Image Optimizer - Compress, Resize and Optimize Images 1.6.8

Does "Image Optimizer - Compress, Resize and Optimize Images" work with WordPress 6.8.2 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
10Unrecognized messages in the PHP error log
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 357.88 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.059 seconds
The average page load time increased by this amount after activating the plugin.

Environment
WordPress version6.8.2
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 1,000,000+
WordPress.org page https://wordpress.org/plugins/image-optimization/
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Pages 5

Plugins ‹ Test site — WordPress

Page screenshot: Plugins ‹ Test site — WordPress
URL /wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL /wp-admin/plugins.php?action=activate&plugin=image-optimization%2Fimage-optimization.php&plugin_status=all&paged=1&s&_wpnonce=e3d6b47fdf
Aspect after-activation
HTTP status 200
Load time 2.036 s
Memory usage 4.42 MiB
JS errors None
Resource errors None

Media → Image Optimizer

Page screenshot: Media  → Image Optimizer
URL /wp-admin/upload.php?page=image-optimization-settings
Aspect menu-item
HTTP status 200
Load time 0.642 s
Memory usage 3.85 MiB
JS errors None
Resource errors None

Media → Bulk Optimization

Page screenshot: Media  → Bulk Optimization
URL /wp-admin/upload.php?page=image-optimization-bulk-optimization
Aspect menu-item
HTTP status 200
Load time 0.538 s
Memory usage 3.87 MiB
JS errors None
Resource errors None

Tools → Scheduled Actions

Page screenshot: Tools → Scheduled Actions
URL /wp-admin/tools.php?page=action-scheduler
Aspect menu-item
HTTP status 200
Load time 0.226 s
Memory usage 3.87 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.199 s
Memory usage 3.67 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.296 s0.278 s-0.018 s3.51 MiB3.82 MiB+ 323.25 KiB
/wp-admin/edit.php0.188 s0.227 s+0.039 s3.57 MiB3.91 MiB+ 345.54 KiB
/wp-admin/post-new.php0.681 s0.725 s+0.044 s6.06 MiB6.6 MiB+ 551.72 KiB
/wp-admin/upload.php0.483 s0.875 s+0.392 s3.52 MiB3.88 MiB+ 360.58 KiB
/wp-admin/options-writing.php0.193 s0.243 s+0.050 s3.5 MiB3.8 MiB+ 310.34 KiB
/wp-admin/media-new.php0.244 s0.278 s+0.034 s3.49 MiB3.8 MiB+ 319.36 KiB
/wp-admin/edit-tags.php?taxonomy=category0.173 s0.208 s+0.035 s3.5 MiB3.82 MiB+ 324.8 KiB
/wp-admin/post-new.php?post_type=page0.581 s0.556 s-0.025 s6.05 MiB6.58 MiB+ 547.24 KiB
/wp-admin/options-discussion.php0.287 s0.462 s+0.175 s3.5 MiB3.8 MiB+ 307.46 KiB
/wp-admin/edit-comments.php0.175 s0.225 s+0.050 s3.52 MiB3.82 MiB+ 307.13 KiB
/0.298 s0.168 s-0.130 s3.44 MiB3.67 MiB+ 239.32 KiB
Average 0.327 s0.386 s+0.059 s3.97 MiB4.32 MiB+ 357.88 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

PHP
JavaScript
Language % Lines of code Comment lines Files
PHP83.3%10,4611,991169
JavaScript14.4%1,80611939
CSS2.2%27026
SVG0.1%1602
Total 12,553 2,112 216

PHP Code Analysis | More results »

Lines of code 9,738
Total complexity 1,541
Median class complexity 6.0
Median method complexity 1.0
Most complex class ImageOptimization\Classes\Rest\Route
Most complex function ImageOptimization\Modules\Optimization\Components\Media_Control::render_optimization_control()
Classes 150
Methods 749
Functions 0

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Options wp_options 14

Custom Post Types 1

ID Name
scheduled-actionScheduled Actions

PHP Error Log 10 lines

[11-Sep-2025 09:00:01 UTC] [Image Optimizer]: info in ImageOptimization\Modules\Core\Components\Migrations->run_migration(): The migration `fix_optimized_size_keys` successfully executed.
[11-Sep-2025 09:00:01 UTC] [Image Optimizer]: info in ImageOptimization\Modules\Core\Components\Migrations->run_migration(): The migration `fix_mime_type` successfully executed.
[11-Sep-2025 09:00:01 UTC] [Image Optimizer]: info in ImageOptimization\Modules\Core\Components\Migrations->run_migration(): The migration `fix_avif_with_zero_dimensions` successfully executed.
[11-Sep-2025 09:00:01 UTC] [Image Optimizer]: info in ImageOptimization\Modules\Optimization\Components\Actions_Cleanup->cleanup_stuck_operations(): No stuck optimization operations found for cleanup.
[11-Sep-2025 09:00:03 UTC] [Image Optimizer]: info in ImageOptimization\Modules\ConnectManager\Components\Connect->get_connect_status(): Status check error. Reason: User is not connected
[11-Sep-2025 09:00:03 UTC] [Image Optimizer]: info in ImageOptimization\Modules\ConnectManager\Components\Connect->get_connect_status(): Status check error. Reason: User is not connected
[11-Sep-2025 09:00:05 UTC] [Image Optimizer]: info in ImageOptimization\Modules\ConnectManager\Components\Connect->get_connect_status(): Status check error. Reason: User is not connected
[11-Sep-2025 09:00:05 UTC] [Image Optimizer]: info in ImageOptimization\Modules\ConnectManager\Components\Connect->get_connect_status(): Status check error. Reason: User is not connected
[11-Sep-2025 09:00:11 UTC] [Image Optimizer]: info in ImageOptimization\Modules\ConnectManager\Components\Connect->get_connect_status(): Status check error. Reason: User is not connected
[11-Sep-2025 09:00:11 UTC] [Image Optimizer]: info in ImageOptimization\Modules\ConnectManager\Components\Connect->get_connect_status(): Status check error. Reason: User is not connected
See also: All tests for this plugin, How to Hide Image Optimizer - Compress, Resize and Optimize Images Admin Menus