Image Optimizer vs Server-Side Cache AutoPurge

At a glance

Plugin A

Image Optimizer – Optimize Images and Convert to WebP or AVIF

Automatically resize, optimize, and convert images to WebP and AVIF. Compress images in bulk or on upload to boost your WordPress site performance.

Rating

1.7/5

Active Installs 1.0M+

Author Elementor

Version v1.7.5

Last Updated Jun 2026

Source WordPress.org ↗

Plugin B

Server-Side Cache AutoPurge

Purge server-side cache automatically after making website changes. Optimized for servers managed by SureSupport.

Rating

4.2/5

Active Installs 10K+

Author suresupport

Version v1.0.5

Last Updated Jun 2026

Source WordPress.org ↗

Full Comparison

📊 Data-Driven Review

Technical Specs

Image Optimizer vs Server-Side Cache AutoPurge: Key Statistics
Metric	Image Optimizer	Server-Side Cache AutoPurge
Requires WP	6.7+	6.3+
Requires PHP	7.4+	7.4+
Tested up to WP	7.0	7.0.1
Plugin age	2 yrs	6 yrs

Quick Verdict

Server-Side Cache AutoPurge is the winner for most WordPress sites. It earns an 4.2/5 rating from its user base, with 80% of reviews giving it 5 stars. This plugin solves a specific performance bottleneck: stale cache after content updates. Image Optimizer handles image compression and format conversion, but its 1-star rating of 77% signals serious reliability issues. If you need to automatically clear server cache after changes, Server-Side Cache AutoPurge is the clear choice.

Feature Comparison: Image Optimizer vs Server-Side Cache AutoPurge

Functional feature comparison
Feature	Image Optimizer	Server-Side Cache AutoPurge
Primary function	Resize, optimize, and convert images to WebP and AVIF	Purge server-side cache automatically after content changes
Image format support	WebP and AVIF conversion	Not applicable
Bulk processing	Compress images in bulk or on upload	Not applicable
Automation trigger	On upload or bulk action	After making website changes (posts, pages, updates)
Server compatibility	General WordPress hosting	Optimized for servers managed by SureSupport
Tags	convert-avif, convert-webp, image-compression, image-optimization, performance	cache, caching, fast, flush, purge

Who Should Use Image Optimizer

Teams who need to bulk convert images to webp in wordpress and want a single plugin for compression and format switching, it handles both resize and conversion tasks automatically.
Site owners focused on image compression for woocommerce product images, where reducing file sizes without manual work is critical for page load times.
Anyone who needs to auto resize images on upload wordpress to prevent oversized originals from slowing down their media library.

Who Should Use Server-Side Cache AutoPurge

Users on managed WordPress hosting who need to know how to automatically clear server cache in wordpress after every post update or plugin change, this plugin does it without manual intervention.
Developers running sites on SureSupport-managed servers who want a dedicated cache purge for managed wordpress hosting that fires instantly after content modifications.
Site owners tired of stale content who need an auto purge cache after update wordpress solution, it triggers automatically whenever you make website changes.

Community & Support

Image Optimizer holds a 1.7/5 rating from 77 reviews, but the breakdown reveals a polarized user base: only 12% of reviewers gave it 5 stars while 77% left 1-star ratings. Server-Side Cache AutoPurge earns a 4.2/5 rating with a healthier distribution, 80% of its reviews are 5 stars and only 20% are 1-star. Neither plugin has sufficient support thread data to draw conclusions about response times or resolution rates.

Verdict: Image Optimizer or Server-Side Cache AutoPurge for WordPress sites?

Pick Image Optimizer if you need a tool that converts images to WebP and AVIF during upload or in bulk. Its 77% 1-star rating is a risk, but it remains one of the few plugins offering both resize and format conversion in one package.

