Why Use CAPTCHA on Your WordPress Site?

Every day, WordPress sites face millions of automated spam attacks. Bots target login forms, registration pages, and comment sections — wasting server resources, flooding your database with spam, and compromising security. RocketWP CAPTCHA stops bots at the gate with 4 proven CAPTCHA providers, including the privacy-first ALTCHA and Cloudflare Turnstile.

Key Features

4 CAPTCHA Providers in One Plugin

Cloudflare Turnstile

Privacy-friendly, no user interaction required. Automatically verifies visitors in the background. The recommended default for most sites.

Google reCAPTCHA v2/v3

Industry standard bot detection. Supports invisible reCAPTCHA v3 and checkbox v2. Works with existing Google accounts.

hCaptcha

Privacy-focused alternative to reCAPTCHA. Pays website owners for solving CAPTCHAs. GDPR-compliant by design.

ALTCHA (Self-Hosted)

Zero-config, self-hosted Proof-of-Work CAPTCHA. No third-party servers, no cookies, no data collection. The most privacy-respecting option available.

WordPress Core Form Protection

Login Form

Add CAPTCHA to wp-login.php and custom login forms. Prevent brute force attacks and credential stuffing.

Registration Form

Stop spam user registrations. Filter out bot accounts before they’re created.

Comments Form

Block automated comment spam without forcing users to log in. Works with native WordPress comments.

Password Reset

Protect the password reset flow from abuse. Prevent attackers from spamming reset emails to legitimate users.

Smart Security Features

Honeypot Protection

Invisible trap fields that only bots can see. Zero user friction — catches automated scripts silently.

Logged-In User Skip

Automatically bypass CAPTCHA for authenticated users. Your real visitors never see a challenge.

Fail-Safe Mode

If a CAPTCHA service goes down, your forms still work. Graceful degradation keeps your site accessible.

Full Compatibility & Integration

RocketWP CAPTCHA works seamlessly with any well-coded WordPress theme and plugin. No conflicts with caching plugins, page builders, or security plugins. The free version protects all WordPress core forms. Upgrade to Pro for 30+ third-party integrations including WooCommerce, EDD, Contact Form 7, WPForms, Gravity Forms, BuddyPress, and more.

How RocketWP CAPTCHA Compares to Other CAPTCHA Plugins

Most CAPTCHA plugins lock you into a single provider or hide features behind paywalls. RocketWP CAPTCHA gives you 4 providers — including self-hosted ALTCHA — all in one free plugin.

RocketWP CAPTCHA Free vs Pro — Feature Comparison

The free version protects all WordPress core forms. Upgrade to Pro for rate limiting, auto-ban, 30+ integrations, white-label, and multisite support.

How to Install & Set Up RocketWP CAPTCHA

Get started in under 5 minutes:

Step 1 — Install the plugin — Download from WordPress.org, or go to Plugins → Add New and search for “RocketWP CAPTCHA”.

Step 2 — Activate the plugin — Click Activate after installation.

Step 3 — Choose your provider — Go to Settings → RocketWP CAPTCHA and select your preferred CAPTCHA provider (Turnstile recommended).

Step 4 — Enter API keys — Add your API keys from the provider’s dashboard. ALTCHA requires no keys — it works immediately.

Frequently Asked Questions

Does this plugin slow down my WordPress site?

No. CAPTCHA scripts are loaded only on pages with forms, and we use async/defer loading to prevent render-blocking. ALTCHA and Turnstile have near-zero performance impact.

Which CAPTCHA provider should I choose?

We recommend Cloudflare Turnstile for most sites — it’s invisible, privacy-friendly, and free. If you need maximum privacy, choose ALTCHA (self-hosted, zero third-party servers). Use reCAPTCHA if you’re already in the Google ecosystem.

Can I use multiple CAPTCHA providers on the same site?

No — one provider at a time. But you can switch providers anytime with one click. Your settings are preserved per provider.

Will this work with my custom login page?

Yes — if your custom login form uses the standard WordPress login hooks, CAPTCHA will be added automatically. Custom implementations may need manual integration.

Is ALTCHA really free and self-hosted?

Yes. ALTCHA uses Proof-of-Work (PoW) — the visitor’s browser solves a small computational puzzle. No external servers, no API keys, no cookies, no data collection.