Matroska video
A flexible open container that can hold video, audio, and subtitles.
Best for high-quality media libraries and multi-track video.
MKV to WEBM
Converts MKV video to WEBM. WebM is designed for browser playback and plays in current major browsers. Add your files, convert them in one batch, and download each WEBM directly.
1-hour guest cleanupMalware scanned2 at once, 10 per day
How to convert MKV to WEBM
The converter runs in your browser and an isolated processing queue. Nothing to install, and every upload is scanned for malware before it is processed.
- 1Add your MKV filesDrop MKV files into the converter or choose them from your device. Guest files can be up to 15 MB each.
- 2Choose WEBMSet WEBM as the output for the whole batch, then change individual files if needed.
- 3Convert and downloadStart the batch and download each WEBM directly, or save it to your workspace to get a permanent link.
WebM video
An open media container designed for efficient browser playback.
Best for web video and open media pipelines.
MKV to WEBM
What to expect from MKV to WEBM
What changes in the file, and what to check before you share the result.
Why WEBM
WebM is designed for browser playback and plays in current major browsers. Some older devices and editing programs do not open it.
Guest size limit
Guest video conversions are limited to 15 MB per file. Sign in to a free account for larger videos.
Starting from MKV
MKV files can contain several audio and subtitle tracks alongside the video.
MKV to WEBM questions
Short answers about limits, privacy, and keeping the converted file.
What happens to extra audio and subtitle tracks?
MKV files can carry several tracks. The WEBM may include only the main video and audio, so check the result if you rely on alternate languages or subtitles.
Is the MKV to WEBM converter free?
Yes. Without an account you can convert up to 10 files a day, 2 at a time, up to 15 MB each. A free account adds monthly conversion credits and larger files.
How long are my files kept?
Guest uploads and results are deleted automatically after 1 hour. Conversions stay temporary when you are signed in too, unless you save a result to your workspace.
Can I get a permanent link to the WEBM file?
Yes. Save the result to a SteadyLink workspace and it gets a stable link. If you make a new version later, replace the file and the link stays the same.
Browse by file type
Each category has its own converter, format list, and common routes.
Images
JPG, PNG, WebP, AVIF, GIF, TIFF, BMP, HEIC, ICO, SVG
Documents
DOC, DOCX, ODT, RTF, TXT, HTML, PDF
Spreadsheets
XLS, XLSX, ODS, CSV, PDF
Presentations
PPT, PPTX, ODP, PDF
PDF, DOCX, JPG, PNG, TXT
Audio
MP3, WAV, AAC, FLAC, OGG, M4A, Opus
Video
MP4, WebM, MOV, AVI, MKV, GIF, MP3
Archives
ZIP, TAR, TAR.GZ, 7Z
Ebooks
EPUB, MOBI, AZW3, PDF, TXT
Keep the useful ones.
Conversions remain temporary even when you are signed in, so save a result to your workspace when you want a stable URL and revision history.
Open a workspacecampaign-hero.webpReady to download
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