ShortPixel Image Optimizer 6.4.0

Does ShortPixel Image Optimizer work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
4PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 301.56 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 version6.9
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 300,000+
WordPress.org page https://wordpress.org/plugins/shortpixel-image-optimiser/
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Pages 5

ShortPixel Settings ‹ Test site — WordPress

Page screenshot: ShortPixel Settings ‹ Test site — WordPress
URL /wp-admin/options-general.php?page=wp-shortpixel-settings
Requested URL /wp-admin/plugins.php?action=activate&plugin=shortpixel-image-optimiser%2Fwp-shortpixel.php&plugin_status=all&paged=1&s&_wpnonce=12b1110438
Aspect after-activation
HTTP status 200
Load time 2.726 s
Memory usage 4.81 MiB
JS errors None
Resource errors None

Media → Custom Media

Page screenshot: Media → Custom Media
URL /wp-admin/upload.php?page=wp-short-pixel-custom
Aspect menu-item
HTTP status 200
Load time 0.388 s
Memory usage 4.12 MiB
JS errors None
Resource errors None

Media → Bulk ShortPixel

Page screenshot: Media → Bulk ShortPixel
URL /wp-admin/upload.php?page=wp-short-pixel-bulk
Aspect menu-item
HTTP status 200
Load time 0.574 s
Memory usage 5.21 MiB
JS errors None
Resource errors None

Settings → ShortPixel

Page screenshot: Settings → ShortPixel
URL /wp-admin/options-general.php?page=wp-shortpixel-settings
Aspect menu-item
HTTP status 200
Load time 0.714 s
Memory usage 4.34 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 0.270 s
Memory usage 4.3 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.440 s0.496 s+0.056 s3.78 MiB4.1 MiB+ 331.64 KiB
/wp-admin/edit.php0.376 s0.337 s-0.039 s3.78 MiB4.1 MiB+ 327.8 KiB
/wp-admin/post-new.php0.818 s0.857 s+0.039 s6.31 MiB6.61 MiB+ 308.12 KiB
/wp-admin/upload.php0.465 s0.545 s+0.080 s3.74 MiB4.31 MiB+ 587.05 KiB
/wp-admin/options-writing.php0.365 s0.340 s-0.025 s3.71 MiB3.96 MiB+ 249.91 KiB
/wp-admin/media-new.php0.547 s0.464 s-0.083 s3.7 MiB3.96 MiB+ 265.88 KiB
/wp-admin/edit-tags.php?taxonomy=category0.350 s0.315 s-0.035 s3.72 MiB3.98 MiB+ 268.88 KiB
/wp-admin/post-new.php?post_type=page0.707 s0.679 s-0.028 s6.3 MiB6.59 MiB+ 301.61 KiB
/wp-admin/options-discussion.php0.366 s0.424 s+0.058 s3.71 MiB3.95 MiB+ 246.41 KiB
/wp-admin/edit-comments.php0.353 s0.329 s-0.024 s3.73 MiB3.97 MiB+ 246.01 KiB
/0.304 s0.199 s-0.105 s4.12 MiB4.3 MiB+ 183.83 KiB
Average 0.463 s0.453 s-0.010 s4.24 MiB4.53 MiB+ 301.56 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
CSS
Sass
Language % Lines of code Comment lines Files
PHP61.9%34,0973,674169
JavaScript13.0%7,15954119
CSS12.0%6,61113013
Sass9.8%5,39530035
SVG3.0%1,643468
Markdown0.2%11101
JSON0.2%10407
Total 55,120 4,649 312

PHP Code Analysis | More results »

Lines of code 29,785
Total complexity 6,259
Median class complexity 26.0
Median method complexity 2.0
Most complex class ShortPixel\Model\Image\MediaLibraryModel
Most complex function ShortPixel\Model\Image\MediaLibraryModel::checkLegacy()
Classes 127
Methods 1,538
Functions 1

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 5

Options wp_options 5

User Metadata wp_usermeta 1

PHP Error Log 4 lines

[02-Dec-2025 21:55:23 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:55:23 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:55:32 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:55:32 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
See also: All tests for this plugin, How to Hide ShortPixel Image Optimizer Admin Menus