Video Compressor

Shrink big video files right in your browser — no upload, no file-size cap, no watermark. Pick a quality and resolution and download a smaller MP4. Your footage is processed on your own device.

100% on-device compression. Your video is never uploaded to a server.

Drop a video here

or click to choose a file

MP4 · MOV · MKV · WebM · AVI · M4V · and more

About the Video Compressor

Video files are huge — a few minutes of phone footage can run hundreds of megabytes, too big to email, slow to upload, and quick to fill a drive. Most "free" online compressors make you upload that footage to their servers, sit in a queue, and accept a file-size cap or a watermark. This one is different: it compresses your video entirely inside your browser, so there's no upload, no size limit imposed by us, and nothing to wait in line for.

Under the hood it runs FFmpeg — the same engine professional video tools are built on — compiled to WebAssembly so it executes locally on your machine. Your video is read straight from disk into the page and never sent anywhere.

How to use it

What to expect

Why on-device matters

Footage is personal — family moments, client work, unreleased content. Uploading it to an unknown server to "compress for free" means handing over a copy you can't get back. Compressing locally keeps your video yours: it goes from your drive, through your browser, back to your drive.

No account, no upload, no watermark — drop it in, compress, download.

Common questions

How do I compress a video for email or messaging?

Drop the video in, pick a quality and resolution, and download the smaller MP4: phone videos routinely shrink from gigabytes to tens of megabytes, well under sending limits.

Why does this start instantly when other sites make me wait?

No upload: FFmpeg runs in your browser, so a 4 GB video starts compressing the moment you drop it instead of spending an hour reaching someone's server first.

How much quality do I lose compressing video?

At sensible settings, little that eyes notice on a phone or laptop: modern encoding spends bits where they matter. Keep resolution for detail-critical footage and drop it for casual sharing; the trade is yours to set.

Is there a file size limit or watermark?

Neither. Upload-based compressors cap sizes and stamp watermarks because your video costs them server money; here your machine does the work.

Is my video private during compression?

Completely: it never leaves your device, which matters for family footage and work recordings alike.

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