Video Tools — Filecompress.app

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Drag & drop your video here

MP4, WebM, MOV, AVI, MKV supported

Browse files

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— → estimate

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Output format

Quality preset

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✓ Files stay on your device

✓ No upload, no server

✓ Works offline

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Drag & drop your video here

MP4, WebM, MOV supported

Browse files

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— → estimate

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Compression level — CRF 28 (balanced)

Less compressed More compressed

Output resolution

Output format

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About CRF (Constant Rate Factor)
CRF 18 = near-lossless quality. CRF 28 = good balance. CRF 40 = smallest file, visible quality loss. Default is 28.

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Drag & drop your video here

MP4, WebM, MOV — keep clip short for best results

Browse files

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— → GIF

Duration: —

Start time (seconds)

Duration (seconds)

Width (px) — height auto-scales

Frame rate (fps)

⚡ Tip: Keep duration under 10 seconds for smaller files. GIFs at 480px / 15fps are a great balance of size and quality.

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Video Tools — Frequently Asked Questions

The practical details behind converting, compressing and clipping video.

Yes. Converting, compressing and making GIFs all happen inside your browser, so your video stays on your own device and is never uploaded to a server. Nothing is stored and nothing is logged, and the file simply drops out of memory when you close the tab — so these tools give you a fully private option for everyday video work that never leaves your computer or phone.

You can convert between the common web and device formats, most notably MP4 and WebM, and you can turn a short clip into an animated GIF. MP4 is the safest all-round choice because virtually every phone, television and social platform plays it. WebM tends to be smaller and is well suited to websites. If you simply want something that will play anywhere without fuss, MP4 is almost always the right answer.

Open the Compressor and choose how much you want to reduce the file. The tool lowers the bitrate — the amount of data used for each second of footage — which is the single biggest lever on file size. A higher compression setting gives you a smaller file that is easier to email or upload, while a gentler setting keeps more detail. The preview helps you judge how far you can push it before the quality drop becomes noticeable.

The GIF Maker takes a section of video and turns it into a looping animation. GIFs are perfect for short, silent moments — a reaction, a quick demo, a highlight — that you want to drop into a chat or a web page where they play automatically. Bear in mind that GIFs are not an efficient format for long clips, so keeping the selection short will give you a smaller, smoother result.

Video is simply heavy work. Every second contains many full frames, and re-encoding all of them takes real computing effort, especially for longer or higher-resolution clips. Because the in-browser tools use your own device’s processor, the speed depends on your hardware. A short clip finishes quickly; a long, high-definition recording naturally takes longer. Leaving the tab open and in focus while it works will help it finish as fast as your device allows.

Converting between formats at a sensible setting keeps the picture looking very close to the original. Compression is a deliberate trade between size and quality, so the harder you compress, the more detail you give up. The good news is that a lot of footage — particularly screen recordings and talking-head video — compresses extremely well, letting you cut the file size a long way before anyone would notice on a phone or laptop screen.

Yes. When you make a GIF the audio is dropped automatically, because the GIF format has no sound. For ordinary conversion and compression the soundtrack is preserved so your video still plays with audio. If you specifically want a silent file, making a GIF or muting the source before processing are the simplest routes.

There is no hard limit set by the site, but video is memory-hungry, so very large files can strain a browser — particularly on phones or older machines. If a big file struggles, trimming it to the part you actually need first, or compressing in one step rather than several, usually solves it. On a reasonably modern computer the everyday clips most people work with are no trouble at all.