Test Cards icon

Test Cards

by Edward Ji · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Copy and prefill test card numbers and other payment methods with a single click.

Users
29
+3 in 30 days
Rating
3.5 / 5
unchanged in 30 days
Ratings
4
0 in 30 days
Store rank
#132K
#110K among extensions
Version
1.1.3
updated 29 Jun 2026

Users

monthly, 8 months
01429Feb 2026Jul 2026Oct 2026
Latest, 16 Oct 2026: 29 usersMove the mouse over the chart for any month

Ratings count

monthly, 8 months
024Feb 2026Jul 2026Oct 2026
Latest, 16 Oct 2026: 4 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Test Cards

Streamline your payment integration testing with instant access to test card numbers for major gateways. This extension provides a convenient side panel to browse, select, and manage the test credentials you need for any payment flow without ever leaving your active tab.

Growth

WindowUsersChangeRatingsRating
7 days−1−3.3%00.00
30 days+3+11.5%00.00
6 months+26+866.7%+2−1.50

Version history

9 versions recorded
1.1.329 Jun 2026
1.1.22 Jun 2026
1.1.127 May 2026
1.1.05 May 2026
0.4.07 Apr 2026
0.3.127 Mar 2026
0.3.023 Mar 2026
0.2.016 Mar 2026

Details

Category
Developer Tools
First seen
25 Feb 2026
Size
250 KB
Languages
en
Pricing
Free
Extension ID
ddflppoejkafcaedakefoakkmaholoeh

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
scriptingactiveTabstoragewebNavigationsidePanel
Site access
https://*/*http://*/*
Can read and change data on every website you visit.

Alternatives to Test Cards

Extensions that rank for the same store searches or share the Developer Tools category, ordered by users
GoFullPage - Full Page Screen Capture11M users · 4.9 ★ · 84,440 ratings touchenex 확장8M users · 1.2 ★ · 6,328 ratings TrendAI™ Toolbar for Enterprise7M users · 1.2 ★ · 45 ratings SentinelOne6M users · 1.4 ★ · 190 ratings React Developer Tools5M users · 3.5 ★ · 1,644 ratings ColorZilla4M users · 4.7 ★ · 3,939 ratings Take Webpage Screenshots Entirely - FireShot3M users · 4.9 ★ · 52,665 ratings WhatFont3M users · 3.8 ★ · 2,056 ratings