User Register Filter Review: A Speed Score That Holds Up

User Register Filter - MakeWPFast

User Register Filter is a WordPress plugin. Restringe el registro de usuarios en tu WordPress en función de las reglas que especifiques: lista negra de. Our 3-context benchmark shows it barely registers (-4ms TTFB on activation).

A
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.

GradeScoreWhat it means
A90–100Negligible impact. Safe to install on any hosting.
A-80–89Very light impact. Minimal overhead on any setup.
B+ / B / B-65–79Light impact. Adds some overhead but manageable on most setups.
C+ / C / C-50–64Moderate impact. May noticeably slow down budget hosting.
D+ / D35–49Heavy impact. Will affect page load times. Consider alternatives.
F0–34Severe 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.

Performance Benchmark
Tested May 2026 · How we test
ContextTTFBMemoryQueries
Activation+-4 ms+0 MB+0
🏠Homepage+11 ms+0 MB+0
⚙️WP Admin+1 ms+0 MB+0
Low impact
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Plugin Overview
Active Installs10
Tested Up ToWP 4.7.33
Last UpdatedMay 15, 2017
Downloads2K+

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User Register Filter Speed Score - MakeWPFast

Performance Analysis

Performance Impact

User Register Filter receives an estimated speed score of . Our real benchmark tests measured the following impact when activating this plugin:

  • TTFB impact: +-4 ms
  • Memory impact: +0.0 MB
  • Additional DB queries: +0

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

Maintenance Status

Last updated: 2017-05-15. Trusted by 10 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 User Register Filter

PluginSpeed ScoreActive Installs
Elementor Website BuilderD+10M+
Classic EditorA-9M+
Yoast Duplicate PostA-4M+

Frequently Asked Questions

Is User Register Filter safe to keep activated on production sites?
Based on our 2026 benchmark, yes. User Register Filter measured a TTFB delta of -4ms on activation, which earned it a speed score of A. That's well within the range we'd recommend for production WordPress sites.
What makes User Register Filter faster than similar plugins?
We measured User Register Filter in three contexts (activation, homepage load, wp-admin) and it consistently stayed under our overhead thresholds. The composite score of A reflects all three — not a single cherry-picked number.
Does User Register Filter slow down WordPress?
User Register Filter has an estimated speed score of . It may noticeably affect your site speed. Consider alternatives if performance is critical.
Is User Register Filter still maintained?
User Register Filter was last updated on 2017-05-15. It has 10 active installations, indicating it is a functional plugin with a dedicated user base.
What are the best alternatives to User Register Filter?
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.
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