cURL to Fetch Converter
Translate a practical cURL request into browser Fetch code.
Translate shell requests into Fetch calls
API documentation frequently provides cURL examples, while frontend code needs fetch. This converter tokenizes the command with shell-aware handling for single quotes, double quotes, backslash escapes, and whitespace, then maps the URL, request method, headers, body, and Basic credentials into a readable Fetch call. It also includes response status checking and JSON parsing.
The default POST command becomes fetch for the items URL with method POST, a Content-Type application/json header, and the original JSON body. Quoted spaces remain inside a token instead of breaking the command. When no method is supplied, a data flag implies POST and a bodyless request defaults to GET, matching common cURL behavior.
Supported cURL options and browser differences
cURL supports far more features than browser Fetch, including client certificates, local files, proxies, and unrestricted cross-origin requests. Unsupported flags produce an error instead of being silently ignored, while harmless location and compression flags are omitted. Conversion happens in your browser and never sends the request. Review CORS, credentials, response content type, and secret headers before running the generated code.
Frequently Asked Questions
Does the converter actually send the cURL request?
No. It only parses the command and generates code locally; no URL is contacted.
Which cURL flags are supported?
It handles request method, headers, common data flags, Basic user credentials, GET mode, explicit URL, location, silent, and compressed flags.
Why might the Fetch version fail when cURL works?
Browsers enforce CORS and cannot use every transport feature or local-file option available to the cURL command-line client.
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