Testing Tools
Build any HTTP request in your browser, look up status codes and post a real HTML form.
HTTP Request TesterBuild any request – method, URL, query, headers, auth, body – send it and inspect the response.
HTTP Status CodesEvery HTTP status code with its meaning – and a live test for each one.
HTML Form TesterSubmit a real HTML form (URL-encoded or multipart) and see what the server receives.