LukaCodes

LukaCodes AntiSpam Shield is a lightweight, no-bloat plugin that protects your WordPress comment section and contact forms from spam. Five independent tools, one settings page. <a href="https://lukacodes.com/comment-shield-docs/" rel="nofollow ugc">Read the full documentation</a>.
<ul>
<li>Disable Website Field — Removes the URL/website field from the comment form. Works with all themes, including those that hardcode the field (CSS fallback included).</li>
<li>Strip Links from Comments — Automatically removes all <code><a href></code> hyperlinks from comment content — both on display and before saving to the database. Spammers get zero benefit from posting links.</li>
<li>reCAPTCHA v3 — Adds Google’s invisible bot-score protection. No checkbox, no puzzle, no friction for real users. Bots are silently blocked server-side.</li>
<li>Cloudflare Turnstile — A privacy-friendly CAPTCHA alternative. Mutually exclusive with reCAPTCHA v3 — enabling one automatically disables the other.</li>
<li>Login Shield — Adds CAPTCHA to the WordPress login form (<code>wp-login.php</code>). Stops brute-force bots silently.</li>
<li>Registration Shield — Adds CAPTCHA to the WordPress registration form. Blocks bot account creation.</li>
<li>WPForms Integration — Apply the same CAPTCHA protection to WPForms Lite — using the same keys you already configured, no extra setup.</li>
</ul>
All features are independent — enable only what you need.
<h4>Login & Registration Shield</h4>
Version 1.1.2 adds CAPTCHA protection to <code>wp-login.php</code>:
<ul>
<li>Login Shield — Hooks into <code>wp_authenticate_user</code> for server-side verification after credentials are checked. Returns a <code>WP_Error</code> if CAPTCHA fails — WordPress displays it as a normal login error.</li>
<li>Registration Shield — Hooks into <code>registration_errors</code> to add CAPTCHA validation during registration. Works alongside all other WordPress registration validations.</li>
</ul>
Both are independently togglable in the settings panel. Admins already logged in are never affected.
<h4>WPForms Integration</h4>
Version 1.1.0 introduces CAPTCHA protection for WPForms Lite:
<ul>
<li>Hooks into <code>wpforms_display_submit_before</code> to inject the CAPTCHA widget before the submit button.</li>
<li>Hooks into <code>wpforms_process</code> for server-side token verification.</li>
<li>Works with both reCAPTCHA v3 (invisible) and Cloudflare Turnstile (visible widget).</li>
</ul>
Note: WPForms Pro includes its own native CAPTCHA integration — this feature is intended for WPForms Lite users only.
<h4>Why AntiSpam Shield?</h4>
Most anti-spam plugins are heavy, require accounts, or add ugly CAPTCHAs. LukaCodes AntiSpam Shield is different:
<ul>
<li>~30 KB total — no external libraries, no jQuery dependency</li>
<li>Settings page with live key testing — verify your reCAPTCHA or Turnstile keys before enabling</li>
<li>Link stripping preview — paste any comment text and see exactly what gets removed</li>
<li>Graceful fallback: if Google’s or Cloudflare’s API is unreachable, comments are held for moderation (never lost)</li>
<li>Trusted users (administrators) bypass CAPTCHA checks automatically</li>
<li>Mutual exclusion: reCAPTCHA v3 and Cloudflare Turnstile cannot be active at the same time</li>
<li>WP Coding Standards compliant — fully escaped output, nonce-protected AJAX</li>
</ul>
<h4>reCAPTCHA v3 — How it works</h4>
When a visitor submits a form, JavaScript silently requests a score token from Google. The token is sent with the submission and verified server-side against your minimum score threshold (configurable from 0.1 to 1.0). No user interaction required.
<h4>Cloudflare Turnstile — How it works</h4>
A Turnstile widget is rendered inside the form. When the visitor completes the challenge, a token is submitted and verified server-side against the Cloudflare API.
<h3>Third-Party Services</h3>
This plugin optionally uses the following third-party services:
<h4>Google reCAPTCHA v3</h4>
A service provided by Google LLC.
<ul>
<li>What it does: Detects bots and spam on your comment form and contact forms without user interaction.</li>
<li>When data is sent: Only when reCAPTCHA v3 is enabled. A token is sent to <code>https://www.google.com/recaptcha/api/siteverify</code> on each form submission.</li>
<li>What data is sent: The visitor’s IP address and a reCAPTCHA token.</li>
<li>Google Privacy Policy: https://policies.google.com/privacy</li>
<li>Google Terms of Service: https://policies.google.com/terms</li>
</ul>
<h4>Cloudflare Turnstile</h4>
A service provided by Cloudflare, Inc.
<ul>
<li>What it does: Presents a privacy-friendly CAPTCHA widget on comment and contact forms.</li>
<li>When data is sent: Only when Cloudflare Turnstile is enabled. A token is sent to <code>https://challenges.cloudflare.com/turnstile/v0/siteverify</code> on each form submission.</li>
<li>What data is sent: The visitor’s IP address and a Turnstile token.</li>
<li>Cloudflare Privacy Policy: https://www.cloudflare.com/privacypolicy/</li>
<li>Cloudflare Terms of Service: https://www.cloudflare.com/website-terms/</li>
</ul>
Both services are entirely optional. If you do not enter API keys or enable either CAPTCHA, no data is sent to any third party.

