---
title: "StereoToMono – Chrome extension stats, history and permissions"
description: "8,000 users, rated 4.26 by 66 people. Version 1.0, updated 2023-08-03. Requests 2 permissions."
url: "https://extensiontracker.com/extension/ffekmfclcdnahgaeagcmdcnbgkcjhfld"
---

# StereoToMono

Live in the Chrome Web Store.

- Users: 8,000
- Rating: 4.26 from 66 ratings
- Last checked: 2026-11-11 17:43 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: −1,000 (-11.1%)
- Rank by users: #8,178 of 292,131 live extensions
- Rank in Accessibility: #494 of 8,374

## The listing

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

Summary from the listing:

> This extension monofies the currently playing video or audio source with a single click on the extension button.

- Extension ID: `ffekmfclcdnahgaeagcmdcnbgkcjhfld`
- Developer: [no9](https://extensiontracker.com/developer/u548b807ae588dbca7af527b6448e9ac4)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Make Chrome Yours › Accessibility](https://extensiontracker.com/category/make_chrome_yours/accessibility)
- First published: 2022-09-15
- Last updated: 2023-08-03
- Version: `1.0`
- Size: 68.47 KiB
- Minimum Chrome: 88
- Languages (1): English
- Chrome Web Store: <https://chromewebstore.google.com/detail/stereotomono/ffekmfclcdnahgaeagcmdcnbgkcjhfld>
- View its code or download CRX: <https://crxpeek.com/extension/ffekmfclcdnahgaeagcmdcnbgkcjhfld>
- Search Google for the ID: <https://www.google.com/search?q=%22ffekmfclcdnahgaeagcmdcnbgkcjhfld%22&tbs=li:1>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-11 | 8,000 | 4.26 | 66 |
| 2026-11-04 | 8,000 | 4.26 | 66 |
| 2026-10-28 | 9,000 | 4.26 | 66 |
| 2026-10-21 | 9,000 | 4.26 | 66 |
| 2026-10-14 | 9,000 | 4.26 | 66 |
| 2026-10-06 | 9,000 | 4.26 | 66 |
| 2026-09-30 | 9,000 | 4.26 | 66 |
| 2026-09-27 | 9,000 | 4.26 | 66 |

## 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.

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

### Sites where it runs scripts

- `file:///*/*`: Files on your computer
- `http://*/*`: Every website
- `https://*/*`: Every website

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `contextMenus`: Add items to the right-click menu

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Louder](https://extensiontracker.com/extension/jmpnkhemdplokdmeffenjlbpggphdapc) | 2,000 | 3.45 | 20 | Accessibility |
| [Video Speed Up](https://extensiontracker.com/extension/glehbmcdknkgdibnilmbinohdnmjggoo) | 1,000 | 3.29 | 7 | Accessibility |
| [Website Dimmer](https://extensiontracker.com/extension/oflokebamamodefnbnaaemefecjhekcg) | 524 | 3.73 | 22 | Accessibility |
| [MonoBass](https://extensiontracker.com/extension/pigpallaacbcdfmlnhhcdalgikgdihfa) | 12 | – | – | Workflow & Planning |

All 5 extensions by [no9](https://extensiontracker.com/developer/u548b807ae588dbca7af527b6448e9ac4).

## 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 2026-11-11 17:43 UTC; next check around 2026-11-18.

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

## Cite this page

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

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

---

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