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5/9/2026
Building a Privacy-First URL Shortener on Blockchain

Building a Privacy-First URL Shortener on Blockchain

Short summary

Cryptly is a privacy-first URL shortener that encrypts URLs client-side and stores them on Cronos blockchain instead of a centralized database, preventing tracking and data harvesting. Built with Cloudflare Workers and Web Crypto API, it's an open-source project addressing privacy concerns with traditional shorteners like Bit.ly. Live demo and GitHub available.

  • •Traditional shorteners like Bit.ly log IPs, timestamps, and browsing patterns, then sell data to advertisers
  • •Cryptly uses client-side AES-GCM encryption and blockchain storage so servers never see destination URLs
  • •Open source project using Cloudflare Workers, Web Crypto API, and Cronos blockchain with live demo available

Generated with AI, which can make mistakes.

#product-launch#open-source
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