How WP Rocket | Simple LoadCSS Preloader Affects Your WordPress Speed

WP Rocket | Simple LoadCSS Preloader - MakeWPFast

Measured Speed Score

How is this scored?

Our Benchmark Methodology

Every speed score on MakeWPFast is based on real performance measurements, not estimates. We install each plugin on a clean WordPress 6.9 setup (PHP 8.3, MariaDB, GeneratePress theme) and measure two key metrics:

PHP Memory Usage — how much additional memory the plugin consumes per request. Each doubling of memory overhead costs 10 points. High memory usage can cause crashes on shared hosting and limits how many plugins you can safely run together.

Database Queries — how many extra SQL queries the plugin runs per page load. Each 10x increase in query overhead costs 25 points. More queries mean more database work, slower pages, and harder scaling.

The score uses a logarithmic scale — the first few extra queries or megabytes matter more than going from 100 to 110 queries. This reflects real-world impact: the jump from 4 to 14 queries is far more noticeable than 100 to 110.

Grade	Score	What it means
A	90–100	Negligible impact. Safe to install on any hosting.
A-	80–89	Very light impact. Minimal overhead on any setup.
B+ / B / B-	65–79	Light impact. Adds some overhead but manageable on most setups.
C+ / C / C-	50–64	Moderate impact. May noticeably slow down budget hosting.
D+ / D	35–49	Heavy impact. Will affect page load times. Consider alternatives.
F	0–34	Severe impact. Significant resource usage that hurts performance.

Plugins marked "Not Yet Tested" have not been benchmarked yet. We do not estimate or guess scores — if there is no measured data, there is no grade.

Note: Benchmarks measure a plugin in isolation on a clean install. Real-world impact varies based on your hosting, other plugins, and how the plugin is configured.

Context	TTFB	Memory	Queries
⚡Activation	+-2 ms	+0 MB	+1
🏠Homepage	Measuring — results coming soon
⚙️WP Admin	Measuring — results coming soon

Low impact

We benchmark plugins across 3 contexts: activation overhead, homepage load, and wp-admin. 2 contexts still being measured — this page updates automatically.

Plugin Overview

Active Installs4K+

Rating1/5 (2)

Last UpdatedApr 1, 2023

Downloads64K+

Authorensemblebd

WP.orgView on WordPress.org

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WP Rocket | Simple LoadCSS Preloader Speed Score - MakeWPFast

Performance Analysis

Performance Impact

WP Rocket | Simple LoadCSS Preloader receives an estimated speed score of A. Our real benchmark tests measured the following impact when activating this plugin:

TTFB impact: +-2 ms
Memory impact: +0.0 MB
Additional DB queries: +1

Overall activation impact: low. This plugin adds minimal overhead to your WordPress site.

Maintenance Status

Last updated: 2023-04-01. Trusted by 5K+ active installations.

Benchmark data measured in an isolated Docker environment (WordPress 6.8, PHP 8.3, GeneratePress). See our full methodology.

⚡

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Alternatives to WP Rocket | Simple LoadCSS Preloader

Plugin	Speed Score	Active Installs
Elementor Website Builder – More Than Just a Page Builder	D+	10M+
Classic Editor	A-	9M+
Yoast Duplicate Post	A-	4M+

Frequently Asked Questions

Does WP Rocket | Simple LoadCSS Preloader slow down WordPress?

WP Rocket | Simple LoadCSS Preloader has an estimated speed score of A. It should have minimal impact on your site speed.

Is WP Rocket | Simple LoadCSS Preloader still maintained?

WP Rocket | Simple LoadCSS Preloader was last updated on 2023-04-01. It has 5K+ active installations, indicating it is a functional plugin with a dedicated user base.

What are the best alternatives to WP Rocket | Simple LoadCSS Preloader?

Check our plugin reviews in the Other category for alternatives. We compare plugins side-by-side on speed, features, and user ratings to help you find the best fit.