Which curl flags are understood?

-X (method), -H (headers), -d and --data (body), -F (form), -u (basic auth), -b and -c (cookies), -L (follow redirects), --connect-timeout.

Does it handle multipart?

Yes — -F flags become FormData with file references or string values. You'll need to adjust file paths to match your runtime context.

Toggle for async/await + types. The tool infers the response shape as `any` by default; switch to `unknown` for strict TS.

Core functionality yes. curl's niche features (NTLM auth, client certs, HTTP/3) aren't in browser fetch and are marked as TODO.

Convert a curl command into a JS fetch() call. Part of the DevTools Surf developer suite. Browse more tools in the Developer Utilities collection.

cURL was first released by Daniel Stenberg on March 20, 1998, and its name stands for 'Client URL' — it now supports over 25 protocols.
The Fetch API was introduced as a modern replacement for XMLHttpRequest and became a living standard through the WHATWG in 2015.
cURL is installed on virtually every Unix system and has been downloaded over 10 billion times, making it one of the most widely deployed software packages ever.

Which curl flags are understood?: -X (method), -H (headers), -d and --data (body), -F (form), -u (basic auth), -b and -c (cookies), -L (follow redirects), --connect-timeout.
Does it handle multipart?: Yes — -F flags become FormData with file references or string values. You'll need to adjust file paths to match your runtime context.
Can I generate TypeScript?: Toggle for async/await + types. The tool infers the response shape as `any` by default; switch to `unknown` for strict TS.
Is the fetch equivalent 100%?: Core functionality yes. curl's niche features (NTLM auth, client certs, HTTP/3) aren't in browser fetch and are marked as TODO.

Convert a curl command into a JS fetch() call. Part of the DevTools Surf developer suite. Browse more tools in the Developer Utilities collection.

cURL was first released by Daniel Stenberg on March 20, 1998, and its name stands for 'Client URL' — it now supports over 25 protocols.
The Fetch API was introduced as a modern replacement for XMLHttpRequest and became a living standard through the WHATWG in 2015.
cURL is installed on virtually every Unix system and has been downloaded over 10 billion times, making it one of the most widely deployed software packages ever.

Which curl flags are understood?: -X (method), -H (headers), -d and --data (body), -F (form), -u (basic auth), -b and -c (cookies), -L (follow redirects), --connect-timeout.
Does it handle multipart?: Yes — -F flags become FormData with file references or string values. You'll need to adjust file paths to match your runtime context.
Can I generate TypeScript?: Toggle for async/await + types. The tool infers the response shape as `any` by default; switch to `unknown` for strict TS.
Is the fetch equivalent 100%?: Core functionality yes. curl's niche features (NTLM auth, client certs, HTTP/3) aren't in browser fetch and are marked as TODO.