Does it work with WP-CLI?

Yes. wp megaoptim optimize --all optimizes the library, wp megaoptim optimize --folder= a folder, wp megaoptim restore restores an image, and wp megaoptim status shows the queue.

by MegaOptim 5 (34 reviews)

MegaOptim Image Optimizer – Convert to WebP & AVIF, Compress Images Locally

Name: MegaOptim Image Optimizer – Convert to WebP & AVIF, Compress Images Locally
Rating: 5.0 (34 reviews)
Author: MegaOptim

Convert images to WebP and AVIF and compress them on your own server. No account, no API key, no image credits, and your images never leave your site.

MegaOptim Image Optimizer ranks #14,498 among WordPress.org plugins with 100+ active installations, is #1,421 of 6,651 in the Media category, a 5/5 rating from 34 reviews, and was last updated Oct 15, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1

v3.0.0 Current Version v3.0.0

Updated 3 weeks ago Last Update on 15 Oct, 2026

Refreshed 1 week ago Last Refreshed on

#1,421 of 6,651 in Media Top 25% by installs Downloads -15.4% this week Actively maintained

View on WordPress.org

Rank

#14,498

— No change

Active Installs

100+

-35.5%

KW Avg Position

53.4

0.4 better

Downloads

12.8K

+3 today

Support Resolved

— No change

Rating

100%

Review 5 out of 5

5 (34 reviews)

Next Milestone 200

Total Progress 58%

100+ 200+

1,824

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

Unlock Exact Install Count

See the precise estimated active installs for this plugin, calculated from real-time ranking data.

Exact install estimates within tiers
Track install growth over time
Milestone progress predictions

Upgrade to Pro

Need 42 more installs to reach 200+

Rank Changes

Current #14,498

Change

Best #

Upgrade to Pro

Unlock 30-day and 90-day rank history charts with a Pro subscription.

Upgrade Now

Active Installs Growth

Upgrade to Pro

Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

Upgrade to Pro

Unlock 30-day, 90-day, and yearly download history charts with a Pro subscription.

Upgrade Now

Reviews & Ratings

5.0

34 reviews

Overall 100%

34 (100%)

0 (0%)

Security History

Source: WPVulnerability

No known vulnerabilities on record for MegaOptim Image Optimizer. Checked 3 months ago.

Track This Plugin

Get detailed analytics, keyword tracking, and position alerts delivered to your inbox.

Start Tracking Free

Plugin Details

Version: 3.0.0
Last Updated: Oct 15, 2026
Requires WP: 5.8+
Tested Up To: 7.1
PHP Version: 7.4 or higher
Author: MegaOptim

Support & Rating

Rating: ★ ★ ★ ★ ★ 5
Reviews: 34
Support Threads: 0
Resolved: 0%

Keywords

AVIF compress images image optimizer optimize images webp

Upgrade to Pro

Unlock keyword rankings, search positions, and detailed analytics with a Pro subscription.

Upgrade Now

Similar Plugins

Adminify – White Label, Admin Menu Editor, Login Customizer

6K+ installs

#2,757

Master Addons for Elementor – Elementor Addons, Widgets, Mega Menu Builder, Popup Builder, Widget Builder & Template Kits

30K+ installs

#1,015

Jetpack – AI Agents & MCP, Security, Backup & Analytics

3M+ installs

#17

Advanced Custom Fields (ACF®)

2M+ installs

#28

Image Optimizer – Compress Images and Convert to WebP or AVIF

Regenerate Thumbnails

1M+ installs

#64

Smush – Image Optimization, Compression, Lazy Load, WebP & CDN

1M+ installs

#65

Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF

View all Media plugins

TL;DR

AI summary of the plugin's readme

MegaOptim 2.0 is for WordPress site owners who want smaller image files without sacrificing quality. It further compresses existing WebP and AVIF images, converts old JPG, PNG, and GIF uploads to next-gen formats, and optimizes JPEG/PNG in place, all while keeping original files intact.

Compress existing WebP and AVIF images
Convert JPEG, PNG, GIF to WebP/AVIF
Optimize JPEG and PNG in place
Bulk process Media Library
Browse and process folders
Automatic conversion on upload
Serve via .htaccess or PHP passthru
WP-CLI support for bulk tools

Frequently Asked Questions

Common questions about MegaOptim Image Optimizer – Convert to WebP & AVIF, Compress Images Locally

No. Since version 3.0, everything runs on your server and there is nothing to sign up for.

The MegaOptim cloud service has been retired, and version 3.0 replaces it with local processing. Your settings, optimization history and backups are kept, and the stored API key is removed. Images that were waiting for the cloud are paused and listed, so you can review the new settings and resume them locally. Former paying customers receive MegaOptim Pro free of charge; watch your inbox.

Yes, when your server can encode AVIF: GD or Imagick built with AVIF support, or the avifenc tool. Tools → Server diagnostics shows whether it can. MegaOptim Pro includes its own AVIF encoder.

WebP and AVIF copies are separate files; the original stays as it is. Compression does change the original file, so MegaOptim backs it up first (unless you turn backups off) and you can restore it at any time from the Images screen or with wp megaoptim restore.

Only with the Lossless preset. Balanced and Smaller files reduce quality slightly in exchange for smaller files. Use Compare to check the result on a few images before optimizing the whole library.

MegaOptim skips a copy that would be larger than the original, which happens with images that are already well compressed. The Images screen marks these as "original smaller". Other reasons are listed in Activity.

With <picture> markup (the default), which works on any server and with most caching plugins, or with rewrite rules for Apache and LiteSpeed, which keep your HTML unchanged. Browsers that do not support a format get the original. My images are stored on S3 or another cloud storage. The free plugin optimizes files that are on your server and skips offloaded files with an explanation. MegaOptim Pro optimizes media offloaded with S3 Uploads or WP Offload Media and uploads the WebP and AVIF copies with them.

Yes. wp megaoptim optimize --all optimizes the library, wp megaoptim optimize --folder=<path> a folder, wp megaoptim restore <id> restores an image, and wp megaoptim status shows the queue.

No. Images are processed on your server, and the free plugin does not contact any service.