P-captcha

What it does

Secure your web applications with P-captcha, a lightweight, self-hosted proof-of-work CAPTCHA solution. Zero dependencies, developer-friendly, and effective against spam, DDoS, and automation.

Zero dependencies. 2KB gziped. Runs in background using web-workers. npm install @p-captcha/node Copy 1. Install on client npm install @p-captcha/react Copy 2. Generate on server import { InMemoryCaptchaService, WoodallAliases } from "@p-captcha/node"; const captchaService = new InMemoryCaptchaService(); app.get("/api/challenge", (req, res) => { const { challenge, id } = captchaService.generateChallenge( "QuadraticResidueProblem", { woodall: WoodallAliases.md, rounds: 2, } ); res.json({ challenge, id }); }); { const { challenge, id } = captchaService.generateChallenge( "QuadraticResidueProblem", { woodall: WoodallAliases.md, rounds: 2, } ); res.json({ challenge, id }); }); "…from p-captcha.com

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