File Conversion

CorsProxy can convert CSV, XML, and RSS to JSON on the fly.

Production plan required: input and output require a Production plan and a valid API key.

Convert to JSON

Explicit input format

https://corsproxy.io/?key=YOUR_API_KEY&url=https://example.com/data.csv&input=csv&output=json
https://corsproxy.io/?key=YOUR_API_KEY&url=https://example.com/data.xml&input=xml&output=json
https://corsproxy.io/?key=YOUR_API_KEY&url=https://example.com/feed.xml&input=rss&output=json

Auto‑detect input

If you only set output=json, CorsProxy will auto‑detect the input format:

https://corsproxy.io/?key=YOUR_API_KEY&url=https://example.com/data&output=json

CSV delimiter override

https://corsproxy.io/?key=YOUR_API_KEY&url=https://example.com/data.csv&input=csv&output=json&delimiter=;

Response content type is application/json;charset=UTF-8.

Common errors

• Invalid input: input must be csv, xml, or rss.
• Invalid output: output must be json.
• Auto‑detect failed: if output=json without input and the format can’t be detected.

Reading RSS and Atom entries

Conversion preserves the source XML inside { type, data }; it does not normalize feeds to an items array. RSS entries are in data.rss.channel.item. Atom entries are in data.feed.entry. One entry is an object; multiple entries are an array. XML attributes use _ prefixes (enclosure._url, link._href).

const params = new URLSearchParams({
  key: 'YOUR_API_KEY', input: 'rss', output: 'json',
  url: 'https://feeds.bbci.co.uk/news/rss.xml'
});
const response = await fetch('https://corsproxy.io/?' + params);
if (!response.ok) throw new Error('HTTP ' + response.status + ': ' + await response.text());
const { data } = await response.json();
const entries = data.rss?.channel?.item;
const items = entries == null ? [] : Array.isArray(entries) ? entries : [entries];
console.log(items);

For raw RSS or Atom XML, use Free or higher for browser requests, omit input and output, and read response.text(). Try a raw feed or test JSON conversion.

See the RSS & Feeds guide for complete JavaScript, React, RSS, and Atom examples.