The Validated Field add-on for Advanced Custom Fields provides input masking and server-side validation of other field types.
As of April 2026, Advanced Custom Fields: Validated Field is a WordPress acf plugin with 200 active installations and a 4.5/5 rating from 22 reviews. It has been downloaded 18K+ times in total. Requires WordPress 3.0+ and PHP false+. Available on WordPress.org since 2012. Last updated 10 years ago — may have compatibility concerns. Top alternative: Advanced Custom Fields (ACF®).
The Validated Field add-on for Advanced Custom Fields
provides a wrapper for other input types which allows you to provide client side input masking using the jQuery
Masked Input Plugin, server side validation using either PHP regular expressions
or PHP code, the option of ensuring a field’s uniqueness for all posts by post_type and meta_key, post_type, or site wide, or a
single post by meta_key, as well as marking a field as read-only. Edit your fields in the ACF Field Group editor and update code using the ACE.js
IDE with autocomplete and syntax validation.
| WordPress | 3.0+ requiredTested up to 4.3.34 |
| PHP | false+ required |
json_encode() to support PHP 5.2.Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.