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ToolsStore Featured

WEBM to MP4 converter: WebCodecs and FFmpeg support

By dreambuilder.first

🎬 Convert WEBM to MP4 instantly and securely. No server uploads, unlimited file conversions, works locally in your browser.

View Chrome Web Store
PublishedPlus membersSee all with Plus · $19/mo
Store users4KAs shown on the Chrome Web Store
Store rating4.3 / 521 ratings
Last store update4 Dec 2025Version 1.4.0, 10 months ago

Inside the extension

WEBM to MP4 converter: WebCodecs and FFmpeg support developer product preview 1
Product image 1 of 2

See our verdict on WEBM to MP4 converter: WebCodecs and FFmpeg support

Whether it is worth competing with, the reasons behind it and what to watch.

See all with Plus · $19/mo

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Audience & ratings

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Users and ratings over time, growth in the last 30/90/365 days.

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Release history

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See all with Plus · $19/mo

Competitors

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Permissions & access

Access levelHigh

Can read and change every website you visit.

What it’s allowed to do, not what it actually does. Not a safety rating.

Permissions 6

Sensitive2

  • Read and change data on every website<all_urls>
  • See the address and title of every open tabtabs

Standard4

  • Run its code on pages it can accessscripting
  • Show desktop notificationsnotifications
  • Save its own settingsstorage
  • Add items to the right-click menucontextMenus

Members also see when a new version asks for new access.

Website access All

  • All websites
Extension ID
mfjlolbldcokknaeaaphebndgeicolfm
Package size
10.07MiB
Manifest
Version 3

The maker

dreambuilder.first has 13 listings on the store. Updates now and then.

Listings
13
Combined store users
≈32K
Store Featured
10
Updated in the last 90 days
6 of 13

Combined users can count the same person more than once. See all 13 listings

Ext Watch AI

Should you build
in this niche?

One research report for WEBM to MP4 converter: WebCodecs and FFmpeg support: verdict, search demand, traffic, pricing, reviews, competitors and what to build. Every number shows its source and date. Anything we cannot verify is marked.

Verdict & demand

A cited takeaway, plus Google search volumes for the niche

Traffic & domain

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Money & pricing

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Reviews

Top complaints, praise and recent issues, quoted from real reviews

Competitors & ranks

Where it ranks against the closest listings

Build opportunity

What to build, what an MVP must fix, and how to position it

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