VidCompress / WMV compression
WMV files are bulky and only play cleanly on Windows. Compress one and convert it to MP4 for a far smaller file that plays on every device.
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WMV is an older Windows format. The files are often bulky, and they only play cleanly on Windows — phones, Macs, and many web players struggle with them. So a WMV is usually both too big and too incompatible to share easily.
This page shrinks the WMV and converts it to MP4 in one step, giving you a far smaller file that plays everywhere. Files under 300 MB are processed locally in your browser.
Add the WMV
Drag in your WMV file. There is no need to convert it first — VidCompress handles it.
Pick a target size
Choose a preset or a custom target depending on where the file needs to go.
Compress and convert
VidCompress re-encodes the WMV to a smaller H.264 MP4 in a single pass.
Download the MP4
Get a compact file that plays on phones, browsers, and every modern device.
Does it convert WMV to MP4?
Yes. The output is H.264 MP4, which plays everywhere — unlike WMV, which is mostly Windows-only.
Why are WMV files so large?
WMV is an older codec and is often exported at high bitrates. Re-encoding to modern H.264 MP4 shrinks the file substantially.
Will it play on my iPhone or Mac?
Yes. After conversion to MP4 it plays natively on iPhone, Mac, Android, and in browsers.
Do I need to install anything?
No. It runs in your browser; files under 300 MB stay on your device.
Is it free?
Yes. The free plan compresses up to 300 MB locally with no watermark.