HTTP
cURL ↔ Fetch Converter
Convert method, URL, headers, and body without executing the command or contacting the destination.
How this tool works
cURL describes a command-line transfer; Fetch describes a browser request API. Their capabilities and security models differ, so conversion is a useful draft rather than a behavior-preserving compiler.
The parser intentionally handles a bounded token subset and reports ignored flags. It never evaluates shell syntax, reads files referenced by flags, resolves variables, or sends a network request.
Examples
- Convert a GET with Accept header.
- Convert a JSON POST body.
- Create a cURL draft from URL, method, header lines, and body.
Common use cases
Review after conversion
- Remove live credentials and cookies.
- Confirm browser-forbidden headers and CORS behavior.
- Review redirect, compression, TLS, cookie-jar, proxy, and timeout semantics separately.
- Check shell quoting in the target environment before running generated cURL.
Failure case: cURL ↔ Fetch
Invalid/failure example
Create a cURL draft from URL, method, header lines, and body.
Expected: The parser intentionally handles a bounded token subset and reports ignored flags. It never evaluates shell syntax, reads files referenced by flags, resolves variables, or sends a network request.
Related guides
Official references
FAQ
Does this tool send the pasted data or execute an API request?
No. Analysis runs in this browser tab. The tool does not call pasted URLs, resolve remote references, or submit the input to a DevPouch processing endpoint.
Does this support the complete cURL grammar?
No. It supports common method, header, data, data-raw, data-binary, and JSON flags. Shell expansion, config files, certificates, multipart edge cases, redirects, proxies, and many transport flags are outside scope.
Why is there a sensitive-data warning?
Authorization, Cookie, and API-key-like headers can grant access. The converter warns before copy or export so you can redact them.