Head, Footer and Post Injections vs AMP With Postlight Mercury (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Head, Footer and Post Injections
300K+ active installs
Free
AMP With Postlight Mercury
10 active installs
Free
Quick Verdict
As of April 2026, Head, Footer and Post Injections has a higher user rating (4.9/5 from 735 reviews) and leads in active installations (300K+ vs 10). Both are free WordPress plugins. Head, Footer and Post Injections has accumulated 5.7M+ total downloads while AMP With Postlight Mercury has 1.7K+.
Detailed Comparison
| Metric | Head, Footer and Post Injections | AMP With Postlight Mercury | |
|---|---|---|---|
| Rating | 4.9/5 | ◄ | N/A |
| Total Reviews | 735 | ◄ | 0 |
| Active Installs | 300K+ | ◄ | 10 |
| Total Downloads | 5.7M+ | ◄ | 1.7K+ |
| Support Resolution | 0% | N/A | |
| Last Updated | 1 week ago | ◄ | 9 years ago |
| First Released | 2008 | 2016 | |
| Age | 18 years | 10 years | |
| WP Requires | 6.1+ | false+ | |
| PHP Requires | 7.0+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 3.3.6 | 1.1.0 |
Rating Breakdown
Head, Footer and Post Injections
AMP With Postlight Mercury
Download Trends
Recent Reviews
Head, Footer and Post Injections Reviews
Best Out there Love IT!!!
This plugin is invaluable… but all of the sudden it’s very hard to find it in the WordPress plugin search function. I had to go back to another site is was already installed on, find it and download
Works great
Has been my go-to header/footer injection plugin for years, works great and is consistently updated.
Works perfectly
Works perfectly, simple plugin that gets the job done.
AMP With Postlight Mercury Reviews
No reviews yet
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Frequently Asked Questions
Is Head, Footer and Post Injections or AMP With Postlight Mercury more popular?
Which has better ratings — Head, Footer and Post Injections or AMP With Postlight Mercury?
Are Head, Footer and Post Injections and AMP With Postlight Mercury free?
Which plugin has better support — Head, Footer and Post Injections or AMP With Postlight Mercury?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.