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2. NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization
3. 1.19.3

NitroPack 1.19.3

Does NitroPack work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on 2026-03-19 10:13:24 UTC.

Summary

Pages 5

NitroPack Options ‹ Test site — WordPress

NitroPack

NitroPack → System Report

Test site – Just another WordPress site

Add Post ‹ Test site — WordPress

Benchmark

URL	Load time			Memory usage
	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.439 s	0.526 s	+0.087 s	3.78 MiB	4.04 MiB	+ 262.59 KiB
/wp-admin/edit.php	0.376 s	0.350 s	-0.026 s	3.79 MiB	4.11 MiB	+ 329.88 KiB
/wp-admin/post-new.php	0.889 s	0.898 s	+0.009 s	6.31 MiB	6.67 MiB	+ 372.23 KiB
/wp-admin/upload.php	0.516 s	0.440 s	-0.076 s	3.74 MiB	3.99 MiB	+ 254.32 KiB
/wp-admin/options-writing.php	0.341 s	0.334 s	-0.007 s	3.72 MiB	3.96 MiB	+ 254.33 KiB
/wp-admin/media-new.php	0.521 s	0.492 s	-0.029 s	3.71 MiB	3.95 MiB	+ 254.33 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.329 s	0.327 s	-0.002 s	3.72 MiB	4 MiB	+ 284.97 KiB
/wp-admin/post-new.php?post_type=page	0.705 s	0.704 s	-0.001 s	6.3 MiB	6.61 MiB	+ 314.36 KiB
/wp-admin/options-discussion.php	0.341 s	0.347 s	+0.006 s	3.72 MiB	3.97 MiB	+ 254.33 KiB
/wp-admin/edit-comments.php	0.338 s	0.353 s	+0.015 s	3.74 MiB	3.99 MiB	+ 254.32 KiB
/	0.297 s	0.203 s	-0.094 s	4.12 MiB	4.34 MiB	+ 219.92 KiB
Average	0.463 s	0.452 s	-0.011 s	4.24 MiB	4.51 MiB	+ 277.78 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
	PHP	78.3%	18,024	2,651	187
	JavaScript	9.0%	2,079	159	12
	Sass	8.5%	1,955	28	12
	PO File	3.4%	777	344	1
	SVG	0.8%	188	0	27
	JSON	0.0%	2	0	2
Total			23,025	3,182	241

PHP Code Analysis | More results »

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.

Options wp_options 1

• nitropack-distribution

Meta Boxes

{
    "post": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "home": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "archive": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "page": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "attachment": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "category": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "post_tag": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    },
    "post_format": {
        "nitropack_manage_cache_box": {
            "title": "NitroPack",
            "context": "side"
        }
    }
}

PHP Error Log

The log file is empty.

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