Free tools for .http & API work
Small, fast, no-nonsense developer tools — they run entirely in your browser, so nothing you paste is ever uploaded. No account, no sign-up, free to use.
cURL → .http
Paste any cURL command — including your browser's "Copy as cURL (bash)" — and get a clean, runnable .http request.
.http → cURL
Paste a .http request — variables and all — and get a ready-to-run cURL command for any terminal.
OpenAPI → .http
Drop an OpenAPI or Swagger (JSON) spec and get one runnable .http request per operation — variables, headers, and example bodies included.
HAR → .http
Drop a .har capture from DevTools and get clean .http requests — one per call, headers and bodies preserved.
Postman → .http
Drop a Postman Collection v2.0 or v2.1 export and get plain .http requests with folders, variables, headers, and common auth preserved.
Insomnia → .http
Drop an Insomnia v4 export and get plain .http requests with folders, environment variables, headers, and common auth preserved.
.http → code
Turn a .http request into C# HttpClient, JavaScript fetch, or PowerShell — ready to paste into your app or script.
cURL → C#
Paste a cURL command and get ready-to-paste C# HttpClient code — headers, auth, and JSON bodies included.
cURL → fetch
Paste a cURL command and get ready-to-paste JavaScript fetch code for the browser or Node.
cURL → PowerShell
Paste a cURL command and get ready-to-paste PowerShell Invoke-RestMethod code.
HAR → cURL
Drop a .har capture and get ready-to-run cURL commands — one per call, browser noise stripped.
Postman → cURL
Drop a Postman Collection export and get ready-to-run cURL commands — one per request, auth and bodies preserved.
.http validator
Check the syntax Karve actually runs, flag unresolved variables and likely secrets, and download a conservatively formatted file.
Missing a small .http utility that would save you time? Tell us.
The native home for your .http files.
These tools are free. Karve is the native Windows workspace where you organize and run the .http files they produce.
15-day free trial · No account · No subscription · No metered requests
25% off until Sep 1