# Compress Video to a Specific Size Online - 8MB, 10MB, 25MB for Discord & Email

> Free online video compressor with an exact size target: pick 8, 10, 25, 50 or 100 MB, get the bitrate from the duration and encode two-pass x264 to hit it.

- URL: https://qilingtools.com/en/video/compress-to-size
- 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: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Discord caps free uploads at 10 MB, email attachments are usually limited to 25 MB, and many forms and sites have their own limits. A regular compressor only makes a video "somewhat" smaller; this one targets the size you need. Choose 8 / 10 / 25 / 50 / 100 MB or enter your own, and the tool divides the target by the duration to get the total bitrate, subtracts audio and about 4% container overhead for the video bitrate, and shows the budget and output resolution live. When the bitrate is too low for the resolution it recommends 720p, 480p and so on to avoid blocky video; you can also set resolution, frame rate and audio bitrate yourself, or drop the audio to give every bit to the picture. Two-pass x264 is used by default — the first pass measures scene complexity, the second spends the budget precisely — and if the file still comes out over the target, it is re-encoded once at a lower bitrate. You get a clear target-vs-actual size report at the end.

## How to use

1. Upload a video and choose a target size (8 / 10 / 25 / 50 / 100 MB or custom)
2. Check the calculated bitrate and suggested resolution; adjust audio bitrate, resolution, frame rate or encoding mode if needed
3. Click Compress to size, then check the actual size and download the MP4

## Features

- Presets for 8 / 10 / 25 / 50 / 100 MB plus custom sizes
- Video and audio bitrate calculated from the duration, shown live
- Resolution suggestions when the bitrate is too low
- Two-pass x264 for accurate size and better quality
- Automatic lower-bitrate retry if the result is over
- Adjustable audio bitrate, resolution and frame rate, or no audio
- Standard H.264 + AAC MP4 output

## FAQ

### Why is the result a bit smaller than the target?

To make sure it never goes over, about 4% is reserved for container overhead and 1 MB is counted as 1,000,000 bytes (smaller than the MiB your OS may show), so results usually land at 90–99% of the target. Very simple footage such as screen recordings may not need the whole budget and comes out smaller still — that is normal.

### The target is small and the video looks blurry — what can I do?

Bitrate is size divided by duration, so longer videos get less data per second. Trim unneeded parts first, lower the resolution (480p, 360p) or frame rate (24 or 15 fps), or remove the audio — all of these look far better than squeezing a high resolution into too few bits.

### 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

- [Compress Video](https://qilingtools.com/en/video/compress): Free online video compressor: shrink MP4, MOV and other formats with H.264 encoding and resolution scaling, at the strength you pick. Processed locally.
- [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.