React JS Captcha

Meta’s component-based library for building fast, interactive user interfaces using a virtual DOM and rich ecosystem.Drop the TrustCaptcha component into React for privacy-first bot defense—GDPR compliance, invisible proof-of-work and full theme control out of the box.

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TrustCaptcha is the privacy friendly and user focused CAPTCHA for React JS

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 React JS

Integrate TrustCaptcha with React JS 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.
Basic steps for React JSThe basic steps for your React JS integration are as follows. For detailed instructions, please read our documentation.Install Dependency
Select a tab
Npm
App
Select a tab
app.js.example
Other frontend technology instead of React JS?If you do not want to use React JS or have several websites or applications, you can select a different framework or platform here. 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.Prebuild backend integrationsYou can use one of our pre-built integrations to integrate the CAPTCHA validation process into your backend service. 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 React CAPTCHA?

A React CAPTCHA is a verification widget built as a React component that helps your application tell humans and bots apart. By dropping a single component into your JSX, you trigger a behind-the-scenes challenge–response flow that returns a token your backend can validate. Modern options, like TrustCaptcha, run invisibly and start automatically, so users rarely notice anything happening. The result is stronger security without interrupting the React user experience.

What is the best React CAPTCHA?

The “best” React CAPTCHA balances bot-blocking power, privacy, and developer friendliness. TrustCaptcha stands out because it layers a dynamic proof-of-work puzzle with an AI-driven Bot-Score and lets you fine-tune thresholds per project. You also get full UI theming, 30+ languages, and optional whitelabeling—all hosted in the EU under strict GDPR controls—so it typically outperforms proof-of-work-only competitors in both security and usability.

How does a React CAPTCHA work?

When the component mounts, it requests a lightweight cryptographic puzzle that the browser solves in milliseconds. TrustCaptcha adapts the puzzle difficulty to the visitor’s device, then combines the result with behaviour signals to compute a Bot-Score. Your backend calls the TrustCaptcha API with the token it receives; if the score and proof check out, the user proceeds, otherwise you can escalate or block.

Do I need a React CAPTCHA?

If your React app has forms, registrations, or APIs that attackers could automate, a CAPTCHA is the simplest first line of defence. It cuts spam, stops credential-stuffing bots, and protects your infrastructure from denial-of-service attempts. Because TrustCaptcha runs invisibly and meets EU privacy rules out of the box, you can add security without hurting conversion or violating GDPR.

Is TrustCaptcha GDPR-compliant?

Yes—TrustCaptcha is designed and hosted entirely within the European Union, stores no cookies, and minimises personal data by default. Standard Data-Processing Agreements and Service-Level Agreements are available in every account, so legal due-diligence is quick and audit-ready.

How customisable is TrustCaptcha in React?

You can brand the widget (or hide it completely), pick light or dark themes, switch languages automatically, and even insert your own privacy-policy URL. Developers can also override CSS variables or inject a fully custom renderer while still benefiting from the core security APIs.

How secure is TrustCaptcha compared to proof-of-work-only CAPTCHAs?

Proof-of-work alone just slows bots; TrustCaptcha combines it with real-time risk signals and lets you adjust Bot-Score thresholds per route. Internal tests show it keeps bots occupied up to five times longer than proof-of-work-only services, while legitimate users remain almost instant.