Marvin

In plain words

Marvin is a browser extension that automatically fills in Stripe's test card and payment information during development. Designed for developers building websites with Stripe payments, it eliminates the repetitive task of manually entering test card numbers like '4242' multiple times. The extension streamlines the testing and debugging process for payment integrations.

written from the facts on this page · September 2026

From the sources

Marvin is an extension for browsers to auto-fill the Stripe's Test Card and payment info. Save time of typing '4242' tons of times while developing and debugging your website with Stripe payments.

• 
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