Report - Robin image optimizer 2.0.3

Does Robin image optimizer work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on 2026-03-11 19:11:06 UTC.

Summary

Errors

	No PHP errors, warnings or notices
3	JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 417.79 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment

WordPress version	6.9.4
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2026-03-12T15:45:00+00:00
Active installs	100,000+
WordPress.org page	https://wordpress.org/plugins/robin-image-optimizer/
Badges	Get badge code

Pages 9

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=robin-image-optimizer%2Frobin-image-optimizer.php&plugin_status=all&paged=1&s&_wpnonce=e82469f0c6
Aspect	after-activation
HTTP status	200
Load time	0.707 s
Memory usage	4.48 MiB
JS errors	None
Resource errors	None

Media → Other Media

URL	/wp-admin/upload.php?page=rio-custom-media
Aspect	menu-item
HTTP status	200
Load time	0.302 s
Memory usage	4.1 MiB
JS errors	None
Resource errors	None

Robin Image Optimizer

URL	/wp-admin/admin.php?page=rio_general-robin-image-optimizer
Aspect	menu-item
HTTP status	200
Load time	0.572 s
Memory usage	4.19 MiB
JS errors	None
Resource errors	None

Robin Image Optimizer → Settings

URL	/wp-admin/admin.php?page=rio_settings-robin-image-optimizer
Aspect	menu-item
HTTP status	200
Load time	0.522 s
Memory usage	4.43 MiB
JS errors	`[ { "message": "TypeError: Cannot read properties of undefined (reading 'data')\n at X (https://app.formbricks.com/js/formbricks.umd.cjs:1:16751)\n at https://app.formbricks.com/js/formbricks.umd.cjs:1:26296", "trace": null, "code": null } ]`
Resource errors	None

Robin Image Optimizer → License

URL	/wp-admin/admin.php?page=wrio_license
Aspect	menu-item
HTTP status	200
Load time	0.348 s
Memory usage	4.11 MiB
JS errors	`[ { "message": "TypeError: Cannot read properties of undefined (reading 'data')\n at X (https://app.formbricks.com/js/formbricks.umd.cjs:1:16751)\n at https://app.formbricks.com/js/formbricks.umd.cjs:1:26296", "trace": null, "code": null } ]`
Resource errors	None

Robin Image Optimizer → About Us

URL	/wp-admin/admin.php?page=ti-about-robin_image_optimizer
Aspect	menu-item
HTTP status	200
Load time	2.055 s
Memory usage	4.89 MiB
JS errors	None
Resource errors	None

Custom Folders

URL	/wp-admin/admin.php?page=io_folders_statistic-robin-image-optimizer
Aspect	menu-item
HTTP status	200
Load time	0.423 s
Memory usage	4.18 MiB
JS errors	`[ { "message": "TypeError: Cannot read properties of undefined (reading 'data')\n at X (https://app.formbricks.com/js/formbricks.umd.cjs:1:16751)\n at https://app.formbricks.com/js/formbricks.umd.cjs:1:26296", "trace": null, "code": null } ]`
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.255 s
Memory usage	4.35 MiB
JS errors	None
Resource errors	None

Dashboard ‹ Test site — WordPress

URL	/wp-admin/index.php
Aspect	new-meta-boxes
HTTP status	200
Load time	0.363 s
Memory usage	4.25 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.437 s	0.451 s	+0.014 s	3.78 MiB	4.25 MiB	+ 488.16 KiB
/wp-admin/edit.php	0.361 s	0.308 s	-0.053 s	3.78 MiB	4.23 MiB	+ 452.34 KiB
/wp-admin/post-new.php	0.893 s	0.839 s	-0.054 s	6.31 MiB	6.8 MiB	+ 501.45 KiB
/wp-admin/upload.php	0.671 s	0.514 s	-0.157 s	3.74 MiB	4.13 MiB	+ 396.71 KiB
/wp-admin/options-writing.php	0.325 s	0.318 s	-0.007 s	3.71 MiB	4.1 MiB	+ 399.32 KiB
/wp-admin/media-new.php	0.441 s	0.371 s	-0.070 s	3.7 MiB	4.1 MiB	+ 407.52 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.425 s	0.315 s	-0.110 s	3.72 MiB	4.12 MiB	+ 411.89 KiB
/wp-admin/post-new.php?post_type=page	0.702 s	0.706 s	+0.004 s	6.3 MiB	6.78 MiB	+ 494.94 KiB
/wp-admin/options-discussion.php	0.326 s	0.422 s	+0.096 s	3.71 MiB	4.1 MiB	+ 395.82 KiB
/wp-admin/edit-comments.php	0.326 s	0.342 s	+0.016 s	3.74 MiB	4.12 MiB	+ 394.84 KiB
/	0.283 s	0.188 s	-0.095 s	4.11 MiB	4.35 MiB	+ 252.7 KiB
Average	0.472 s	0.434 s	-0.038 s	4.24 MiB	4.64 MiB	+ 417.79 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

CSS

JavaScript

Language		%	Lines of code	Comment lines	Files
	PHP	65.7%	25,387	15,361	238
	CSS	17.1%	6,598	180	19
	JavaScript	9.8%	3,778	440	23
	LESS	7.3%	2,819	159	9
	JSON	0.1%	39	0	2
	Markdown	0.1%	36	0	1
Total			38,657	16,140	292

PHP Code Analysis | More results »

Lines of code	23,768
Total complexity	4,907
Median class complexity	12.5
Median method complexity	2.0
Most complex class	RIO_Process_Queue
Most complex function	WIO_OptimizePageTemplate::getMediaColumnTemplate()

Classes	184
Methods	1,538
Functions	55

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.

Database Tables 1

wp_rio_process_queue

Options `wp_options` 11

robin_image_optimizer_install
robin_image_optimizer_license_data
robin-image-optimizer_version
wbcr_io_auto_optimize_when_upload
wbcr_io_backup_origin_images
wbcr_io_convert_webp_format
wbcr_io_db_version
wbcr_io_plugin_activated
wbcr_io_plugin_version
wbcr_io_save_exif_data
wbcr_io_server_2_quota_limit

Meta Boxes

{
    "dashboard": {
        "themeisle": {
            "title": "WordPress Guides/Tutorials",
            "context": "normal"
        }
    }
}

PHP Error Log

The log file is empty.

Robin image optimizer 2.0.3