15 plugins compared · Updated August 2026 · Validation
Choosing a WordPress plugin for validation comes down to a few things: whether it is still actively maintained, whether real users rate it well, and whether it does the specific job you need without dragging the rest of the site down.
We ranked 15 plugins using our WPScore, which weighs the user rating (adjusted for how many people actually rated it), how many sites run it, how recently it was updated, and which WordPress version it is tested against. 15 of them have enough public data to be scored; the rest are listed below the ranked block, clearly marked, rather than being given a number we cannot justify.
How this list is funded. Some links here earn us a commission if you buy. It costs you nothing extra, and it does not move anything up the list — the order comes from the WPScore, which is calculated from public ratings, install counts and update history. See the method.
At a glance
New standard of advance validation for Contact Form 7.
WPScore
Manage EU/ UK VAT in WooCommerce, validate VAT numbers real time with VIES, exempt or preserve VAT with various settings & cases.
WPScore
ZeroBounce validates emails on your WordPress site in real-time, blocking invalid and risky emails to improve deliverability and reduce bounce rates.
WPScore
Tax exemption and reverse charge VAT. VIES Validation of VAT numbers. Manage EU VAT numbers and company information for WooCommerce customers and B2B.
WPScore
The HTML Validation Plugin runs in the background, identifies and reports HTML validation errors on your website. Once activated, the HTML Validation …
WPScore
With the Byteplant Phone Validator plugin you can easily verify if a phone number is really valid and callable (https://www.byteplant.
WPScore
Setup shipping validation rules for your store. Let your customers know why they can't ship their products.
WPScore
Real-time email validation for WordPress forms. Block invalid, disposable, and risky emails to keep your database clean and improve deliverability.
WPScore
Simple and easy to use address validation & google address autocomplete plugin. Uses EasyPost, UPS, USPS, AddressFinder & Google APIs.
WPScore
Ideal Postcodes UK address search and validation extension for WooCommerce
WPScore
With the Byteplant Email Validator plugin you can easily verify with a real-time live check if an email address really exists and is valid (https://ww …
WPScore
Address Validator for WooCommerce automatically validates and corrects billing and shipping addresses for 240+ countries world-wide (https://www.
WPScore
This plugin adds an awesome feature that provides instant feedback and guidance in each field, helps prevent errors.
WPScore
Form email validation, Email Blacklist, Domain Blacklist, Form email check, Real time email validator Requires at least: 4.7 Tested up to: 6.9.
WPScore
ACF WYSIWYG Character Limit adds max-character controls to ACF editors, improving content quality, and editorial standards across WordPress.
WPScore