LukaCodes AntiSpam Shield

Block comment spam, brute-force logins and bot registrations with reCAPTCHA v3 or Cloudflare Turnstile. Lightweight, no bloat.

ScriptsTown

Login Security Captcha is a security plugin for WordPress to add CAPTCHA or CAPTCHA-free services such as Cloudflare Turnstile and Google reCAPTCHA to the WordPress login, registration, lost password, and comment form. This is a fast and lightweight security plugin to place captcha on standard WordPress forms with minimal footprints. It can prevent spam comments and protect the login form against Brute-force attacks. It has simple settings to configure the plugin quickly.
The plugin supports Cloudflare Turnstile, Google reCAPTCHA Version 2, and Version 3 with multiple options. This is the best WordPress captcha plugin for antispam protection to secure comment form and WordPress login page. It allows you to place different versions of reCAPTCHA and also Turnstile on different forms at the same time. This plugin comes with a set of simple options to quickly set up captcha validation on the common forms.
Using this security plugin, you can change the captcha theme to light or dark depending on your preferences for Cloudflare Turnstile and Google reCAPTCHA. You can also configure various other parameters like the score value for reCAPTCHA version 3. You can monitor the error logs and have the option to disable the captcha on the comment form for logged-in users. Also, you can adjust the captcha size to compact or normal for Cloudflare Turnstile.
<h3>Login Security Captcha Features</h3>
<ul>
<li>Cloudflare Turnstile</li>
<li>Google reCAPTCHA v2</li>
<li>Google reCAPTCHA v3</li>
<li>Set reCAPTCHA v3 Position</li>
<li>Captcha Theme and Size</li>
<li>Secure Login Form</li>
<li>Secure Registration Form</li>
<li>Secure Lost Password Form</li>
<li>Protect Comment Spam</li>
<li>Monitor Error Logs</li>
<li>Prevent Brute-force Attack</li>
</ul>
Upgrade To Pro – <a href="https://scriptstown.com/wordpress-plugins/login-security-pro/#pricing" title="Upgrade To Pro" rel="nofollow ugc">Click Here</a>
<h3>Login Security Pro Features</h3>
<ul>
<li>Limit Login Attempts by IP Address</li>
<li>Check and Monitor Last Login</li>
<li>Check Login History by Username</li>
<li>Recent Login Dashboard Widget</li>
<li>Cloudflare Turnstile Support</li>
<li>Google reCAPTCHA v2 and v3</li>
<li>Redirect after Login or Logout</li>
<li>Role-Based Redirection</li>
<li>Secure Login and Registration Form</li>
<li>Secure Lost Password Form</li>
<li>Easy to Protect Comment Spam</li>
<li>Login Form – WooCommerce</li>
<li>Lost Password Form – WooCommerce</li>
<li>Registration Form – WooCommerce</li>
<li>Secure WooCommerce Checkout Form</li>
<li>Advanced Security and Much More</li>
</ul>
Check Pro Plugin – <a href="https://scriptstown.com/wordpress-plugins/login-security-pro/" title="Check Pro Plugin" rel="nofollow ugc">Click Here</a>

Login Security Captcha

Secure WordPress login, registration, and comment form with Google reCAPTCHA or Cloudflare Turnstile. Prevent Brute-force attacks and more.

LukaCodes AntiSpam Shield vs Login Security Captcha