Lower file size
Lower video file size without uploading it.
Use local browser compression to lower a video's file size for sharing, forms, chat apps, or email workflows.
Lower video file size
Create a smaller MP4 with simple compression settings.
Your selected video is processed in this browser tab. It is not uploaded to a conversion server.
Ready.
Lower size, same basic workflow
Users search for lower file size, reduce size, shrink video, and compress video. The underlying workflow is the same: re-encode to a smaller MP4.
Best settings and limits
Best first try
Use 720p when quality matters. Use 480p when file size is the priority.
When this may fail
If lowering size is not enough, shorten the video first with the trim tool, then compress the shorter clip.
Privacy boundary
The selected video file stays on your device while the tool creates the output.
Frequently asked questions
Can I lower video file size online without upload?
Yes. The page is online, but the video file is processed locally.
What format do I get?
The output is an MP4 file.
What is the best way to lower size a lot?
Combine lower resolution with trimming. Duration often matters more than small quality changes.