AllOrigins Alternative

What is AllOrigins?

AllOrigins (allorigins.win) is a free CORS proxy service that allows developers to fetch content from any URL with proper CORS headers. It’s part of a lineage of similar services including AnyOrigin, WhateverOrigin, and various other implementations.

The service works by accepting a target URL, fetching the content server-side, and returning it with Access-Control-Allow-Origin headers that permit browser access from any origin.

How AllOrigins Works

AllOrigins provides two response formats:

// Raw content (returns the actual page content)
const rawUrl = `https://api.allorigins.win/raw?url=${encodeURIComponent(targetUrl)}`;

// JSON wrapper (returns content in JSON structure)
const jsonUrl = `https://api.allorigins.win/get?url=${encodeURIComponent(targetUrl)}`;
const response = await fetch(jsonUrl);
const data = await response.json();
// data.contents contains the actual content

AllOrigins vs CorsProxy.io

While AllOrigins provides a free service, CorsProxy.io offers significant advantages for serious development:

Reliability: AllOrigins has no published uptime SLA and experiences periodic downtime. CorsProxy.io guarantees 99.99% uptime with 24/7 monitoring.

Performance: AllOrigins runs on limited infrastructure without global distribution. CorsProxy.io uses 300+ edge locations with intelligent caching for sub-50ms response times.

Production Ready: AllOrigins is designed for development use. CorsProxy.io is built for production workloads with proper rate limiting, monitoring, and support.

Feature Comparison

*AllOrigins has undocumented rate limits

When to Use Each

Choose AllOrigins if:

• You’re in early development/prototyping
• You have very low traffic requirements
• You don’t need reliability guarantees
• Budget is the only consideration

Choose CorsProxy.io if:

• You’re building production applications
• You need consistent performance
• You want proper support and SLAs
• You need advanced features (custom headers, caching)

Migration Example

Moving from AllOrigins to CorsProxy.io is simple:

// Before (AllOrigins)
const url = `https://api.allorigins.win/get?url=${encodeURIComponent(target)}`;
const { contents } = await fetch(url).then(r => r.json());

// After (CorsProxy.io) - direct content, no JSON wrapper
const url = `https://corsproxy.io/?url=${encodeURIComponent(target)}`;
const contents = await fetch(url).then(r => r.text());