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Compress Video Online – Make Any Video File Smaller

Shrink phone recordings and screen captures so they fit email, chat apps and upload limits. The video is compressed on your own device and is never uploaded.

How to compress a video

  1. Add your video. Drag it onto the box above or tap to choose a file. MP4, MOV, M4V, WebM and MKV all work.
  2. Choose how to compress. Keep Quality preset and pick Smaller file, Balanced or Better quality – or switch to Target size and type the size you need in MB.
  3. Press Compress video. The first time, the video converter downloads once (about 31 MB). A progress bar then follows the compression, and you can press Cancel at any point.
  4. Check and download. Watch the result on the page, compare the size before and after, then download the MP4.

Features

  • Three honest presets. Smaller file (up to 480p), Balanced (up to 720p) and Better quality (up to 1080p), each using constant-quality H.264 encoding so simple scenes stay small and busy scenes stay watchable.
  • Target size mode. Type a size in MB and the tool calculates the bitrate from your video's length, choosing a lower resolution automatically when the budget is small.
  • Portrait videos handled correctly. The limit applies to the short side of the picture, so a vertical phone video becomes 480 or 720 pixels wide rather than being squeezed.
  • Before and after sizes with the percentage saved, plus a preview player so you can check the quality before saving.
  • Clear warnings. If the new file isn't smaller than the original, the tool says so instead of pretending otherwise.
  • Cancel at any time. Stopping frees the memory straight away.

Why use Fileora to compress video

Most online compressors make you upload the whole video first, wait in a queue and then download it again. With a phone recording of a few hundred megabytes that can take longer than the compression itself, and a copy of your video ends up on someone else's server. Fileora does the work on your device instead: your family clips, meeting recordings and screen captures stay private.

It is free, adds no watermark, needs no account and has no daily limit. It works in current versions of Chrome, Edge, Firefox and Safari on computers and phones.

Speed and quality: what to expect

We would rather be upfront: browser-based video compression is slow. Desktop apps use every core of your processor and often the graphics chip; this tool uses one processor core, because that version works on every website without special server settings. In our tests a 10-second 1080p clip took about 15 seconds with Smaller file, 30 seconds with Balanced and about 45 seconds with Better quality on a laptop. Phones are slower. For long videos, start with Smaller file or Balanced, keep the tab open while it works, and plug in your laptop.

Resolution matters more than anything else for file size. Most people watch shared videos on a phone, where 720p looks just as good as 4K, so Balanced is the best starting point. If you only need part of a recording, trim the video first – a shorter clip compresses faster and ends up smaller. Sound adds only a little to the size, but if you don't need it at all, you can remove the sound without re-encoding. Need just the audio? Use the MP4 to MP3 converter instead.

Frequently asked questions

How much smaller will my video get?

It depends on the original. A 1080p or 4K recording straight from a phone usually shrinks a lot, often to a fifth of its size or less with the Balanced preset, because phones record at a very high bitrate. A video that was already compressed for the web may barely change. If the result isn't smaller, the tool tells you so, and you can keep the original.

Why does compressing take so long?

Compressing means decoding every frame and encoding it again, which is heavy work. Here it runs on a single processor core inside your browser, so it is much slower than desktop software. As a rough guide, a 1-minute 1080p clip takes a few minutes on a fast computer and longer on a phone. The Smaller file preset is the quickest, Better quality the slowest.

What does the target size option do?

You enter the size you need in MB, for example to stay under an email attachment limit. The tool reads the length of your video, works out the average bitrate that fits, and lowers the resolution when the budget is tight. The result normally lands a little under the target. If the target is impossible for the video's length, you get the smallest size that would still work.

Is my video uploaded to a server?

No. The compression runs in your browser with a WebAssembly build of FFmpeg. Your file is read from your device, processed in memory and handed back to you as a download. Nothing is sent to our servers, which is also why there is no upload wait.

Which formats can I compress?

You can add MP4, MOV (including iPhone videos), M4V, WebM and MKV files. The compressed video is always saved as MP4 with H.264 video and AAC sound, the combination that plays on practically every phone, computer, TV and website.

Will the video lose quality?

Some, yes – compression always throws information away. Better quality keeps up to 1080p and loses little that you would notice on a phone. Balanced keeps up to 720p, which still looks sharp on small screens. Smaller file drops to 480p, so fine detail and small text become soft. The tool never enlarges a video that is already smaller than the preset.

Is there a file size limit?

There is no fixed limit, but the whole video has to fit in your browser's memory. Files over 100 MB may fail on phones or older computers. If that happens, trim the video first or use a computer with more memory.

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