WordPress Captcha Plugin

The world’s most-used CMS, offering quick content publishing, thousands of plugins and a user-friendly dashboard.Defend WordPress sites from spam using TrustCaptcha, the privacy-friendly GDPR-ready CAPTCHA that offers one-click setup, WCAG 2.2 accessibility and bespoke styling.

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TrustCaptcha is the privacy friendly and user focused CAPTCHA for WordPress

Security & Bot-ScoreTrustCaptcha combines a proof-of-work with a bot score — similar to the reCAPTCHA score — and custom security configurations for maximum security. Learn more about the CAPTCHA security concept

Privacy Friendly & GDPR-CompliantTrustCaptcha is a privacy-first CAPTCHA solution with a clear focus on data protection and GDPR compliance. Learn more about the GDPR-compliant CAPTCHA

CustomizationAll features of the CAPTCHA widget are fully customizable such as translations or design. The branding or the entire widget can also be hidden. Learn more about the customization

AccessibilityThe CAPTCHA completely dispenses with puzzles or image marking tasks. The CAPTCHA works fully automated and complies with international accessibility standards. Learn more about the accessibility

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Integrate TrustCaptcha in WordPress

Integrate TrustCaptcha with WordPress quickly and easily into your website, application or platform in just a few steps and effectively protect your online presence and services from bot abuse.

1 – Sign in or sign up
The first thing you need to do is sign in to your Trustcomponent account. If you do not yet have a Trustcomponent account, you can register with us quickly and easily in just a few steps. After that, go to your dashboard. Here you will see all existing CAPTCHAs and can create new CAPTCHAs.
2 – Choose existing CAPTCHA or create a new CAPTCHA
If you already have a CAPTCHA that you want to use, skip this step. If you don't have a CAPTCHA yet, create a new CAPTCHA now.Create a new CAPTCHADuring the creation process, select the “TrustCaptcha” product category and choose your preferred pricing plan. If you are not yet sure which pricing plan to choose, no problem! The plan can be extended at any time. Then decide whether you want to start with the 30-day trial version or go straight to a paid subscription. If you want to start directly with a paid CAPTCHA, all you have to do is add your billing details and optionally a payment method and you're ready to go.30-day trail periodIf you opt for the 30-day trial period, you can test CAPTCHA for 30 days risk-free. At the end of the 30-day trial period, CAPTCHA locks itself. During the 30-day trial period or up to 30 days after the end of the trial period, you can unsubscribe from CAPTCHA at any time for a fee or delete it with immediate effect. If you neither subscribe to the CAPTCHA for a fee nor delete it within 30 days of the end of the free trial period, it will be deleted automatically.Non-Commercial PlanIn addition to our standard plans, we also offer a permanently free “Non Commercial“ plan with 1 website and up to 500 free verifications for non-commercial websites and projects.
3 – Add your websites and check your credentials
On the dashboard of your CAPTCHA you will find all the important information, statistics and setting options. Here you will also find your site-key, the secret-key and, if available, the license-key. You will need these later on when integrating your CAPTCHA.Add your websitesYour CAPTCHA may only be accessed by websites that you explicitly authorise. To allow websites to access the CAPTCHA, enter all the websites on which you want to integrate the CAPTCHA in the settings.
4 – Install the WordPress CAPTCHA plugin
Install the TrustCaptcha Wordpress plugin via the Wordpress Plugin Store (recommended) or download our plugin here and install ist manually. You can find more information about the installation in our documentation.Our CAPTCHA for Wordpress currently supports the following Wordpress plugins:
- BBPress New Topic
- BBPress Reply
- Contact Form 7
- Elementor Forms
- Fluent Forms
- Forminator
- Gravity Forms
- Mailchimp for WordPress
- Ninja Forms
- Ninja Forms Multi Step
- WordPress Comments
- WordPress Login
- WordPress Lost Password
- WordPress Registration
- WooCommerce Login
- WooCommerce Registration
- WooCommerce Checkout
- WooCommerce Lost Password
- WP Forms
5 – Configure the WordPress CAPTCHA plugin
Go to the plugin settings and set your site-key, secret-key and if necessary the license key. Activate the TrustCaptcha plugin for all relevant Wordpress plugins you use.
You can find more information about the installation in our documentation.
6 – Congratulations 🎉
You are now protected by TrustCaptcha - congratulations!

