Extension Tracker

WEBM to MP4 converter: WebCodecs and FFmpeg support

4,000 users Rated 4.29 from 21 ratings Last updated 4 Dec 2025

By dreambuilder.first Live in the Chrome Web Store mfjlolbldcokknaeaaphebndgeicolfm Last checked 27 Sep 2026, 05:31 UTC

The listing

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

🎬 Convert WEBM to MP4 instantly and securely. No server uploads, unlimited file conversions, works locally in your browser.Summary from the listing
Developer
dreambuilder.first
Category
Productivity › Tools
First published
30 Sep 2024
Last updated
4 Dec 2025
Version
1.4.0
Size
10.07 MiB
Minimum Chrome
88
Languages
52 languages

Deutsch, English, Filipino, Indonesia, Kiswahili, Melayu, Nederlands, Tiếng Việt, Türkçe, català, dansk, eesti, español, español (Latinoamérica), français, hrvatski, italiano, latviešu, lietuvių, magyar, norsk, polski, português (Brasil), português (Portugal), română, slovenčina, slovenščina, suomi, svenska, čeština, Ελληνικά, български, русский, српски, українська, עברית, العربية, فارسی, मराठी, हिन्दी, বাংলা, ગુજરાતી, தமிழ், తెలుగు, ಕನ್ನಡ, മലയാളം, ไทย, አማርኛ, 中文（中国）, 中文（台灣）, 日本語, 한국어

Privacy policy
https://docs.google.com/document/d/10cQiuVkcKjRn8Zuzl4jVyNEytslPU-RQPQqvubL7ybU/edit?usp=sharing
Open in the Chrome Web Store ↗ View the code or download the CRX in CRX Peek ↗
Users over time As shown on the Chrome Web Store

Tracking began on 27 Sep 2026. The chart appears after the second check.

Show the numbers
CheckedUsersRatingRatings
2026-09-274,0004.2921
Users, 7 days
–
needs a week of history
Users, 30 days
–
needs a month of history
Rank
#11,220
by users, of 264,702 extensions
In its category
#2,683
of 103,498 in Tools

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

What it can access

From the extension's manifest, in plain language

Every websiteIt can read and change your data on all the sites you visit.
Sites
  • <all_urls>Every website
Sites where it runs scripts
  • *://*/*Every website
  • <all_urls>Every website
Browser features
  • contextMenusAdd items to the right-click menu
  • notificationsShow notifications
  • scriptingRun scripts on sites it can reach
  • storageSave settings and data in your browser
  • tabsRead the addresses and titles of your tabs

More from this developer

Other extensions from the same publisher account

ExtensionUsersRatingRatingsCategory
Clear Cache Chrome10,000 4.8971 Tools
Image Resizer5,000 4.8228 Art & Design
Html2Email: HTML editor and Inserter for Gmail & Yahoo Mail4,000 5.0036 Communication
Full Screen Tabs3,000 4.2847 Functionality & UI
Image Splitter3,000 4.9315 Art & Design
Html2Email: Send HTML emails from Yandex Mail & Mail.ru1,000 4.679 Communication
Shortcut Tab Switcher1,000 4.7117 Functionality & UI
Favorite Emojis Copy Popup467 4.508 Functionality & UI
Homepage Quick Access329 4.336 Tools
Blur Rabbit – Blur screen PII for privacy69 5.002 Privacy & Security
All 13 extensions by dreambuilder.first →

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 27 Sep 2026, 05:31 UTC; next check around 29 Sep 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “WEBM to MP4 converter: WebCodecs and FFmpeg support” (mfjlolbldcokknaeaaphebndgeicolfm). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/mfjlolbldcokknaeaaphebndgeicolfm. Accessed 2026-09-28.
BibTeX
@misc{extensiontracker_mfjlolbldcokknaeaaphebndgeicolfm,
  title   = {WEBM to MP4 converter: WebCodecs and FFmpeg support (mfjlolbldcokknaeaaphebndgeicolfm)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/mfjlolbldcokknaeaaphebndgeicolfm},
  urldate = {2026-09-28}
}

The data is free to reuse under CC BY 4.0.

Browse

Top lists

Productivity

Lifestyle

Make Chrome Yours