WordPress plugin comparison
Speed Optimizer vs Smart Image Loader
At a glance
- Speed Optimizer has more active installs: 1M+, against 90+ for Smart Image Loader.
- On a typical day, Speed Optimizer is downloaded about 5,598 times, Smart Image Loader about 4.
- Smart Image Loader is rated higher: 5.0 out of 5 from 2 reviews, against 4.2 from 641 reviews.
- Speed Optimizer was updated more recently: Nov 2, 2026, against Aug 9, 2018 for Smart Image Loader.
- Speed Optimizer is tested with a newer WordPress: 7.1.4, against 4.9.35 for Smart Image Loader.
Line by line
Speed Optimizer leads on 6 of 7 comparable lines.
| Metric |  Speed Optimizer |  Smart Image Loader |
|---|---|---|
| Popular rank | #44 | #17,181 |
| Active installs | 1M+ | 90+ |
| Downloads, last 30 days | 3.5M | 85 |
| Rating | 4.2(641) | 5.0(2) |
| Support threads resolved | 57% | – |
| Tested up to | 7.1.4 | 4.9.35 |
| Search multiplier | ×2.73 | ×0.00 |
| Last release | 7 days ago | 8 years ago |
| Requires PHP | 7.0 | – |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
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