CORS Proxy for solving cross-origin errors | Corsfix
Our CORS Proxy is fast and secure. Fetch any resource and solve CORS errors instantly. Start for free and scale as you grow.
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Corsfix is a secure CORS proxy service and open-source platform that lets developers fetch data from any API directly in client-side JavaScript without CORS errors.
🚀 Overview
Corsfix eliminates CORS (Cross-Origin Resource Sharing) errors by acting as a proxy: it fetches resources from any URL on behalf of your client-side app and adds the required CORS headers to the response.
This solves the problem of browsers blocking cross-origin requests to APIs that don't permit them—common in development, static sites, and production SPAs without a backend proxy.
It's built for frontend developers, indie makers building static websites, and teams needing quick API access without server-side changes. The creator built it after repeatedly hitting CORS issues while developing static sites, providing both a hosted service (free trial) and self-hostable open-source version for privacy (no request logs).
✨ Key Features
- Proxy any HTTP method (GET, POST, PUT, DELETE) and content type (JSON, HTML, images, etc.) to bypass CORS restrictions (essential for dev/prod workflows)
- Securely pass custom headers and hide API keys from client exposure
- Response caching and streaming for minimal latency and high performance (>99.9% uptime)
- Origin/domain allowlists, forbidden headers control, performance metrics tracking
- Optional: Upcoming self-hosting enhancements and playground testing
🛠 Tech Stack
- Backend: TypeScript (Node.js)
- License: AGPL-3.0
- Deployment: Self-hosted or managed via Cloud infrastructure
- Docs: Full self-hosting guide at corsfix.com/docs
👥 Who Is This For?
This project is useful for:
- Developers who want to test/fetch external APIs without CORS setup
- Teams looking for a secure, low-latency proxy without logging PII
- Indie makers building static sites/SPAs needing quick API integration
📸 Screenshots / Demo
- Live demo: https://app.corsfix.com/playground
- GitHub: https://github.com/corsfix/corsfix
🔥 Project Status
- 🟢 Actively building
Last updated: 2026-03-24
❓ FAQ
Is this project free?
Freemium — Free trial with all features (no credit card), hosted production plans; fully free open-source self-hosting.
Is the source code available?
Yes — https://github.com/corsfix/corsfix
Can I contribute?
Yes — Review CONTRIBUTING.md, open issues/PRs, or provide feedback on GitHub/Discord.
📬 Contact & Links
- Website: https://corsfix.com (also https://blockedbycors.dev)
- GitHub: https://github.com/corsfix/corsfix
- Discord: https://discord.gg/WEAeqrRjp2
- Email: hello@corsfix.com
Built with ❤️ and kept warm on WarmIndex.
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