Anyfile is in beta, so a few things may not work perfectly yet. Tell us what you find
Free converter
Anyfile converts a WebM video to a Matroska video for free, right in your browser: the file is never uploaded.
Files are converted in your browser and never uploaded. By using Anyfile you agree to the Terms of Use.
| Picture | Copied as it is when it fits; otherwise re-encoded by your browser at the same size and frame rate |
|---|---|
| Sound | The first sound track is kept |
| Subtitles and chapters | Not carried over yet |
| File size | Usually larger: MKV compresses less tightly than WEBM |
When to use MKV: Films and series with several audio languages and subtitle tracks.
Open the file in the video editor to choose before downloading:
.webm
An open, royalty-free video format launched by Google in 2010. Based on Matroska, it carries VP8, VP9 or AV1 video with Vorbis or Opus audio.
Video embedded in web pages, and screen recordings made in the browser.
Opens in Chrome, Firefox, Edge, Safari, VLC
About WEBM files.mkv
An open container first released in 2002 and named after Russian nesting dolls. It holds any number of video, audio and subtitle tracks, plus chapters and attachments such as fonts.
Films and series with several audio languages and subtitle tracks.
Opens in VLC, mpv, IINA, Plex, Windows Media Player on Windows 10 and later
About MKV filesGoing the other way? Convert MKV to WEBM
Everything that converts to MKV
Need to change it first? Open the video editor
Drop your WEBM file on this page, or choose it. Anyfile converts it on your device in a moment and the MKV downloads straight away. To change it first, open it in the video editor.
No. The file is read and converted by your own browser, and nothing is sent to a server. You can check: open your browser’s developer tools, go to Network, and convert a file. No upload appears.
Yes. Drop them together and you get one ZIP with every MKV inside.