# Compress Video - Reduce Video File Size Online

> Free online video compressor: shrink MP4, MOV and other formats with H.264 encoding and resolution scaling, at the strength you pick. Processed locally.

- URL: https://qilingtools.com/en/video/compress
- Category: Video Tools (https://qilingtools.com/en/video)
- Tags: [Video](https://qilingtools.com/en/tags/video), [Compression](https://qilingtools.com/en/tags/compress)
- Last updated: 2026-10-29
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Make phone videos and screen recordings smaller for messaging, uploading or saving space. Choose the compression strength and output resolution; output is universal MP4 (H.264 + AAC).

## How to use

1. Upload a video file
2. Choose the compression level and resolution (e.g. 720p)
3. Click start and download the MP4 when finished

## Features

- H.264 encoding, plays everywhere
- Adjustable compression level
- Optional downscaling for smaller files
- FFmpeg runs locally

## FAQ

### How long does compression take?

FFmpeg runs single-threaded in the browser at roughly 0.3x to 1x real time. One minute of 1080p video takes about 1 to 3 minutes.

### How large a video can I process?

Browser memory limits apply; keep single files under about 1 GB. Trim larger videos into segments first.

### Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

## Related tools

- [Convert Video](https://qilingtools.com/en/video/convert): Free online video converter: convert MOV, MKV, AVI, FLV, WebM and more to MP4 or WebM. Powered by FFmpeg, processed locally, no upload.
- [Trim Video](https://qilingtools.com/en/video/trim): Free online video trimmer: set start and end times to cut a clip; fast mode finishes in seconds without re-encoding. Processed locally, no upload.
- [Video to GIF](https://qilingtools.com/en/video/to-gif): Free online video to GIF converter: cut a clip and create a high-quality animated GIF with adjustable frame rate and width. Processed locally, no upload.
- [Extract Audio](https://qilingtools.com/en/video/extract-audio): Free online tool to extract audio from MP4, MOV and other videos as MP3, M4A or WAV. Processed locally, no upload.
- [Video Screenshot](https://qilingtools.com/en/video/screenshot): Free online video frame grabber: enter a timestamp and save that frame as a full-resolution PNG or JPG. Processed locally, no upload.
- [Mute Video](https://qilingtools.com/en/video/mute): Free online video muter: remove the audio track from a video in one click without re-encoding the picture. Finishes in seconds, processed locally, no upload.
- [Merge Videos](https://qilingtools.com/en/video/merge): Free online video joiner: combine several MP4, MOV or MKV clips into one file, even when their resolution and frame rate differ. Processed locally.
- [Change Video Speed](https://qilingtools.com/en/video/speed): Free online video speed changer: slow a clip to 0.25x or speed it up to 4x. The audio follows along with its pitch preserved. Processed locally, no upload.