CSS JS Manager, Async JavaScript, Defer Render Blocking CSS 2.4.41

Does "CSS JS Manager, Async JavaScript, Defer Render Blocking CSS" work with WordPress 6.0.1 and PHP 7.4.8? A smoke test was performed on .

Summary

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

Memory usage: 86.63 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 version6.0.1
PHP version7.4.8
MySQL version8.0.21
PHP memory limit256M
Plugin Info
Last updated
Active installs 1,000+
WordPress.org page https://wordpress.org/plugins/css-js-manager/
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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=d02764daf8
Aspect after-activation
HTTP status 200
Load time 0.309 s
Memory usage 3.77 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 0.530 s
Memory usage 3.74 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 0.163 s
Memory usage 3.8 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 0.268 s
Memory usage 3.97 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 0.234 s
Memory usage 3.66 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 0.763 s
Memory usage 5.64 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.327 s0.263 s-0.064 s3.72 MiB3.8 MiB+ 75.59 KiB
/wp-admin/edit.php0.177 s0.193 s+0.016 s3.75 MiB3.83 MiB+ 74.88 KiB
/wp-admin/post-new.php0.807 s1.095 s+0.288 s5.55 MiB5.64 MiB+ 93.9 KiB
/wp-admin/upload.php0.394 s0.317 s-0.077 s3.68 MiB3.76 MiB+ 75.12 KiB
/wp-admin/options-writing.php0.156 s0.163 s+0.007 s3.62 MiB3.73 MiB+ 118.99 KiB
/wp-admin/media-new.php0.403 s0.200 s-0.203 s3.66 MiB3.74 MiB+ 75.29 KiB
/wp-admin/edit-tags.php?taxonomy=category0.183 s0.187 s+0.004 s3.69 MiB3.76 MiB+ 76.2 KiB
/wp-admin/post-new.php?post_type=page0.816 s0.906 s+0.090 s5.54 MiB5.62 MiB+ 85.48 KiB
/wp-admin/options-discussion.php0.213 s0.255 s+0.042 s3.6 MiB3.73 MiB+ 139.57 KiB
/wp-admin/edit-comments.php0.220 s0.218 s-0.002 s3.69 MiB3.77 MiB+ 74.48 KiB
/0.265 s0.222 s-0.043 s3.6 MiB3.66 MiB+ 63.38 KiB
Average 0.360 s0.365 s+0.005 s4.01 MiB4.09 MiB+ 86.63 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
PHP55.8%1,80662427
SVG41.5%1,34535
JavaScript1.4%44466
JSON0.9%3002
CSS0.4%13154
HTML0.0%101
Total 3,239 688 45

PHP Code Analysis | More results »

Lines of code 1,640
Total complexity 300
Median class complexity 11.5
Median method complexity 2.0
Most complex class Css_Js_Manager_Admin
Most complex function Critical_Css_Type::save_meta_box_data()
Classes 20
Methods 125
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

[15-Jul-2022 21:49:09 UTC] PHP Notice:  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