Accessibility: Respect user preference for CSS transitions
  • Drop support for WordPress 6.5

2.5.0

  • Tested to WordPress 6.7
  • Drop support for WordPress 6.4

2.4.0

  • Tested to WordPress 6.6
  • Drop support for WordPress 6.3

2.3.0

  • Tested to WordPress 6.5
  • Enhancement: Polish block style
  • Enhancement: Polish settings page style
  • Fix: Remove unnecessary CSS class
  • Drop support for WordPress 6.2

2.2.0

  • Tested to WordPress 6.4
  • Drop support for WordPress 6.0, 6.1

2.1.0

  • Tested to WordPress 6.3
  • Add: unit support
  • Drop support for WordPress5.9
  • Drop support for PHP7.3

2.0.0

  • Tested to WordPress 6.2
  • Feature: Add default values setting
  • Enhancement: Remove focus style for unit elements on the setting page
  • Enhancement: Improve error messages on the setting page
  • Fix: Responsive Setting value is empty for certain operations
  • Fix: grammer in the setting page

1.4.1

  • Clean: Remove files not needed for the release

1.4.0

  • Tested to WordPress 6.1
  • Drop support for WordPress 5.6 through 5.8
  • Fix: Not converting correctly from core spacer block
  • Enhancement: Polish style in the setting page

1.3.0

  • Tested to WordPress 6.0
  • Update: Minify inline styles
  • Add: filter hooks
  • Update: block icon
  • Update: author name
  • Fix: CSS files are not loaded in the iframe editor on WordPress 6.0

1.2.3

  • Change: Ensure minimum height of the block
  • Change: Minimum value of the spacer
  • Fix: Unable to change the height of spacer in WordPress 5.9.1

1.2.2

  • Clean: Remove unnecessary file included in the release

1.2.1

  • Fix: Wrong text domain

1.2.0

  • Tested to WordPress 5.9
  • Add: Block control to change responsive view
  • Change: Scripts handle name
  • Change: dashicons to @wordpress/icons
  • Remove: load_plugin_textdomain function

1.1.9

  • Clean: Update npm packages and run a lint check

1.1.8

  • Clean: Update npm packages
  • Remove: Bundled language files

1.1.7

  • Tested to WordPress 5.8
  • Clean: Update npm packages

1.1.6

  • Fix: build script error
  • Fix: README.md screenshot

1.1.5

  • Tested to WordPress 5.7
  • Clean: Update deploy flow (github actions)
  • Clean: Update npm packages and organize development env

1.1.4

  • Tested to PHP 8

1.1.3

  • Fix: Problem about plugin configuration values are not deleted upon uninstallation

1.1.2

  • Fix: Problem about uninstallation error in PHP 8

1.1.1

  • Add: Description about negative space

1.1.0

  • Add: Negative space setting

1.0.0

  • Initial release