Video Converter and Compressor
Haikit converts video between MP4, MOV, MKV, WebM, AVI and GIF, and makes large videos smaller by lowering the resolution and quality. The work happens in your browser, so your videos are never uploaded.
Drop a video here
MP4, MOV, MKV, WebM, AVI and more. Files up to 50 MB.
You can also paste with Ctrl+V.
Your files are converted on your device and are never uploaded.
How it works
- 1
Add your video.
- 2
Choose the format, then the quality and resolution. Small file and 720p give the biggest savings.
- 3
Click Convert and download the result. Longer videos take longer because your device does the work.
What is free and what is paid
Free, no sign-up
- Convert one video at a time to MP4, MOV, MKV, WebM, AVI or GIF
- Choose the resolution and quality
- Make a video smaller
- Files up to 50 MB
Questions
Which video formats can Haikit convert?
It reads most common video files, including MP4, MOV, MKV, WebM, AVI, M4V, 3GP and WMV, and saves as MP4, MOV, MKV, WebM, AVI or GIF.
How long does a conversion take?
It depends on the length and resolution of the video and the speed of your device, because the conversion runs on your computer or phone rather than on a server. Short clips take seconds to minutes, and long, high-resolution videos can take much longer.
How can I make a video file smaller?
Choose MP4, set Quality to Small file and Resolution to 720p or 480p. These two settings usually reduce the size the most.
What are the free limits?
Free: one video at a time, up to 50 MB. Paid plans convert up to 10 videos at once and handle files up to 300 MB.
Updated October 2026