100% private — processing happens on your device, nothing is uploaded.
Works best with short clips (Reels, TikTok, Stories). Very large files may be slow on mobile.
By using this tool, you agree to our Terms of Use
Shrink MP4 and other clips in the browser—ideal when uploads fail for being too large.
Lower bitrate with Light / Medium / Strong levels so messages and Discord uploads go through.
No cloud upload. Your video compressor runs locally—files never leave your device.
Search demand for video compressor and compress video online is huge because social apps and chat tools reject oversized files.
Unvidio reduces size on-device: pick a level, compress, download. Pair with our converter if you still need MP4 first.
Best for Reels, TikTok exports, screen recordings, and client drafts that must stay under a size cap.
Compress only files you own or may process. Everything runs on your device.
Select a local file. Start with Medium if you are unsure; try Strong if chat apps still reject it.
Light keeps more quality. Strong targets smaller size for WhatsApp, Discord, or email limits.
Click Compress, wait for progress, then download the smaller file. Nothing is uploaded.
Stronger compression lowers bitrate and may soften detail. For final client delivery, prefer Light or Medium. For chat apps, Strong is usually fine.
Private browser compression—Unvidio does not store your videos. Use files you own or may lawfully process.
Queries like video compressor, compress video online, and free video compressor usually mean one thing: make the file small enough to send or upload.
Cloud compressors re-upload every byte. That is slow on mobile data and unnecessary for short clips.
Unvidio’s free video compressor re-encodes locally so your draft never sits on a third-party disk.
Chat apps often cap uploads around tens of megabytes. If convert-to-MP4 was not enough, compress next.
For Discord especially, a slightly softer encode is better than a failed upload.
Converter changes format (MOV→MP4, video→MP3). Compressor keeps a video file but reduces size.
Workflow: convert to MP4 if needed, then compress if still too large.
FAQ
One that does not upload your file, offers clear compression levels, and outputs a playable MP4. Unvidio compresses in the browser.
Choose your file, pick Strong or Medium, compress, then send the smaller MP4. Repeat with Strong if WhatsApp still rejects it.
Yes. This video compressor for Discord helps when uploads are rejected for size—use Medium/Strong, then attach the smaller file.
No. Compression runs locally with FFmpeg.wasm. Nothing is sent to Unvidio servers.
Some detail may soften as bitrate drops. Use Light for quality-critical work; Strong when size matters most.
Depends on length, resolution, and level. Extremely long 4K files may need a desktop tool; short clips compress well here.
Format can be fine while bitrate/size is still too high for chat or email caps.
If the format is wrong, convert to MP4 first. If it is already MP4 but too big, compress.