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W3C validation auto check alternatives

The 12 WordPress plugins most like W3C validation auto check, by the tags they share, the most in common first. Installs, ratings and updates come from WordPress.org and refresh every night.

W3C validation auto check

60+ installs · #19,794 most popular

Its stats
Closest match
Validated
Shares 2 of W3C validation auto check's 4 tags.
Most installed
Contact Form 7 Email Validation
1K+ active installs.
Best rated
Advanced Custom Fields
4.5 out of 5 from 22 reviews.
Most recently updated
Real Time Validation For Gravity Forms
Updated on Oct 29, 2026.
  1. Validated

    by Allan Collins

    This plugin will allow you to check your pages/posts HTML against the W3C Validator.

    Installs
    500+
    Rank
    #8,723
    Rating
    4.0(5)
    Updated
    7 years ago

    Sharesvalidationw3c

    Compare with W3C validation auto check
  2. WP-Validate

    WP-Validate collects all the pages on your site and runs them through the W3C's HTML Validator.

    Installs
    10+
    Rank
    #45,550
    Rating
    No ratings
    Updated
    18 years ago

    Sharesvalidationw3c

    Compare with W3C validation auto check
  3. (x)html easy validator

    by Nikoya

    Check the doctype validity using W3c validator (html , xhtml , ... ) when creating or updating page / post / custom post type and show the result in …

    Installs
    10+
    Rank
    #36,383
    Rating
    4.0(1)
    Updated
    15 years ago

    Sharesw3cw3c validation

    Compare with W3C validation auto check
  4. Contact Form 7 Email Validation

    by Clarion Technologies

    Contact Form 7 Email Validation plugin adds an extended validation to verify domain in email address for email fields of Contact Form 7 plugin.

    Installs
    1K+
    Rank
    #6,327
    Rating
    3.3(10)
    Updated
    5 years ago

    Sharesvalidation

    Compare with W3C validation auto check
  5. UK Address Postcode Validation

    by Ideal Postcodes

    Ideal Postcodes UK address validation and postcode lookup extension for WooCommerce

    Installs
    700+
    Rank
    #7,722
    Rating
    5.0(3)
    Updated
    17 days ago

    Sharesvalidation

    Compare with W3C validation auto check
  6. Comment Validation

    by joern.zaefferer

    This plugin adds client-side validation to the Wordpress comment form, using the jQuery validation plugin.

    Installs
    700+
    Rank
    #7,754
    Rating
    5.0(1)
    Updated
    16 years ago

    Sharesvalidation

    Compare with W3C validation auto check
  7. Real Time Validation For Gravity Forms

    by PluginsCafe

    Instant, inline validation for Gravity Forms. Users see errors while filling the form, including Repeater fields and custom regular expressions.

    Installs
    500+
    Rank
    #9,002
    Rating
    5.0(2)
    Updated
    11 days ago

    Sharesvalidation

    Compare with W3C validation auto check
  8. Email Validation Filter for Contact Form 7

    by asamaruk

    Added mail validation function to Contact Form 7. Protected by rejection filter, RFC filter, and DNS filter.

    Installs
    200+
    Rank
    #11,776
    Rating
    No ratings
    Updated
    1 year ago

    Sharesvalidation

    Compare with W3C validation auto check
  9. Byteplant Email Validator

    by byteplant

    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 …

    Installs
    100+
    Rank
    #16,475
    Rating
    3.8(9)
    Updated
    2 months ago

    Sharesvalidation

    Compare with W3C validation auto check
  10. Form Validation Action Addon for Elementor

    by andresitorresm

    Add a custom validation action for Forms to your Elementor installation to run server-side validation for your form fields.

    Installs
    100+
    Rank
    #16,028
    Rating
    No ratings
    Updated
    4 months ago

    Sharesvalidation

    Compare with W3C validation auto check
  11. Byteplant Phone Validator

    by byteplant

    With the Byteplant Phone Validator plugin you can easily verify if a phone number is really valid and callable (https://www.byteplant.

    Installs
    100+
    Rank
    #15,159
    Rating
    5.0(6)
    Updated
    2 months ago

    Sharesvalidation

    Compare with W3C validation auto check
  12. Advanced Custom Fields

    by doublesharp

    The Validated Field add-on for Advanced Custom Fields provides input masking and server-side validation of other field types.

    Installs
    100+
    Rank
    #13,941
    Rating
    4.5(22)
    Updated
    11 years ago

    Sharesvalidation

    Compare with W3C validation auto check

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