WP Smart Preloader 1.15.3
Does WP Smart Preloader work with WordPress 6.9.1 and PHP 8.1.12? A smoke test was performed on .
Summary
Errors
| 2 | PHP warnings |
| 2 | PHP notices |
| No JavaScript exceptions | |
| All test pages loaded successfully | |
| No resource errors |
Performance
Memory usage: 13.76 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 | 6.9.1 |
|---|---|
| PHP version | 8.1.12 |
| MySQL version | 10.6.10 |
| PHP memory limit | 512M |
Plugin Info
| Last updated | |
|---|---|
| Active installs | 8,000+ |
| WordPress.org page | https://wordpress.org/plugins/wp-smart-preloader/ |
| Badges |
|
Pages 3
Plugins ‹ Test site — WordPress
| URL | /wp-admin/plugins.php?plugin_status=all&paged=1&s |
|---|---|
| Requested URL | /wp-admin/plugins.php?action=activate&plugin=wp-smart-preloader%2Fwp-preloader.php&plugin_status=all&paged=1&s&_wpnonce=fae7c82dd4 |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 0.358 s |
| Memory usage | 3.75 MiB |
| JS errors | None |
| Resource errors | None |
Settings → WP Smart Preloader
| URL | /wp-admin/options-general.php?page=wsp-loader |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.423 s |
| Memory usage | 3.74 MiB |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.215 s |
| Memory usage | 4.12 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.438 s | 0.365 s | -0.073 s | 3.78 MiB | 3.8 MiB | + 20.34 KiB |
| /wp-admin/edit.php | 0.384 s | 0.330 s | -0.054 s | 3.78 MiB | 3.8 MiB | + 20.34 KiB |
| /wp-admin/post-new.php | 0.883 s | 0.854 s | -0.029 s | 6.31 MiB | 6.33 MiB | + 23.04 KiB |
| /wp-admin/upload.php | 0.442 s | 0.459 s | +0.017 s | 3.74 MiB | 3.74 MiB | + 3.25 KiB |
| /wp-admin/options-writing.php | 0.341 s | 0.326 s | -0.015 s | 3.71 MiB | 3.72 MiB | + 6.93 KiB |
| /wp-admin/media-new.php | 0.525 s | 0.314 s | -0.211 s | 3.7 MiB | 3.72 MiB | + 15.13 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.330 s | 0.308 s | -0.022 s | 3.72 MiB | 3.74 MiB | + 25.8 KiB |
| /wp-admin/post-new.php?post_type=page | 0.714 s | 0.750 s | +0.036 s | 6.3 MiB | 6.32 MiB | + 19.19 KiB |
| /wp-admin/options-discussion.php | 0.342 s | 0.343 s | +0.001 s | 3.71 MiB | 3.72 MiB | + 3.43 KiB |
| /wp-admin/edit-comments.php | 0.325 s | 0.311 s | -0.014 s | 3.74 MiB | 3.74 MiB | + 2.93 KiB |
| / | 0.297 s | 0.201 s | -0.096 s | 4.11 MiB | 4.12 MiB | + 10.95 KiB |
| Average | 0.456 s | 0.415 s | -0.042 s | 4.24 MiB | 4.25 MiB | + 13.76 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.
| Language | % | Lines of code | Comment lines | Files | |
|---|---|---|---|---|---|
| CSS | 60.0% | 484 | 40 | 3 | |
| PHP | 24.3% | 196 | 74 | 3 | |
| JavaScript | 15.7% | 127 | 2 | 3 | |
| Total | 807 | 116 | 9 | ||
PHP Code Analysis | More results »
| Lines of code | 184 |
|---|---|
| Total complexity | 35 |
| Median class complexity | 35.0 |
| Median method complexity | 2.0 |
| Most complex class | WP_smart_preloader |
| Most complex function | WP_smart_preloader::wsp_add_class_body() |
| Classes | 1 |
|---|---|
| Methods | 17 |
| 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.
No new entries found.
PHP Error Log 4 lines
[04-Feb-2026 21:03:36 UTC] PHP Notice: Function WP_Scripts::localize was called <strong>incorrectly</strong>. The <code>$l10n</code> parameter must be an array. To pass arbitrary data to scripts, use the <code>wp_add_inline_script()</code> function instead. Please see <a href="https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 5.7.0.) in /wp-includes/functions.php on line 6131
[04-Feb-2026 21:03:36 UTC] PHP Warning: Trying to access array offset on value of type bool in /wp-content/plugins/wp-smart-preloader/inc/wsp-option_page.php on line 91
[04-Feb-2026 21:03:45 UTC] PHP Notice: Function WP_Scripts::localize was called <strong>incorrectly</strong>. The <code>$l10n</code> parameter must be an array. To pass arbitrary data to scripts, use the <code>wp_add_inline_script()</code> function instead. Please see <a href="https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 5.7.0.) in /wp-includes/functions.php on line 6131
[04-Feb-2026 21:03:45 UTC] PHP Warning: Trying to access array offset on value of type bool in /wp-content/plugins/wp-smart-preloader/inc/wsp-option_page.php on line 91