Supabase JWT extractor

This simple and minimalist HTML file can be used to obtain JWT from Supabase user credentials. This can be used to debug and develop Edge Functions (to emulate users) or just to simply debug the JWT token.

Setup

First, update the Supabase credentialse in index.html

const supabaseUrl = '<SUPABASE_URL>';
const supabaseKey = '<SUPABASE_ANON_KEY>';

Then just serve the index.html file.

After opening the site, enter email and password. If the credentials are valid, JWT (and parsed JWT) will be displayed.

Future/improvements

This site currently only supports login with email and password. I plan on adding support for OAuth authentication.