---
title: "sidebar calendar – Chrome extension stats, history and permissions"
description: "34 users, rated 2.00 by 1 person. Version 1.4, updated 2026-03-13. Requests 4 permissions."
url: "https://extensiontracker.com/extension/cjfnffeifppecjchojhhiohnncccfamg"
---

# sidebar calendar

Live in the Chrome Web Store.

- Users: 34
- Rating: 2.00 from 1 rating
- Last checked: 2026-09-26 23:10 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #97,626 of 264,702 live extensions
- Rank in Workflow & Planning: #19,085 of 44,474

## The listing

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

Summary from the listing:

> Register events with a single drag while browsing and check them anytime in the sidebar.

- Extension ID: `cjfnffeifppecjchojhhiohnncccfamg`
- Developer: [C17AN](https://extensiontracker.com/developer/ud0b5927bca851e931f779577957133fb)
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2026-01-04
- Last updated: 2026-03-13
- Version: `1.4`
- Size: 1.23 MiB
- Minimum Chrome: 88
- Languages (2): English, 한국어
- Support page: `https://github.com/C17AN`
- Chrome Web Store: <https://chromewebstore.google.com/detail/sidebar-calendar/cjfnffeifppecjchojhhiohnncccfamg>
- View the code or download the CRX, in CRX Peek: <https://crxpeek.com/?id=cjfnffeifppecjchojhhiohnncccfamg>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-26 | 34 | 2.00 | 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.

**Every website:** it can read and change your data on all the sites you visit.

### Sites where it runs scripts

- `<all_urls>`: Every website

### Browser features

- `alarms`: Run tasks on a schedule
- `notifications`: Show notifications
- `sidePanel`: Show a side panel
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [항공대 종강시계 1.0](https://extensiontracker.com/extension/lffcahbpjjidhadlomcpckmljndafmao) | 137 | 5.00 | 8 | Social Networking |
| [한국항공대 종강시계](https://extensiontracker.com/extension/gnecckchnddjjbafpddajnbdojgbmfeg) | 51 | 5.00 | 1 | Social Networking |

All 3 extensions by [C17AN](https://extensiontracker.com/developer/ud0b5927bca851e931f779577957133fb).

## 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 23:10 UTC; next check around 2026-10-19.

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

## Cite this page

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

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

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/cjfnffeifppecjchojhhiohnncccfamg>. 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`.