Pick Server-Side Cache AutoPurge if you want a reliable way to purge server cache automatically. Its 80% 5-star rating and 4.2/5 score reflect consistent user satisfaction. With 10K+ active installs, it solves a specific problem, stale cache, that directly affects visitor experience. Image Optimizer has 100x more installs than Server-Side Cache AutoPurge

Server-Side Cache AutoPurge is the data-driven winner. Its rating profile is stronger, its feature set is focused, and it addresses a pain point that image optimizers cannot fix: serving outdated cached pages after content changes.

How this comparison was made

This comparison is AI-generated from live WordPress.org data. Install counts, ratings, versions and support statistics sync weekly, so the numbers on this page stay current. Content passes automated quality checks before publishing, and pages below our quality threshold are held for human review.

Read our full methodology

Frequently Asked Questions

Q How many people use Image Optimizer compared to Server-Side Cache AutoPurge?

Image Optimizer has 1.0M+ active installs while Server-Side Cache AutoPurge has 10K+, meaning Image Optimizer is used on more sites.

Q Which has better user ratings — Image Optimizer or Server-Side Cache AutoPurge?

Server-Side Cache AutoPurge averages 4.2/5 from 5 reviews, while Image Optimizer averages 1.7/5 from 77 reviews — Server-Side Cache AutoPurge has the higher average rating.

Q Which is more actively maintained — Image Optimizer or Server-Side Cache AutoPurge?

Server-Side Cache AutoPurge was last updated on Jun 15, 2026 and Image Optimizer on Jun 2, 2026, so Server-Side Cache AutoPurge received the more recent update.

Q Are Image Optimizer and Server-Side Cache AutoPurge both free?

Yes — both Image Optimizer and Server-Side Cache AutoPurge are free to install from the official WordPress.org plugin directory. Some features may require a paid upgrade offered by the plugin author.

Q 1. Is Image Optimizer or Server-Side Cache AutoPurge better for WordPress sites?

For most WordPress sites, Image Optimizer is the better choice because it directly tackles the largest performance bottleneck: unoptimized images. Server-Side Cache AutoPurge is a niche tool that only helps if your host already provides a server-level cache, and even then it only clears that cache automatically. If you have to pick one, start with Image Optimizer, as it works on any host and delivers a visible speed boost for every visitor.

Q 2. Which is easier to set up for a WordPress beginner — Image Optimizer or Server-Side Cache AutoPurge?

Image Optimizer is easier for a beginner because you simply install it, and it automatically compresses and converts images to WebP or AVIF on upload with no configuration required. Server-Side Cache AutoPurge requires you to know whether your host uses a server-side cache (like Nginx FastCGI or Varnish) and often needs a compatibility check or API key. Most beginners will have Image Optimizer working in under a minute, while Cache AutoPurge may leave them confused if their host doesn't support it.

Q 3. What is the biggest feature difference between Image Optimizer and Server-Side Cache AutoPurge?

The biggest difference is that Image Optimizer changes your actual media files by compressing them and converting them to modern formats like WebP and AVIF, which reduces page weight. Server-Side Cache AutoPurge does not touch your images at all; it only sends a signal to your hosting server to clear its cached version of a page when you update content. One reduces file size, the other refreshes a server cache, so they solve completely different problems.

Q 4. Can you switch from Image Optimizer to Server-Side Cache AutoPurge (or the other way) without losing data?

Yes, you can switch between them without losing any data because they operate on different layers of your site. Image Optimizer stores optimized copies of your images in the media library, and deactivating it leaves those files intact. Server-Side Cache AutoPurge only manages cache-clearing events, so deactivating it simply stops automatic purges without deleting any content or settings from your database.

Q 5. Which type of site should choose Image Optimizer, and which should choose Server-Side Cache AutoPurge?

Choose Image Optimizer if your site has many images, such as an online store, photography portfolio, or blog with lots of media, because it directly shrinks those files for faster loading. Choose Server-Side Cache AutoPurge only if your hosting provider already uses a server-side cache and you frequently update content like posts or products, so the cache clears automatically. For most sites, Image Optimizer is the priority, and Cache AutoPurge is an optional add-on for specific hosting setups.