Compress Video Online
Reduce video file size in your browser — free, private, no upload.
or drop files here
Maximum file size: 500MB per file
Browser-Native Format Support
MP4 and WebM offer the most reliable browser-side compression. Some browsers can also open MOV, while other formats depend on local codec support.
Best supported input: MP4, WebM, MOV
Supported output: MP4, WebM
Some browsers may not decode AVI, MKV, FLV, or older codecs.
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About Video Compression
Large videos are hard to share: email caps attachments at 25MB, chat apps and platforms enforce their own limits, and big files take forever to upload. This tool re-encodes your video in your browser with modern codecs, balancing quality and file size. Because everything happens locally, your videos never leave your device.Before emailing a PDF, open the downloaded copy and check fine text at the intended viewing size. The tool can reduce image detail; its target size is not guaranteed. If forms, signatures or searchable text matter, keep the original PDF.
How to Compress a Video
Add your video
Select one or more videos from your device. MP4 and WebM compress most reliably; MOV and other formats depend on browser codec support.
Pick a size or quality
Choose a size limit profile like 8MB or 25MB, or enter a custom target — the best bitrate is calculated automatically.
Download the result
Compression runs entirely in your browser. Download the smaller video when processing finishes.
Frequently Asked Questions
Is this video compressor really free?
Yes. There are no limits, queues or sign-ups — compression runs on your own device, so it costs nothing to run.
Are my videos uploaded to a server?
No. All processing happens locally in your browser. Your files never leave your device.
Which video formats can I compress?
MP4 and WebM work best. MOV is supported in most browsers, while AVI, MKV and other formats depend on your system codecs.
How much smaller will my video get?
It depends on the source, but typical videos shrink by 50–90% while staying perfectly watchable when a target size is set.
Is there a maximum file size limit for compression?
There is no fixed limit since processing happens on your own device, but browser memory typically caps videos at around 2GB. Files between 500MB and 1GB usually compress smoothly on a modern computer with 8GB of RAM or more.
Will compressing a video lower its quality?
Slight quality loss is normal when re-encoding. The tool uses H.264 or H.265 encoding at balanced bitrates, so most viewers notice little difference at 720p or 1080p. Pick a lower resolution only if you need the smallest possible file.
How do I make a video smaller than 25MB for email?
Compress until the output size shows under 25MB, usually by lowering the resolution to 720p or 480p. A one-minute 480p video typically comes in around 10 to 20MB, which fits comfortably within the attachment limits for Gmail, Outlook and Yahoo.
Can I compress videos on my phone?
Yes. The tool runs in any modern mobile browser, including Chrome on Android and Safari on iOS. Compression speed depends on your processor, so expect a one-minute video to take roughly 30 seconds to 2 minutes on a recent phone.
Compress video
Re-encode with a lower bitrate or resolution. Check playback, sound and the final size; a strict target may need further adjustments.
There is no guaranteed saving or exact target for every file. If the result is larger, some tools return the original; compare its format and size before sharing. Before emailing a PDF, open the downloaded copy and check fine text at the intended viewing size. The tool can reduce image detail; its target size is not guaranteed. If forms, signatures or searchable text matter, keep the original PDF.
References & Resources
Authoritative specifications and references for the file formats this tool works with.