NodeJS Captcha

A runtime that executes JavaScript on the server, ideal for real-time APIs thanks to its event-driven, non-blocking model.TrustCaptcha plugs into any Node.js API to deliver privacy-first bot defense, using energy-aware proof-of-work that won’t slow real users.

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TrustCaptcha is the privacy friendly and user focused CAPTCHA for NodeJS

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 NodeJS

Integrate TrustCaptcha with NodeJS 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 – Solve the CAPTCHA in your frontend
Integrate the CAPTCHA widget into your website or app. You can find detailed instructions for the frontend integration in our documentation. The CAPTCHA widget will then be displayed on your website or app.
Prebuild frontend integrationsYou can use one of our pre-built integrations to integrate the CAPTCHA widget into your website or application. If there is no pre-built integration from us for your preferred frontend technology, your software developers can integrate the CAPTCHA themselves using our documentation or ask our support-team for a pre-built integration solution.
5 – Validate the CAPTCHA result in your backend
When the CAPTCHA has finished, take the verification token and send it to your backend. Then retrieve the verification result from our servers and determine your next steps. You can find detailed information on backend integration in our documentation.Basic steps for NodeJSThe basic steps for your NodeJS integration are as follows. For detailed instructions, please read our documentation.Install Dependency
Select a tab
Npm
Fetch Result
Select a tab
Fetch Result
Handle Result
Select a tab
Handle Result
Other backend technology instead of NodeJS?If you do not want to use NodeJS or have several backend services you can select a different language or framework here. If there is no pre-built integration from us for your preferred backend technology, your software developers can integrate the CAPTCHA themselves using our documentation or ask our support-team for a pre-built integration solution.
6 – Congratulations 🎉
You are now protected by TrustCaptcha - congratulations!

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Frequently Asked Questions

What is a NodeJS CAPTCHA?

A NodeJS CAPTCHA is a small verification step that you plug into a Node.js server to tell humans and bots apart. The browser runs a challenge, then sends a secure token back to your Node.js API for verification. This keeps automated scripts from abusing your forms, sign-ups or payment endpoints and is an essential first line of defence against spam and credential stuffing.

What is the best NodeJS CAPTCHA?

The “best” option combines robust security, privacy and user experience. TrustCaptcha stands out because it layers a dynamic proof-of-work puzzle with an AI-driven bot-score and lets you fine-tune security thresholds, all while hosting entirely in the EU for seamless GDPR compliance. Developers also appreciate its 35+ languages, white-label mode and invisible option, so you get protection without hurting conversions.

How does a NodeJS CAPTCHA work?

In practice, the widget runs client-side where it executes a lightweight, energy-aware proof-of-work. TrustCaptcha then adds behavioural signals to calculate a bot-score and signs the result into a token. Your Node.js backend validates that token via TrustCaptcha’s API and decides whether to allow, challenge further or block the request.

Do I need a NodeJS CAPTCHA?

If your Node.js service accepts user-generated input—think login, contact, checkout or comment forms—you’re a target for spam, brute-force and credential-stuffing bots. A CAPTCHA like TrustCaptcha closes that gap before the request even hits your business logic, saving server resources and protecting user data. Because it runs automatically and is WCAG-friendly, you won’t add friction for legitimate visitors.

Is TrustCaptcha GDPR-compliant for EU applications?

Yes. TrustCaptcha processes and stores all CAPTCHA data exclusively within EU data centres, uses no cookies, and offers a ready-to-sign Data Processing Agreement (DPA) to every customer. This means you can meet strict GDPR requirements without building additional consent workflows.

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Can I customise the look and feel of TrustCaptcha?

Absolutely. You can choose light, dark or auto themes, set custom colours and corner radii, translate or override any text, and even hide the entire widget for an invisible experience. You can also swap the branding for your own logo or link to a custom privacy page, letting the CAPTCHA blend seamlessly with your design system.