# Sandbox Pay

> A browser extension for developers to quickly generate and auto-fill test card data when working with PayPal Sandbox and Stripe Test environments.

Canonical page: [https://chrome-stats.com/d/sandbox-pay](https://chrome-stats.com/d/sandbox-pay)

## Overview

- **ID:** `sandbox-pay`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** David Nguyen
- **Category:** web-development,language-support
- **Daily users:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-04-04
- **First published:** 2026-04-01
- **Size:** 274 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/sandbox-pay/)
- **Website:** [https://eplus.dev](https://eplus.dev/)

## Description

Features
PayPal Sandbox cards — Generate random valid test cards (Visa, Mastercard, Amex, Diners, Maestro, CUP, JCB) with Luhn-valid numbers
PayPal error triggers — One-click fill for PayPal-specific error codes (CCREJECT-REFUSED, CCREJECT-SF, etc.)
Stripe test cards — Full list of Stripe test cards categorized by Success, Decline, and 3DS
Auto-fill — Automatically fills card number, expiry, CVV, cardholder name, and country into payment forms
Context menu — Right-click on any input field to fill card data directly
Customizable settings — Set default country, cardholder name, and card background images
i18n — Supports English and Vietnamese

## Rankings

- #99,476 — Overall
- #67 — paypal

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `contextMenus`
- `storage`

### Content script matches

- `*.appspot.com`
- `*.paypal.com`
- `*.sandbox.paypal.com`
- `*.stripe.com`
- `127.0.0.1`
- `localhost`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Request access to the following domains: appspot.com, paypal.com, stripe.com, 0.1, localhost
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Test Cards](https://chrome-stats.com/d/test-cards) — 6 users, 5.00 / 5
- [Payment Data Cheatsheet](https://chrome-stats.com/d/payment-data-cheatsheet) — 1 users
- [Test Payment Cards Extension](https://chrome-stats.com/d/test-payment-cards-extension) — 21 users
- [PayPal Autofill Pro](https://chrome-stats.com/d/paypal-autofill-pro)
- [Credit Card Generator](https://chrome-stats.com/d/credit-card-generator) — 30 users
- [Paypal Bot](https://chrome-stats.com/d/paypal-bot) — 22 users, 5.00 / 5
- [FakerFill](https://chrome-stats.com/d/fakerfill) — 82 users, 5.00 / 5
- [Instant Form Filler](https://chrome-stats.com/d/instant-form-filler) — 1 users
- [Address Generator](https://chrome-stats.com/d/address-generator) — 8 users
- [Fake Filler learn more](https://chrome-stats.com/d/fake-filler-learn-more) — 1 users
- [Adyen Test Cards](https://chrome-stats.com/d/adyen-test-cards) — 5 users
- [Auto Fill Fake Data Generator](https://chrome-stats.com/d/auto-fill-fake-data-generator) — 8 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/sandbox-pay)