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WEBM to MP4 converter: WebCodecs and FFmpeg support

Chrome extension by dreambuilder.first · Productivity · Tools

  • Featured
  • Established publisher

A Chrome extension in Productivity · Tools with 4 000 users, a small but real audience.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 2 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
4 000
Rating
4.3 (21 ratings)
Users, last 10 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
1.4.0
Updated in the store
2025-12-04
Published
2024-09-30
Manifest
V3
Browser access
5 permissions, 1 site pattern

How it has moved

Users
unchanged since 01.09
4k · 2 readings
  1. 2026-09-014k
  2. 2026-09-104k
Rating
unchanged since 01.09
reviewsrating 4.29 · 2 readings
  1. 2026-09-01reviews21rating4.29
  2. 2026-09-10reviews21rating4.29
Users
unchanged since 01.09
4k · 2 readings
  1. 2026-09-014k
  2. 2026-09-104k
Rating
unchanged since 01.09
reviewsrating 4.29 · 2 readings
  1. 2026-09-01reviews21rating4.29
  2. 2026-09-10reviews21rating4.29

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

  • See the address and title of every tab you have open tabs
  • Run its own code on the pages it can access scripting
  • Add items to the right-click menu contextMenus
Show the remaining 2
  • Show you notifications notifications
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

dreambuilder.first publishes 13 listings we track, 31k users between them.

  1. Clear Cache Chrome dreambuilder.first · Productivity · Tools · published 2024-06-05 10k users ★ 4.9
  2. Image Resizer dreambuilder.first · Lifestyle · Art · published 2024-10-11 5k users ★ 4.8
  3. Html2Email: HTML editor and Inserter for Gmail & Yahoo Mail dreambuilder.first · Productivity · Communication · published 2025-10-21 4k users ★ 5.0
Show 5 more from this publisher
  1. Full Screen Tabs dreambuilder.first · Make Chrome Yours · Functionality · published 2025-03-31 3k users ★ 4.3
  2. Image Splitter dreambuilder.first · Lifestyle · Art · published 2024-10-19 2k users ★ 4.9
  3. Html2Email: Send HTML emails from Yandex Mail & Mail.ru dreambuilder.first · Productivity · Communication · published 2025-09-30 1k users ★ 4.7
  4. Shortcut Tab Switcher dreambuilder.first · Make Chrome Yours · Functionality · published 2024-08-03 1k users ★ 4.7
  5. Favorite Emojis Copy Popup dreambuilder.first · Make Chrome Yours · Functionality · published 2024-12-07 465 users ★ 4.4

Like this one

Listings the catalog judges closest in what they say they do.

  1. WEBM to MP4 Describes nearly the same job, smaller audience 4k users ★ 4.7
  2. kaimdt Converter – Enhanced Describes nearly the same job, smaller audience 5 users
  3. Video Converter Describes nearly the same job, smaller audience 862 users ★ 3.0
  4. Video to MP4 Describes nearly the same job, smaller audience 976 users ★ 5.0
  5. All Video Converter Describes nearly the same job, smaller audience 82 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.