1080p usually fits
At a 100MB budget, most clips under 5 minutes fit at 1080p with a moderate bitrate. Longer videos may need 720p.
Target file size
Compress Video to 100MB
Many platforms, learning management systems and upload portals cap videos at 100MBLessMB reduces video file size locally in your browser
compress video to 100mbreduce video to 100mbvideo compressor 100mbcompress video below 100mb
Select a video, choose a preset or lower the bitrate, and check the output size.
Drop your file here, or
Compress and convert MP4, MOV, MKV, AVI, and more locally without installing software.
Files stay on your device
MP4 · MOV · WebM · MKV · AVI
No upload required100% free foreverWorks in your browser
Steps
Quick workflow
Use this simple browser workflow to get a smaller file while keeping the original on your device
- Select your video file.
- Choose MP4 output format.
- Pick a balanced preset or lower the bitrate.
- Keep 1080p or drop to 720p for longer clips.
- Compress and verify the output is under 100MB.
What to know before you start
Bitrate is key
Lowering bitrate has the biggest effect on file size. Start with a balanced preset and adjust down if needed.
Local browser processing
The video is compressed on your device. Course content and client work never leave your browser.
FAQ
Compress Video to 100MB FAQ
Short answers for the most common questions about this workflow and LessMB's local browser compression
No uploadFree toolBrowser-based
Can I compress a video to exactly 100MB?
File size depends on length, resolution and content. Adjust bitrate and resolution iteratively to approach the target.
What resolution should I use for 100MB?
1080p works for clips under 5 minutes. For longer videos, 720p helps stay within the limit at good quality.
Are videos uploaded?
No. LessMB compresses videos locally in your browser session.