---
title: "T2Extension – Chrome extension stats, history and permissions"
description: "760 users, rated 5.00 by 1 person. Version 1.1.2, updated 2025-03-01. Requests 4 permissions."
url: "https://extensiontracker.com/extension/dfnahnkjpnfaadikghkhafpcoekpphfi"
---

# T2Extension

Live in the Chrome Web Store.

- Users: 760
- Rating: 5.00 from 1 rating
- Last checked: 2026-09-26 23:46 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #27,930 of 264,703 live extensions
- Rank in Education: #811 of 11,063

## The listing

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

Summary from the listing:

> Automatic, fast login to Tokyo Tech (Titech) Potal

- Extension ID: `dfnahnkjpnfaadikghkhafpcoekpphfi`
- Developer: [Yoshito Ohata](https://extensiontracker.com/developer/u2f9cff6577e185070ab5040a3f3f3705)
- Category: [Productivity › Education](https://extensiontracker.com/category/productivity/education)
- First published: 2024-04-04
- Last updated: 2025-03-01
- Version: `1.1.2`
- Size: 1.86 MiB
- Minimum Chrome: 88
- Languages (1): 日本語
- Chrome Web Store: <https://chromewebstore.google.com/detail/t2extension/dfnahnkjpnfaadikghkhafpcoekpphfi>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fdfnahnkjpnfaadikghkhafpcoekpphfi>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-26 | 760 | 5.00 | 1 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-26.

## What it can access

From the extension's manifest, in plain language.

### Sites

- `https://*.titech.ac.jp/*`: titech.ac.jp and its subdomains

### Sites where it runs scripts

- `https://portal.nap.gsic.titech.ac.jp/*`: portal.nap.gsic.titech.ac.jp
- `https://portal.titech.ac.jp/`: portal.titech.ac.jp
- `https://portal.titech.ac.jp/portal-e.pl`: portal.titech.ac.jp
- `https://portal.titech.ac.jp/portal.pl`: portal.titech.ac.jp
- `https://rp.nap.gsic.titech.ac.jp/vpnaccess_apm/service/`: rp.nap.gsic.titech.ac.jp

### Browser features

- `clipboardRead`: Read what you copy
- `clipboardWrite`: Change what's in your clipboard
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [ISCT Login](https://extensiontracker.com/extension/ihgmoniglglmlfomngmablaniliimani) | 249 | – | – | Education |
| [PRs Inbox for GitHub](https://extensiontracker.com/extension/fmghddbkgblnhhgckmkcefehnmooojjf) | 13 | – | – | Developer Tools |

All 3 extensions by [Yoshito Ohata](https://extensiontracker.com/developer/u2f9cff6577e185070ab5040a3f3f3705).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-09-26 23:46 UTC; next check around 2026-10-22.

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

## Cite this page

Extension Tracker. “T2Extension” (dfnahnkjpnfaadikghkhafpcoekpphfi). Chrome Web Store data, last checked 2026-09-26. https://extensiontracker.com/extension/dfnahnkjpnfaadikghkhafpcoekpphfi. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_dfnahnkjpnfaadikghkhafpcoekpphfi,
  title   = {T2Extension (dfnahnkjpnfaadikghkhafpcoekpphfi)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-26},
  url     = {https://extensiontracker.com/extension/dfnahnkjpnfaadikghkhafpcoekpphfi},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/dfnahnkjpnfaadikghkhafpcoekpphfi>. 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. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.