This plugin will allow you to check your pages/posts HTML against the W3C Validator.
| Code | Message | Location | Category | |
|---|---|---|---|---|
| ERROR | plugin_header_no_license | Missing "License" in Plugin Header. Please update your Plugin Header with a valid GPLv2 (or later) compatible license. | — | Plugin Repo |
| ERROR | WordPress.Security.EscapeOutput.OutputNotEscaped | All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$return'. | 238:18 | Security |
| ERROR | outdated_tested_upto_header | Tested up to: 5.3 < 6.8. The "Tested up to" value in your plugin is not set to the current version of WordPress. This means your plugin will not show up in searches, as we require plugins to be compatible and documented as tested up to the most recent version of WordPress. | — | Plugin Repo |
| ERROR | application_detected | Application files are not permitted. | — | Plugin Repo |
| WARNING | WordPress.WP.EnqueuedResourceParameters.MissingVersion | Resource version not set in call to wp_enqueue_script(). This means new versions of the script may not always be loaded due to browser caching. | 74:9 | Performance |
| WARNING | WordPress.WP.EnqueuedResourceParameters.MissingVersion | Resource version not set in call to wp_enqueue_style(). This means new versions of the style may not always be loaded due to browser caching. | 73:9 | Performance |
| WARNING | WordPress.WP.EnqueuedResourceParameters.NotInFooter | In footer ($in_footer) is not set explicitly wp_enqueue_script; It is recommended to load scripts in the footer. Please set this value to `true` to load it in the footer, or explicitly `false` if it should be loaded in the header. | 74:9 | Performance |
| 15.11.2025, 22:17:12 | 10s | 98 | 4 | 3 |