Autoptimize vs FSM Custom Featured Image Caption (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
FSM Custom Featured Image Caption
5.0K+ active installs
Free
Quick Verdict
As of April 2026, Autoptimize has a higher user rating (4.7/5 from 1,424 reviews) and leads in active installations (900K+ vs 5.0K+). Both are free WordPress plugins. Autoptimize has accumulated 43M+ total downloads while FSM Custom Featured Image Caption has 121K+. Autoptimize has a higher support resolution rate (36% vs 0%).
Detailed Comparison
| Metric | Autoptimize | FSM Custom Featured Image Caption | |
|---|---|---|---|
| Rating | 4.7/5 | ◄ | 4.6/5 |
| Total Reviews | 1,424 | ◄ | 22 |
| Active Installs | 900K+ | ◄ | 5.0K+ |
| Total Downloads | 43M+ | ◄ | 121K+ |
| Support Resolution | 36% | ◄ | 0% |
| Last Updated | Today | ◄ | 1 year ago |
| First Released | 2009 | 2017 | |
| Age | 17 years | 9 years | |
| WP Requires | 5.3+ | false+ | |
| PHP Requires | 7.1+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 3.1.15.1 | 1.25.1 |
Rating Breakdown
Autoptimize
FSM Custom Featured Image Caption
Download Trends
Over the past 30 days, Autoptimize averaged approximately 25,828 daily downloads while FSM Custom Featured Image Caption averaged 18.
Recent Reviews
Autoptimize Reviews
avoid
causes critical error, also no way to deactivate or remove without it crippling my wp site. don’t use it.
Injects Malware.
Not one but this happened twice in about 6 months across 2 sites. This topic was modified 1 week, 6 days ago by kkrajk.
Mala idea adquirir la versión PRO
Pague la versión PRO, y realmente fue un desastre, mi web tuvo constantes caídas, excesiva cantidad de cache, problemas con el CSS, realmente fue una perdida de dinero en el Plugin
FSM Custom Featured Image Caption Reviews
Super Helpful, Indeed Essential
Simple, easy to use, works well. I’d donate for sure if the Donate link worked!
Is the plugin still supported?
I have checked that the plugin has not been updated for 2 years, we have been using it for a couple of years and the plugin is very good, but we need to know if you plan to release new maintenance upd
Worked without any configuration
This plug-in did exactly what I expected (display the featured image caption in post single view), without any configuration. Thank you!
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Frequently Asked Questions
Is Autoptimize or FSM Custom Featured Image Caption more popular?
Which has better ratings — Autoptimize or FSM Custom Featured Image Caption?
Are Autoptimize and FSM Custom Featured Image Caption free?
Which plugin has better support — Autoptimize or FSM Custom Featured Image Caption?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.