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§ · free tool

Video compressor. Your footage never leaves.

Shrink MP4, WebM and MOV files with quality presets, resolution and frame-rate caps and optional mute, compressed on your own device. Nothing is uploaded; the engine runs entirely in your browser after a one-time download.

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A free online tool by Digital Heroes

Heads up: your first compression downloads a one-time video engine (about 25 MB) from a public CDN. After that it runs entirely on your device. The video itself is never uploaded.

Drop a video here

or click to browse, MP4, WebM, MOV, MKV, AVI & more

Your video never leaves your browser.

Why compress video in the browser?

Most “free” video compressors upload your footage to a server, slow, and your private clips end up on someone else’s machine. This tool runs a WebAssembly build of FFmpeg directly in your browser, so the whole job happens locally and the file never leaves your device. The trade-off is speed: a server farm is faster than your laptop, so long videos take a while. For big batches or very large files (300 MB+, especially on Safari), a desktop app is still the better tool, this one is for quick, private, no-install jobs.

§ 02 · what you can do

Everything a compressor should do.

Compress MP4, WebM, MOV & moreDrop almost any common video container and shrink it, nothing is ever uploaded.
Three quality presetsPick High quality, Balanced or Strong (CRF 23 / 28 / 33) to trade size against fidelity.
Cap the resolutionDownscale to 1080p, 720p or 480p to cut file size dramatically on phone footage.
Limit the frame rateCap at 30 or 24 fps, perfect for shrinking 60 fps screen recordings.
Mute the audioRemove the audio track entirely with one checkbox, or keep it as AAC 128 kbps.
Web-ready MP4 outDownload an H.264 MP4 with fast-start enabled, so it streams instantly on the web.
§ 03 · how to use it

Five steps, no signup.

  1. Drag a video onto the drop zone, or click it to browse for an MP4, WebM, MOV, MKV or AVI. It never leaves your device.
  2. Pick a compression strength, High quality, Balanced or Strong.
  3. Optionally cap the resolution and frame rate, or tick Mute to drop the audio.
  4. Click Compress video and wait. The first run downloads a one-time engine; longer videos take a few minutes.
  5. Download the MP4. The original filename is preserved with a -compressed suffix.
§ 04 · faq

Frequently asked questions.

Is the Video Compressor free?
Yes, completely free for everyone. No sign-up, no account, no watermark and no usage limits.
Is it private? Is my video uploaded anywhere?
No upload, ever. The compressor runs entirely in your browser on your own device, your video never leaves your computer and nothing is sent to a server.
Why does the first run take a moment?
The first time you compress a video, your browser downloads a one-time engine of about 25 MB (a WebAssembly build of FFmpeg). It is cached afterwards, so later runs skip the download and can work offline.
Why is compression slower than an online converter?
Because the encoding happens on your device instead of on a server farm. That is the trade-off for privacy, expect roughly 0.3-1× video speed, so a 2-minute clip may take 2-6 minutes depending on your hardware.
What formats can I use, and what do I get back?
You can drop MP4, WebM, MOV, MKV, AVI and most other common containers. The result is always a web-ready MP4 (H.264) with fast-start enabled. Some exotic codecs may not decode, if so, convert to MP4 first.
What is the largest file I can compress?
The engine runs in WebAssembly with a roughly 2 GB memory ceiling, and Safari is stricter. Files over 300 MB may work but can crash the tab, for very large videos, use a shorter clip or a desktop app instead.

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