PDF Embedder vs Flexible Spacer Block (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Quick Verdict
As of April 2026, Flexible Spacer Block has a higher user rating (5/5 from 8 reviews) while PDF Embedder leads in active installations (300K+ vs 4.0K+). Both are free WordPress plugins. PDF Embedder has accumulated 5.0M+ total downloads while Flexible Spacer Block has 39K+.
Detailed Comparison
| Metric | PDF Embedder | Flexible Spacer Block | |
|---|---|---|---|
| Rating | 4.7/5 | ► | 5/5 |
| Total Reviews | 480 | ◄ | 8 |
| Active Installs | 300K+ | ◄ | 4.0K+ |
| Total Downloads | 5.0M+ | ◄ | 39K+ |
| Support Resolution | 100% | N/A | |
| Last Updated | 3 months ago | ► | 1 month ago |
| First Released | 2015 | 2021 | |
| Age | 11 years | 5 years | |
| WP Requires | 6.1+ | 6.9+ | |
| PHP Requires | 7.2+ | 8.0+ | |
| Business Model | Free | Free | |
| Latest Version | 4.9.3 | 2.8.0 |
Rating Breakdown
PDF Embedder
Flexible Spacer Block
Download Trends
Over the past 30 days, PDF Embedder averaged approximately 1,140 daily downloads while Flexible Spacer Block averaged 55.
Recent Reviews
PDF Embedder Reviews
It does the job efficiently
It performs the advertized tasks efficiently
Easy to use
Simple, easy and efficient.
VERY GOOD PLUGIN
VERY GOOD PLUGIN
Flexible Spacer Block Reviews
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.
Very nice
I wish more people would release single, useful blocks like this instead of all those copy cat collections. Who really needs 5 accordion blocks? Only other thing I’d like to see in this is a way to se
マイナススペースは便利！
マイナススペースは、スペーサーの上下にあるブロックの余白を狭くし、ブロックを重ねることも可能
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Frequently Asked Questions
Is PDF Embedder or Flexible Spacer Block more popular?
Which has better ratings — PDF Embedder or Flexible Spacer Block?
Are PDF Embedder and Flexible Spacer Block free?
Which plugin has better support — PDF Embedder or Flexible Spacer Block?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.