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.

Aneesh MK

Cybernob Turnstile for Cloudflare integrates <a href="https://www.cloudflare.com/products/turnstile/" rel="nofollow ugc">Cloudflare Turnstile</a> into your WordPress site — the privacy-friendly CAPTCHA that stops bots silently, without making real users solve puzzles.
This plugin is an independent, third-party integration and is not affiliated with or endorsed by Cloudflare, Inc.
<h4>Protected locations</h4>
<ul>
<li>Login form — blocks brute-force and credential-stuffing attacks</li>
<li>Registration form — prevents automated account creation</li>
<li>Comment form — stops spam comments without Akismet</li>
<li>Contact Form 7 — automatically protects every CF7 form on your site</li>
</ul>
<h4>Features</h4>
<ul>
<li>Live status checker — the settings page shows instantly whether your API keys are valid and reachable</li>
<li>Invisible mode — widget stays hidden; the form auto-submits once the challenge passes silently</li>
<li>Three themes — Auto (follows system preference), Light, Dark</li>
<li>Two appearance modes — Always visible, or show on interaction only</li>
<li>Clean uninstall — all plugin options are removed on deletion, including multisite support</li>
<li>Translation ready — all strings wrapped in i18n functions with the correct text domain</li>
<li>No bundled libraries — only Cloudflare’s own CDN script is used; nothing extra added to your site</li>
</ul>
<h4>Why Turnstile?</h4>
Unlike reCAPTCHA, Cloudflare Turnstile does not track users across sites or require Google accounts. It is designed to be GDPR-friendly and invisible to legitimate users by default.
<h4>Getting started</h4>
<ol>
<li>Create a free <a href="https://dash.cloudflare.com/?to=/:account/turnstile" rel="nofollow ugc">Cloudflare Turnstile</a> site widget</li>
<li>Copy your Site Key and Secret Key</li>
<li>Paste them into Settings → Cybernob Turnstile and save</li>
<li>The live status indicator confirms everything is working</li>
</ol>
<h3>External Services</h3>
This plugin connects to Cloudflare’s Turnstile service to display CAPTCHA challenges and verify user responses.
<ul>
<li>Service: Cloudflare Turnstile</li>
<li>When used: When a protected form is loaded (widget script) or submitted (token verification). Only active after the administrator has entered API keys in the plugin settings.</li>
<li>Data sent: On verification — the Turnstile response token and the visitor’s IP address are sent to Cloudflare’s API endpoint.</li>
<li>Endpoint: https://challenges.cloudflare.com/turnstile/v0/siteverify</li>
</ul>
<a href="https://www.cloudflare.com/terms/" rel="nofollow ugc">Cloudflare Terms of Service</a> | <a href="https://www.cloudflare.com/privacypolicy/" rel="nofollow ugc">Cloudflare Privacy Policy</a>

Cybernob Turnstile for Cloudflare

Lightweight Cloudflare Turnstile CAPTCHA protection for WordPress login, registration, comments, and Contact Form 7.

LukaCodes AntiSpam Shield vs Cybernob Turnstile for Cloudflare