curl to fetch
Convert a common curl command to fetch() JavaScript.
Runs in this tab. The file stays here.
fetch()
This runs in your browser. Nothing is uploaded.
About curl to fetch
Convert common curl command flags into a browser fetch() call — offline parser for everyday HTTP curls.
Docs and Slack still hand around curl one-liners. Translating -X, -H, -d, and -u into fetch() by eye is tedious. Paste the curl, get a fetch() starter with method, headers, and body wired up for the flags this parser understands.
It will not support every curl flag on earth — cookie jars, mutual TLS files, and obscure protocol knobs are out. For everyday REST examples it saves a few minutes and keeps the conversion on your machine.
API tester can send requests from the browser when you want to try an endpoint. JSON-to-TypeScript types the response body. URL encode helps with query strings.
How to use curl to fetch
- 1Paste a curl command.
- 2Review the generated fetch() snippet.
- 3Copy into your app and adjust credentials carefully.
What it won't do
- Scoped flag support — not a full curl clone.
- Does not execute the request.
Common questions
Which curl flags are supported?
Common HTTP ones: method (-X), headers (-H), body (-d/--data), basic auth (-u), and the URL. Exotic flags are ignored or unsupported.
Does converting curl send the request?
No. It only emits code. Sending is on you (or the API tester tool).
Are my Authorization headers uploaded?
No. Parsing stays in the tab — still avoid pasting production secrets into random machines.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation