---
title: "testcase.ac – Chrome extension stats, history and permissions"
description: "1,000 users, rated 5.00 by 4 people. Version 0.3.1, updated 2025-05-18. Requests 4 permissions."
url: "https://extensiontracker.com/extension/idemfboidcafddhdkhbniobcioacjfkm"
---

# testcase.ac

Live in the Chrome Web Store.

- Users: 1,000
- Rating: 5.00 from 4 ratings
- Last checked: 2026-11-05 23:30 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: No change (+0.0%)
- Rank by users: #17,862 of 292,125 live extensions
- Rank in Education: #535 of 12,901

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> testcase.ac의 확장 프로그램

- Extension ID: `idemfboidcafddhdkhbniobcioacjfkm`
- Developer: [dlwocks31](https://extensiontracker.com/developer/u3143d30b3fdfc810879750acda0a9612)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Education](https://extensiontracker.com/category/productivity/education)
- First published: 2024-10-01
- Last updated: 2025-05-18
- Version: `0.3.1`
- Size: 64.87 KiB
- Minimum Chrome: 88
- Languages (1): 한국어
- Website: `testcase.ac`
- Chrome Web Store: <https://chromewebstore.google.com/detail/testcaseac/idemfboidcafddhdkhbniobcioacjfkm>
- View its code or download CRX: <https://crxpeek.com/extension/idemfboidcafddhdkhbniobcioacjfkm>
- Search Google for the ID: <https://www.google.com/search?q=%22idemfboidcafddhdkhbniobcioacjfkm%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-05 | 1,000 | 5.00 | 4 |
| 2026-10-30 | 1,000 | 5.00 | 4 |
| 2026-10-23 | 1,000 | 5.00 | 4 |
| 2026-10-17 | 1,000 | 5.00 | 4 |
| 2026-10-09 | 1,000 | 5.00 | 4 |
| 2026-10-01 | 1,000 | 5.00 | 4 |
| 2026-09-27 | 1,000 | 5.00 | 4 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-27.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

### Sites

- `https://testcase.ac/`: testcase.ac

### Sites where it runs scripts

- `https://www.acmicpc.net/*`: www.acmicpc.net

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `background`: Keep running in the background
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [링크드인 경력계산기](https://extensiontracker.com/extension/cflmjhnngpocnbkaihhmfemeeoagdoea) | 25 | – | – | Workflow & Planning |

All 2 extensions by [dlwocks31](https://extensiontracker.com/developer/u3143d30b3fdfc810879750acda0a9612).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-11-05 23:30 UTC; next check around 2026-11-13.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “testcase.ac” (idemfboidcafddhdkhbniobcioacjfkm). Chrome Web Store data, last checked 2026-11-05. https://extensiontracker.com/extension/idemfboidcafddhdkhbniobcioacjfkm. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_idemfboidcafddhdkhbniobcioacjfkm,
  title   = {testcase.ac (idemfboidcafddhdkhbniobcioacjfkm)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-05},
  url     = {https://extensiontracker.com/extension/idemfboidcafddhdkhbniobcioacjfkm},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/idemfboidcafddhdkhbniobcioacjfkm>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.