Title: Jacklabs Form Sentinel
Author: Tuan Nguyen
Published: <strong>August 14, 2026</strong>
Last modified: August 14, 2026

---

Search plugins

![](https://s.w.org/plugins/geopattern-icon/jacklabs-form-sentinel.svg)

# Jacklabs Form Sentinel

 By [Tuan Nguyen](https://profiles.wordpress.org/seowebsite0711/)

[Download](https://downloads.wordpress.org/plugin/jacklabs-form-sentinel.zip)

 * [Details](https://wordpress.org/plugins/jacklabs-form-sentinel/#description)
 * [Reviews](https://wordpress.org/plugins/jacklabs-form-sentinel/#reviews)
 *  [Installation](https://wordpress.org/plugins/jacklabs-form-sentinel/#installation)
 * [Development](https://wordpress.org/plugins/jacklabs-form-sentinel/#developers)

 [Support](https://wordpress.org/support/plugin/jacklabs-form-sentinel/)

## Description

Jacklabs Form Sentinel helps reduce automated spam on WordPress comments, registration,
frontend login forms rendered with `wp_login_form()`, Contact Form 7, and WooCommerce
account forms.

The default login form at `wp-login.php` is intentionally excluded to reduce the
risk of administrators being locked out by an incorrect key configuration.

This plugin requires Google reCAPTCHA v2 “I’m not a robot” Checkbox keys. It does
not support reCAPTCHA v3 keys.

### External services

This plugin connects to Google reCAPTCHA, a service provided by Google LLC, only
after an administrator saves a Site Key and Secret Key.

On pages containing protected forms, the plugin loads JavaScript from `https://www.
google.com/recaptcha/api.js`. Google may receive visitor information such as IP 
address, browser and device information, cookies, and interaction data. When a visitor
submits a protected form, the plugin sends the reCAPTCHA response token, configured
Secret Key, and visitor IP address to `https://www.google.com/recaptcha/api/siteverify`
to determine whether the submission is valid.

This data is sent when a protected form is displayed or submitted. The service is
necessary for the plugin’s reCAPTCHA functionality.

Google Privacy Policy: https://policies.google.com/privacy

Google Terms of Service: https://policies.google.com/terms

Google reCAPTCHA information and terms: https://www.google.com/recaptcha/about/

## Installation

 1. Upload the plugin folder to `/wp-content/plugins/` or install the ZIP file from
    the WordPress admin area.
 2. Activate the plugin.
 3. Go to Settings > Google reCAPTCHA.
 4. Enter reCAPTCHA v2 Checkbox Site Key and Secret Key.
 5. Contact Form 7 widgets are inserted automatically. Optionally use `[jlfpr_recaptcha]`
    to control their position.

## FAQ

### Does this protect the default WordPress login page?

No. The form at `wp-login.php` is intentionally excluded. A frontend form produced
by `wp_login_form()` can be protected.

### Which reCAPTCHA key type should I use?

Create reCAPTCHA v2 Checkbox keys for your domain in Google reCAPTCHA Admin.

### What happens if Google verification is unavailable?

The protected submission is rejected. This fail-closed behavior prevents unverified
submissions from bypassing protection.

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“Jacklabs Form Sentinel” is open source software. The following people have contributed
to this plugin.

Contributors

 *   [ Tuan Nguyen ](https://profiles.wordpress.org/seowebsite0711/)

[Translate “Jacklabs Form Sentinel” into your language.](https://translate.wordpress.org/projects/wp-plugins/jacklabs-form-sentinel)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/jacklabs-form-sentinel/),
check out the [SVN repository](https://plugins.svn.wordpress.org/jacklabs-form-sentinel/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/jacklabs-form-sentinel/)
by [RSS](https://plugins.trac.wordpress.org/log/jacklabs-form-sentinel/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.0.2

 * Renamed the plugin with a distinctive, trademark-neutral display name and slug.
 * Applied a unique prefix to declarations, stored data, asset handles, settings,
   and form fields.
 * Updated the WordPress.org contributor username.

#### 1.0.1

 * Added WordPress.org-compatible plugin metadata and documentation.
 * Added external-service and privacy disclosures.
 * Added suggested site privacy-policy text.
 * Improved input validation, API error handling, escaping, and internationalization.
 * Fixed corrupted text encoding and made frontend assets human-readable.

#### 1.0.0

 * Initial release.

## Meta

 *  Version **1.0.2**
 *  Last updated **15 hours ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 6.0 or higher **
 *  Tested up to **7.0.4**
 *  PHP version ** 7.4 or higher **
 * Tags
 * [comments](https://wordpress.org/plugins/tags/comments/)[contact form 7](https://wordpress.org/plugins/tags/contact-form-7/)
   [recaptcha](https://wordpress.org/plugins/tags/recaptcha/)[spam](https://wordpress.org/plugins/tags/spam/)
   [woocommerce](https://wordpress.org/plugins/tags/woocommerce/)
 *  [Advanced View](https://wordpress.org/plugins/jacklabs-form-sentinel/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/jacklabs-form-sentinel/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/jacklabs-form-sentinel/reviews/)

## Contributors

 *   [ Tuan Nguyen ](https://profiles.wordpress.org/seowebsite0711/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/jacklabs-form-sentinel/)