Go to app registration page . If you have been never visited Instagram API page, it may ask you some additional questions before you can create an app.
On the Register new Client ID page specify any app name, any description and any website, but in the Valid redirect URIs field you should input the URL of this tool page. It is
After clicking a button you will be redirected to Manage Clients page with all your apps where you will find your Client ID.
And the final step — click on the Manage button to get your Client Secret.
Here we go.