Compress Video Online
Reduce video file size for uploads, email, websites, and social sharing. Supports MP4, MOV, WebM and AVI up to 200MB. Output is H.264 MP4.
Click to upload or drag and drop
MP4, MOV, WEBM, AVI — max 200MB
This compress video helps you reduce file size for uploads, email attachments, web performance, and storage limits. It supports JPG, PNG, WebP images and MP4, MOV, WebM, AVI video files and is ideal for compress videos for email attachments and upload limits, shrink screen recordings and lectures for sharing and reduce storage size before archiving.
Unlike other tools, ConvertWiki focuses on speed, simplicity, and privacy. Your files are processed quickly and are not stored on any server.
You can use this tool for:
- Compress videos for email attachments and upload limits
- Shrink screen recordings and lectures for sharing
- Reduce storage size before archiving
How to use this tool:
- Upload your file or paste your content into the tool.
- The tool will automatically process it.
- Download the result instantly — no account required.
Why use ConvertWiki?
How video compression works
Video compression reduces file size by re-encoding the video at a lower bitrate using the H.264 codec. You control quality with the CRF slider — lower values preserve more detail, higher values produce smaller files.
You can also downscale resolution (e.g. from 4K to 1080p or 720p) to reduce file size significantly without visible quality loss at normal viewing sizes.
Common uses
- Compress videos for email attachments and upload limits.
- Shrink screen recordings and lectures for sharing.
- Reduce storage size before archiving.
Frequently Asked Questions
MP4, MOV, WebM and AVI up to 200MB. The output is always MP4 (H.264).
Some quality loss is expected. Use a lower CRF (closer to "High quality") to minimize it.
Typically 30 seconds to 3 minutes depending on file size and server load.
CRF (Constant Rate Factor) controls quality vs file size. The default balanced setting works well for most videos.
Yes, it is completely free with no signup required.