CodeCaptcha - Hide web links behind coding challenges
Hello HN, I made this silly project over the long weekend. It’s pretty basic right now and the captchas are very easy. I plan to add captcha difficulty levels for link creators soon.
CodeCaptcha - Hide web links behind coding challenges launched on January 19, 2022 with 163 votes, #179 of 2,891 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 4 years on.
In plain words
CodeCaptcha is a tool that requires users to solve coding challenges before accessing web links. It's designed for developers who want to add an extra step before sharing URLs. The current version features basic functionality with easy captcha puzzles, and the creator plans to introduce adjustable difficulty levels so link creators can customize the challenge intensity.
written from the facts on this page · September 2026
From the sources
Hide your web link behind a coding challenge.
Sometimes you want to share a link (like job postings, google forms, your project, a secret sub-page etc) to programmers only. This service let's you do that while also preventing abuse and spam. It creates a unique link that you can share instead of your unprotected original link. Visitors are presented with a random coding problem to solve. The solution is almost always 1-3 lines and can be solved in minutes. As of now we only support JavaScript. We may add more languages if there is demand. That is intentional. Soon we will let you choose difficulty level when creating afrom codecaptcha.io
Does a similar job
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Replace CAPTCHAs with WebAuthn passkeys for bot prevention2024 · github.com · ▲71I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs




VisualCaptcha2016 · visualcaptcha.net · ▲6A configurable captcha solution, focusing on accessibility
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