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.

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Bot Protection with Turnstile lets you drop-in Cloudflare’s privacy-focused, no-CAPTCHA challenge on the most common attack surfaces of a WordPress site:
<ul>
<li>Core WordPress forms – Login, registration, password reset, and comment forms.</li>
<li>WooCommerce – Protect checkout, login, registration, and password reset forms.</li>
<li>bbPress – Secure forum registration, login, and topic creation forms.</li>
<li>Contact Form 7 – Add Turnstile to your CF7 forms to block spam submissions.</li>
<li>Accept Stripe Payments – Protect checkout and payment pop-up forms.</li>
<li>Simple Download Monitor – Secure download buttons and squeeze forms.</li>
<li>Simple Shopping Cart – Add Turnstile to your shopping cart plugin’s manual checkout forms.</li>
<li>WP Express Checkout – Protect checkout 100% discount checkout forms with Turnstile.</li>
<li>WP eMember – Secure registration, login and password reset forms with Turnstile.</li>
</ul>
Just add your Turnstile Site Key and Secret Key, choose the forms you want to protect, and you’re done. No more subjecting your users to image puzzles or accessibility headaches.
Turnstile can generate multiple types of non-intrusive challenges to verify users are human, all without showing visitors a puzzle.
<h3>Highlights</h3>
<ul>
<li>Zero-friction, user-friendly bot protection.</li>
<li>A free reCAPTCHA alternative for WordPress.</li>
<li>Works even when visitors are behind ad-blockers or privacy extensions.</li>
<li>Granular toggles to enable/disable on individual forms.</li>
<li>Debug logging feature.</li>
<li>Fully translatable and developer-friendly with action/filter hooks.</li>
<li>Road-map for upcoming integrations with other popular plugins.</li>
</ul>
<h3>Getting Started</h3>
It’s quick and easy to get started with the Bot Protection plugin.
<ul>
<li>Generate a Site Key and Secret Key in your Cloudflare account, then enter them in the plugin’s settings page.</li>
<li>Choose which forms you want to protect with Turnstile and click Save.</li>
<li>Turnstile challenges will automatically appear on the selected forms to to block bots and spam.</li>
</ul>
For more detailed instructions, please see our <a href="https://www.tipsandtricks-hq.com/bot-protection-with-turnstile-plugin" rel="nofollow ugc">setup guide</a>.
<h3>External Services</h3>
This plugin integrates with the Cloudflare Turnstile CAPTCHA service to help protect WordPress forms from spam and automated abuse.
When a protected form (such as login, registration, or comment) is displayed, the plugin connects to Cloudflare Turnstile to generate a CAPTCHA challenge. When the form is submitted, Turnstile receives the user’s IP address and browser metadata to verify whether the submission is from a human or bot.
This service is provided by Cloudflare, Inc.: 
– Terms of Service: https://www.cloudflare.com/terms/ 
– Privacy Policy: https://www.cloudflare.com/privacypolicy/

Bot Protection with Turnstile

A lightweight plugin that protects core WordPress forms and selected third‑party plugins from spam and bot attacks using Cloudflare Turnstile CAPTCHA.

LukaCodes AntiSpam Shield vs Bot Protection with Turnstile