FastCache by host.it 1.5.3

Does FastCache by host.it work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
37PHP warnings
1PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 212.73 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+
WordPress.org page https://wordpress.org/plugins/fastcache-by-host-it/
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Pages 5

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=fastcache-by-host-it%2Ffastcache.php&plugin_status=all&paged=1&s&_wpnonce=949a818bab
Aspect after-activation
HTTP status 200
Load time 0.461 s
Memory usage 3.93 MiB
JS errors None
Resource errors None

Settings → FastCache Settings

Page screenshot: Settings → FastCache Settings
URL /wp-admin/options-general.php?page=fastcache
Aspect menu-item
HTTP status 200
Load time 0.966 s
Memory usage 4.98 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 0.393 s
Memory usage 4.31 MiB
JS errors None
Resource errors None

Add Page ‹ Test site — WordPress

Page screenshot: Add Page ‹ Test site — WordPress
URL /wp-admin/post-new.php?post_type=page
Aspect new-meta-boxes
HTTP status 200
Load time 1.075 s
Memory usage 6.54 MiB
JS errors None
Resource errors None

Add Post ‹ Test site — WordPress

Page screenshot: Add Post ‹ Test site — WordPress
URL /wp-admin/post-new.php
Aspect new-meta-boxes
HTTP status 200
Load time 1.656 s
Memory usage 6.58 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.617 s0.628 s+0.011 s3.77 MiB3.98 MiB+ 213.05 KiB
/wp-admin/edit.php0.577 s0.459 s-0.118 s3.78 MiB3.98 MiB+ 206.23 KiB
/wp-admin/post-new.php1.025 s1.133 s+0.108 s6.3 MiB6.59 MiB+ 289.94 KiB
/wp-admin/upload.php0.653 s0.574 s-0.079 s3.74 MiB3.92 MiB+ 187.98 KiB
/wp-admin/options-writing.php0.478 s0.402 s-0.076 s3.71 MiB3.9 MiB+ 192.29 KiB
/wp-admin/media-new.php0.650 s0.650 s+0.000 s3.7 MiB3.9 MiB+ 200.48 KiB
/wp-admin/edit-tags.php?taxonomy=category0.415 s0.408 s-0.007 s3.71 MiB3.92 MiB+ 210.84 KiB
/wp-admin/post-new.php?post_type=page0.889 s0.927 s+0.038 s6.29 MiB6.54 MiB+ 250.73 KiB
/wp-admin/options-discussion.php0.460 s0.463 s+0.003 s3.71 MiB3.9 MiB+ 188.48 KiB
/wp-admin/edit-comments.php0.420 s0.435 s+0.015 s3.73 MiB3.92 MiB+ 188.29 KiB
/0.577 s0.341 s-0.236 s4.1 MiB4.31 MiB+ 211.75 KiB
Average 0.615 s0.584 s-0.031 s4.23 MiB4.44 MiB+ 212.73 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
PO File
JavaScript
Language % Lines of code Comment lines Files
PHP70.9%16,8285,646128
CSS11.8%2,7973727
PO File9.0%2,1431,5871
JavaScript8.2%1,95933917
HTML0.1%2003
SVG0.0%101
Total 23,748 7,944 157

PHP Code Analysis | More results »

Lines of code 16,518
Total complexity 3,284
Median class complexity 17.0
Median method complexity 1.0
Most complex class FastCache\Core\SimpleHtmlDomNode
Most complex function FastCache\Core\LightImages::processImageNodes()
Classes 101
Methods 951
Functions 9

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.

Meta Boxes

{
    "page": {
        "fastcache": {
            "title": "Host Caching",
            "context": "side"
        }
    },
    "post": {
        "fastcache": {
            "title": "Host Caching",
            "context": "side"
        }
    }
}

PHP Error Log 38 lines

[15-Dec-2025 16:12:22 UTC] PHP Deprecated:  Automatic conversion of false to array is deprecated in /wp-content/plugins/fastcache-by-host-it/src/Admin/Settings/Renderer/Setting.php on line 674
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Html/Callbacks/CombineJsCss.php on line 81
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:23 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:24 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Html/Callbacks/CombineJsCss.php on line 81
[15-Dec-2025 16:12:24 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:24 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:24 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:25 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Combiner.php on line 163
[15-Dec-2025 16:12:37 UTC] PHP Warning:  Undefined variable $isBot in /wp-content/plugins/fastcache-by-host-it/src/Core/Html/Callbacks/CombineJsCss.php on line 81
See also: All tests for this plugin, How to Hide FastCache by host.it Admin Menus and More