How Image Optimizer – Optimize Images and Convert to WebP or AVIF Affects Your WordPress Speed

Image Optimizer – Optimize Images and Convert to WebP or AVIF - MakeWPFast

B-

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 the difference in three metrics:

TTFB (Time To First Byte) — how many milliseconds the plugin adds to server response time. This is the most important factor (50% of the score) because it directly affects every page load.

Memory usage — how much additional PHP memory the plugin consumes per request (30% of score). High memory usage can cause crashes on shared hosting.

Database queries — how many extra SQL queries the plugin runs per page load (20% of score). More queries mean more database work on every request.

Grade	What it means
A / A-	Negligible impact. Safe to install on any hosting.
B+ / B / B-	Light impact. Adds some overhead but manageable on most setups.
C+ / C / C-	Moderate impact. May noticeably slow down budget hosting.
D+ / D	Heavy impact. Will affect page load times. Consider alternatives.
F	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.

+11 ms

TTFB Impact

+2 MB

Memory Impact

+45

DB Queries

High impact

Plugin Overview

Active Installs1M+

Rating1.5/5 (69)

Tested Up ToWP 6.9.1

Requires PHP7.4+

Last UpdatedFeb 1, 2026

Downloads12.3M+

AuthorElementor

WP.orgView on WordPress.org

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Image Optimizer – Optimize Images and Convert to WebP or AVIF Speed Score - MakeWPFast

Performance Analysis

Performance Impact

Image Optimizer – Optimize Images and Convert to WebP or AVIF receives an estimated speed score of C+. Our real benchmark tests measured the following impact when activating this plugin:

TTFB impact: +11 ms
Memory impact: +2.0 MB
Additional DB queries: +45

Overall activation impact: high. This plugin adds significant overhead. Consider alternatives if performance is critical.

Maintenance Status

Last updated: 2026-02-01. Requires PHP 7.4+. Trusted by 1.0M+ active installations.

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

Alternatives to Image Optimizer – Optimize Images and Convert to WebP or AVIF

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LiteSpeed Cache	A	7M+
Site Kit by Google – Analytics, Search Console, AdSense, Speed	A-	5M+
Jetpack – WP Security, Backup, Speed, & Growth	A	3M+

Frequently Asked Questions

Does Image Optimizer – Optimize Images and Convert to WebP or AVIF slow down WordPress?

Image Optimizer – Optimize Images and Convert to WebP or AVIF has an estimated speed score of C+. It has a moderate impact. Monitor your site speed after installation.

Is Image Optimizer – Optimize Images and Convert to WebP or AVIF still maintained?

Image Optimizer – Optimize Images and Convert to WebP or AVIF was last updated on 2026-02-01. It has 1.0M+ active installations, indicating it is actively maintained and widely trusted.

What are the best alternatives to Image Optimizer – Optimize Images and Convert to WebP or AVIF?

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