---
title: "YDTM — YouTube Default Theater Mode – Chrome extension stats, history and permissions"
description: "1 users, no ratings yet. Version 1.1.0, updated 2026-11-07. Requests 2 permissions."
url: "https://extensiontracker.com/extension/omblncfphdhjlehehllpapacaicdbeod"
---

# YDTM — YouTube Default Theater Mode

Live in the Chrome Web Store.

- Users: 1
- Rating: no ratings yet
- Last checked: 2026-11-12 04:35 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #253,867 of 292,131 live extensions
- Rank in Functionality & UI: #10,139 of 11,702

## The listing

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

Summary from the listing:

> Opens YouTube videos with the theater mode or fullscreen mode enabled on by default. Can be switched to enabled or disabled anytime.

- Extension ID: `omblncfphdhjlehehllpapacaicdbeod`
- Developer: [i.wisdomsky](https://extensiontracker.com/developer/u96ae44ba59414260b1fae395b3e920cb)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Make Chrome Yours › Functionality & UI](https://extensiontracker.com/category/make_chrome_yours/functionality)
- First published: 2026-11-05
- Last updated: 2026-11-07
- Version: `1.1.0`
- Size: 1.57 MiB
- Minimum Chrome: 102
- Languages (1): English
- Chrome Web Store: <https://chromewebstore.google.com/detail/ydtm-%E2%80%94-youtube-default-th/omblncfphdhjlehehllpapacaicdbeod>
- View its code or download CRX: <https://crxpeek.com/extension/omblncfphdhjlehehllpapacaicdbeod>
- Search Google for the ID: <https://www.google.com/search?q=%22omblncfphdhjlehehllpapacaicdbeod%22&tbs=li:1>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-12 | 1 | – | – |
| 2026-11-08 | – | – | – |
| 2026-11-06 | – | – | – |

## What changed

Every change found on a check, newest first.

- 2026-11-10: Now trusted by Enhanced Safe Browsing.
- 2026-11-08: New version `1.1.0`, replacing `1.0.0`.
- 2026-11-08: The summary on the listing changed.

## 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 2026-11-06.

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://www.youtube.com/*`: www.youtube.com

### Sites where it runs scripts

- `https://www.youtube.com/*`: www.youtube.com

### Browser features

- `storage`: Save settings and data in your browser

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked again 7 and 30 days after it was published, and again whenever a new version appears. Last checked 2026-11-12 04:35 UTC; next check around 2026-12-05.

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

## Cite this page

Extension Tracker. “YDTM — YouTube Default Theater Mode” (omblncfphdhjlehehllpapacaicdbeod). Chrome Web Store data, last checked 2026-11-12. https://extensiontracker.com/extension/omblncfphdhjlehehllpapacaicdbeod. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_omblncfphdhjlehehllpapacaicdbeod,
  title   = {YDTM — YouTube Default Theater Mode (omblncfphdhjlehehllpapacaicdbeod)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-12},
  url     = {https://extensiontracker.com/extension/omblncfphdhjlehehllpapacaicdbeod},
  urldate = {2026-11-13}
}
```

---

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