CSS JS Manager, Async JavaScript, Defer Render Blocking CSS 2.4.49.16

Does "CSS JS Manager, Async JavaScript, Defer Render Blocking CSS" work with WordPress 6.3.1 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
1PHP warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 68.77 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 version6.3.1
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 1,000+
WordPress.org page https://wordpress.org/plugins/css-js-manager/
Badges

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Pages 6

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=css-js-manager%2Fcss-js-manager.php&plugin_status=all&paged=1&s&_wpnonce=6ac246c447
Aspect after-activation
HTTP status 200
Load time 0.337 s
Memory usage 2.83 MiB
JS errors None
Resource errors None

CSS JS Manager

Page screenshot: CSS JS Manager
URL /wp-admin/admin.php?page=css-js-manager
Aspect menu-item
HTTP status 200
Load time 0.324 s
Memory usage 2.8 MiB
JS errors None
Resource errors None

Critical CSS

Page screenshot: Critical CSS
URL /wp-admin/edit.php?post_type=pi_critical_css
Aspect menu-item
HTTP status 200
Load time 0.173 s
Memory usage 2.86 MiB
JS errors None
Resource errors None

Critical CSS → Add New

Page screenshot: Critical CSS → Add New
URL /wp-admin/post-new.php?post_type=pi_critical_css
Aspect menu-item
HTTP status 200
Load time 0.227 s
Memory usage 3.04 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 0.200 s
Memory usage 3.23 MiB
JS errors None
Resource errors None

Add New Post ‹ Test site — WordPress

Page screenshot: Add New Post ‹ Test site — WordPress
URL /wp-admin/post-new.php
Aspect new-meta-boxes
HTTP status 200
Load time 0.564 s
Memory usage 5.29 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.305 s0.284 s-0.021 s2.82 MiB2.89 MiB+ 71.88 KiB
/wp-admin/edit.php0.194 s0.196 s+0.002 s2.85 MiB2.92 MiB+ 71.16 KiB
/wp-admin/post-new.php0.746 s0.854 s+0.108 s5.21 MiB5.29 MiB+ 81.82 KiB
/wp-admin/upload.php0.604 s0.445 s-0.159 s2.77 MiB2.82 MiB+ 55.3 KiB
/wp-admin/options-writing.php0.226 s0.196 s-0.030 s2.76 MiB2.81 MiB+ 47.23 KiB
/wp-admin/media-new.php0.399 s0.228 s-0.171 s2.74 MiB2.81 MiB+ 67.49 KiB
/wp-admin/edit-tags.php?taxonomy=category0.195 s0.192 s-0.003 s2.76 MiB2.83 MiB+ 72.66 KiB
/wp-admin/post-new.php?post_type=page0.606 s0.560 s-0.046 s5.21 MiB5.28 MiB+ 77.41 KiB
/wp-admin/options-discussion.php0.215 s0.219 s+0.004 s2.75 MiB2.8 MiB+ 55.77 KiB
/wp-admin/edit-comments.php0.377 s0.209 s-0.168 s2.78 MiB2.83 MiB+ 54.54 KiB
/0.292 s0.312 s+0.020 s3.13 MiB3.23 MiB+ 101.19 KiB
Average 0.378 s0.336 s-0.042 s3.25 MiB3.32 MiB+ 68.77 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
SVG
Language % Lines of code Comment lines Files
PHP55.2%1,76061926
SVG42.1%1,34535
JavaScript1.3%42486
JSON0.9%3002
CSS0.4%13154
HTML0.0%101
Total 3,191 685 44

PHP Code Analysis | More results »

Lines of code 1,594
Total complexity 285
Median class complexity 11.0
Median method complexity 2.0
Most complex class Css_Js_Manager_Admin
Most complex function Critical_Css_Type::save_meta_box_data()
Classes 19
Methods 119
Functions 6

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

Options wp_options 1

Custom Post Types 1

ID Name
pi_critical_cssCritical CSS

Meta Boxes

{
    "post": {
        "select-critical-css": {
            "title": "Select Critical CSS",
            "context": "advanced"
        }
    },
    "pi_critical_css": {
        "critical-css": {
            "title": "Critical CSS",
            "context": "advanced"
        }
    },
    "page": {
        "select-critical-css": {
            "title": "Select Critical CSS",
            "context": "advanced"
        }
    }
}

PHP Error Log 1 lines

[22-Sep-2023 12:19:17 UTC] PHP Warning:  Undefined variable $global_css in /wp-content/plugins/css-js-manager/admin/critical-css-type.php on line 144
See also: All tests for this plugin, How to Hide CSS JS Manager, Async JavaScript, Defer Render Blocking CSS Admin Menus and Meta Boxes