Video Compressor

Shrink videos to any size — right in your browser. No upload.

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Connected — privacy mode available

You don't need the internet. Disconnect and watch the tool work.

Online

🔒 Verify the privacy claim yourself

Simplest way to confirm your videos never leave this device:

Disconnect from the internet.

Turn off your Wi-Fi → compression keeps working. The banner up top turns green.

Note: the compression engine (ffmpeg.wasm, ~30 MB) downloads once on first use, then runs entirely on your computer. After that first download, you can be fully offline.

or drop video(s) or a folder here

Supports MP4, MOV, WebM, MKV, AVI, 3GP

Loading compression engine (~30 MB) — first time only…

Why compress in the browser instead of uploading?

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Your video never leaves your computer

Compression runs in your browser via ffmpeg.wasm. Open the network tab — zero uploads. The other tools all send your video to their server first.

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No signup, no watermark, no size limit

Drop a 4 GB drone clip if you want. We don't care. No "upgrade to compress files bigger than 100 MB" garbage.

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Target the exact size you need

Discord 10 MB. Email 20 MB. WhatsApp 16 MB. Pick a preset — we calculate the right bitrate to land just under the cap.

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Faster than uploading

No upload wait. No queue. Compression starts the instant you drop the file.

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Works on your phone

Add to Home Screen — installs like an app. Compress those huge iPhone videos before texting them.

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Works offline after first visit

The engine downloads once, then runs forever. Turn off Wi-Fi to prove it.

How we compare

This tool Clideo FreeConvert VEED.io
Video stays on your computer✓ VerifiableUploads to serverUploads to serverUploads to server
Free tier file-size limitNone500 MB1 GB1 GB (then signup)
Signup requiredNeverYes for output >500 MBWatermark without accountWatermark on free
WatermarkNeverOn free tierOn free tierOn free tier
Works offline✓NoNoNo

Turn off your Wi-Fi. It still works.

That's how you know nothing leaves your computer.

Demo: Wi-Fi is turned off mid-session — the offline-verified banner appears, then a video is compressed and saved locally without any network connection.
Live demo — Wi-Fi disconnected, compression completes. No upload, no server, no network.

Clideo, FreeConvert, VEED, Adobe Express — they all send your video to a server. We don't. Compression runs on your CPU, in your browser, via the same ffmpeg engine VLC and YouTube use.

Try it yourself ↑