Sandbox Pay

Name: Sandbox Pay
Author: David Nguyen

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

Download

Install

Features & Capabilities

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

User Growth & Download Statistics

Add-on

By:

David Nguyen

Daily users:

Version:

1.0.0 Last updated: 2026-04-04

Version code:

6203629

Creation date:

2026-04-01

Risk:

Permissions:

Content scripts matches:

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

Size:

274.31KB

Email:

de*****@eplus.dev

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 117,612 ▲ 2,347

Other rankings

#67 in paypal keyword 34

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

David Nguyen

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/sandbox-pay/

Email:

de*****@eplus.dev

Website:

https://eplus.dev

Is Sandbox Pay Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Sandbox Pay requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: appspot.com, paypal.com, stripe.com, 0.1, localhost
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Sandbox Pay is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****