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Stripe's Test Card has been used12 BILLIONΒ times

The browser extension to Auto-Fill Stripe's test payment info.

Works with:
Chrome logoChrome
Edge logoEdge
Opera logoOpera
Brave logoBrave
Avoid this πŸ˜΅β€πŸ’«
🎬Quick demo in less than 3 minutes


No more typing πŸ˜΅β€πŸ’«

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Marvin Extension




  • Browser Extension
  • Auto-Fill Card Info
  • Auto-Fill Email
  • Auto-Fill Cardholder Name
  • Manual Filling
  • Life Updates

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Frequently Asked Questions

Have a question? Contact me on Twitter or by Email.

  • While developing and debugging your application with Stripe payments, you have to type tons of times the Test Card 4242 4242 4242 4242 πŸ₯΅

    Since April 24th of 2024 (04/24) this test date is not valid anymore.

    With Marvin you can also auto-fill Email and Cardholder name fields.

  • The Browser Extension.

  • Nope. Marvin's auto-fill detects when Stripe is in Test Mode. It will not auto-fill when you visit Stripe in production mode.

    However, you can trigger it manually from the Extension's PopUp.

  • Marvin is the depressed robot from The Hitchhiker's Guide to the Galaxy.

    In these books and films series The Answer to Life, The Universe and Everything' is 42.'

    Marvin the depressed robot

The Answer to Life, The Universe and Everything

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