• Grant Type Authorization Code Password Implicit Client Credentials Refresh Token
• Authorization URL
• Token URL
• Client Redirect URI
• Client ID
• Client Secret
• Scope
• Extra

• Grant Type Authorization Code Password Implicit Client Credentials Refresh Token
• Token URL
• Client ID
• Client Secret
• Username
• Password
• Scope
• Extra

• Grant Type Authorization Code Password Implicit Client Credentials Refresh Token
• Authorization URL
• Client Redirect URI
• Client ID
• Scope
• Extra

• Grant Type Authorization Code Password Implicit Client Credentials Refresh Token
• Token URL
• Client ID
• Client Secret
• Scope
• Extra

• Grant Type Authorization Code Password Implicit Client Credentials Refresh Token
• Token URL
• Client ID
• Client Secret
• Refresh Token
• Scope
• Extra

Is this secure?

No :) Why would you trust this site with your OAuth credentials and tokens?

Is it convenient?

Reasonably so.