Different scope. Both useful.
Perfmatters is a focused asset disabler and tweaker. It does one job extremely well. HBM Rocket is the full pipeline. Most teams that try Perfmatters keep using it for the script manager and reach for HBM Rocket for everything else.
| CAPABILITY | PERFMATTERS | HBM ROCKET |
|---|---|---|
| Per page asset disable | via filter | |
| Script manager UI | ||
| Lazy load images and iframes | ||
| Local Google Fonts | ||
| Disable WP bloat (emojis, embeds, jQuery migrate) | ||
| Page cache | ||
| Critical CSS | ||
| Unused CSS removal | ||
| JS delay until interaction | ||
| Image format conversion (AVIF/WebP) | ||
| Self hosted image CDN | ||
| Cache warmup after purge | ||
| Nightly Lighthouse audits | ||
| Self heal on regression | ||
| Multi site dashboard | addon | |
| Public report pages |
Where Perfmatters wins
The script manager is genuinely the best in class for pinning specific scripts to specific URLs. If your bottleneck is a single Elementor widget or contact form 7 dragging down every page, Perfmatters at $25 a year is excellent. Pair it with our delay list and you have surgical control.
Where Perfmatters plateaus
It is not a cache plugin, not an image optimizer, and not an audit tool. It will not generate critical CSS or remove unused selectors. There is no audit history, no fleet view, no alerts.
Where HBM Rocket adds value
The full pipeline. Continuous audits and self heal. Multi site fleet view. Public client reports. We are happy when sites use both: Perfmatters for the per page asset surgery, HBM Rocket for the platform.