A browser extension for developers that quickly creates and autofills test card data when working with the PayPal Sandbox and Stripe Test environments.

Features

• PayPal Sandbox Cards — Randomly generate valid test cards (Visa, Mastercard, Amex, Diners, Maestro, CUP, JCB) with valid card numbers according to the Luhn algorithm

• PayPal Error Activation — Quickly autofill specific error codes for PayPal with just one click (CCREJECT-REFUSED, CCREJECT-SF, etc.)

• Stripe Test Cards — A complete list of Stripe test cards, categorized into Success, Decline, and 3DS groups

• Autofill — Automatically fills in card number, expiration date, CVV, cardholder name, and country into the payment form

• Context Menu — Right-click on any input field to directly fill in card data

• Custom Settings — Set default country, cardholder name, and card background image

• Multilingual (i18n) — Supports English and Vietnamese