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Frequently Asked Questions

What is a WordPress CAPTCHA?

A WordPress CAPTCHA is a security widget that asks visitors to complete an automated test, such as a proof-of-work puzzle or image selection, to confirm they are human before a form is submitted. It blocks spam comments, brute-force logins and other bot-driven abuse on WordPress sites. CAPTCHA is the acronym for Completely Automated Public Turing Test to tell Computers and Humans Apart, first coined in 2003. Modern solutions like TrustCaptcha run invisibly and start automatically, so users see no disruptive puzzles while the protection works in the background.

What is the best WordPress CAPTCHA?

The best WordPress CAPTCHA balances strong bot defence, privacy compliance and ease of customization, especially for sites targeting EU visitors. TrustCaptcha delivers multi-layer security combining client-side proof-of-work, real-time bot scoring and granular risk settings. Its EU hosting, instant Data-Processing Agreements and SLA make it GDPR ready out of the box. Still, always evaluate options like TrustCaptcha, FriendlyCaptcha, CaptchaFox or self-hosted solutions such as Altcha against your threat model and performance goals before choosing.

How does a WordPress CAPTCHA work?

A CAPTCHA script is injected into the WordPress form, generates a token and asks the browser to complete a challenge; the server later validates that token before processing the request. TrustCaptcha kicks off this flow automatically, making the visitor perform a lightweight proof-of-work task that slows bots without bothering humans. At the same time it calculates a machine-learning bot score and passes it to your backend, where you set thresholds inside the plugin dashboard. All communication stays within EU data centres to comply with GDPR rules and avoid trans-atlantic data transfers.

Do I need a WordPress CAPTCHA?

You need a WordPress CAPTCHA if your site accepts logins, comments or contact-form submissions that are attractive targets for spam and credential-stuffing bots. Security reports show brute-force logins are still among the most common attacks on WordPress in 2025. A multi-layered system like TrustCaptcha blocks up to 99.9 percent of automated abuse before PHP ever runs, saving server resources. Even if you already use a firewall, adding a CAPTCHA provides an extra defence-in-depth layer for forms your business relies on.

Is TrustCaptcha GDPR-compliant for WordPress sites?

Yes. TrustCaptcha is fully hosted in European data centres and stores only the minimal technical data required for verification, meeting GDPR storage-limitation principles. The service ships with ready-to-sign Data-Processing and Service-Level Agreements directly inside your account dashboard, so legal compliance takes minutes not weeks. Using the official WordPress plugin therefore keeps your site GDPR-compliant without additional paperwork, unlike many US-based alternatives. This peace of mind is particularly valuable for agencies managing multiple client sites across the EU.

How does TrustCaptcha’s multi-layered security protect my WordPress forms?

TrustCaptcha protects your forms with three coordinated layers: client-side proof-of-work that costs bots CPU time, a dynamic bot-probability score and custom cut-off thresholds you adjust per form. Bots must first solve the work token and are then filtered by the score; high-risk requests are silently rejected before hitting WordPress. Because the score is calculated in real time, legitimate users pass instantly while bad traffic is blocked, maintaining user experience. Internal benchmarks show the layered model is up to five times harder for automated tools to bypass than pure proof-of-work CAPTCHAs alone.

Can I customise the appearance of TrustCaptcha in WordPress?

The plugin lets you localise TrustCaptcha into over a dozen languages, choose light or dark themes, tweak colours and even hide the badge for a full white-label experience. You can link your own privacy-policy URL and decide whether the widget appears automatically or only after a risk check, giving granular control over the flow. These design options ensure the CAPTCHA blends with any brand and keeps conversion rates high, which Google now measures through Core Web Vitals and rewards in search results. Few competitors match this level of out-of-the-box customization for WordPress.

Will TrustCaptcha slow down my site’s performance?

TrustCaptcha loads asynchronously, adds just a few kilobytes to the page and is fully compatible with Core Web Vitals, so it will not slow down your WordPress site. Because the proof-of-work runs in the browser, your server response times and cache hit ratios remain unaffected even under heavy bot traffic. Independent SEO audits confirm that lightweight scripts plus schema markup like FAQPage and QAPage are key to maintaining top performance scores in 2025. If necessary, you can lower the work factor or enable TrustCaptcha only on high-risk forms through the plugin settings for an extra speed boost.