მთავარი მიღებული
- 01Converts between MP4, WebM, MOV, and MKV — all four major formats in one place.
- 02Processing runs locally via FFmpeg WebAssembly — nothing is ever uploaded.
- 03A quality slider lets you control the trade-off between file size and visual fidelity.
- 04Supports files up to 1 GB with no account or sign-up required.
When and Why You Need to Change a Video Format
Different devices, platforms, and workflows each favor different video containers. MP4 (H.264) is the universal default — it plays on every phone, TV, browser, and editing app. WebM (VP9) is optimized for web delivery and produces smaller files for the same visual quality. MOV is Apple's QuickTime container, preferred by Final Cut Pro, iMovie, and Keynote. MKV (Matroska) is the open archiving standard, common on media servers like Plex and Kodi.
The wrong format causes silent failures: a video that won't import into your editor, a clip that plays fine on your Mac but not on your colleague's Windows machine, or an upload that a social platform quietly rejects. Converting takes a few minutes but eliminates all of that. Handytool's all-format converter handles every combination without any upload, account, or server dependency.
How to Convert a Video File
The process is the same regardless of which format you're converting to.
- 01
Open your video file
Drag your video onto the upload area or click Choose file. MP4, WebM, MOV, and MKV inputs are all accepted. The file loads locally — nothing leaves your device.
- 02
Choose an output format
Use the 'To' dropdown to pick MP4, WebM, MOV, or MKV. Only formats that differ from your input are shown.
- 03
Set the quality
Drag the quality slider to your preferred setting. A value of 75 or above gives excellent visual results for most content; lower values produce smaller files at the cost of some sharpness.
- 04
Click Convert
FFmpeg WebAssembly re-encodes the video in your browser. Progress is shown on screen. Conversion time depends on your device CPU and the file length.
- 05
Download the result
Click the Download button when conversion is complete. The file saves directly to your device.
Supported Format Combinations
Any of these directions is supported in a single conversion:
- 01MP4 → WebM, MOV, MKV
- 02WebM → MP4, MOV, MKV
- 03MOV → MP4, WebM, MKV
- 04MKV → MP4, WebM, MOV
- 05Maximum file size: 1 GB
- 06Quality slider range: 1–100
A Converter That Respects Your Privacy
Most free online video converters upload your file to a cloud server, convert it remotely, and serve you a download link. That means your video — whatever it contains — passes through a third-party machine. Handytool takes a different approach: the converter runs entirely inside your browser tab using FFmpeg compiled to WebAssembly.
There is no server round-trip. Your file never leaves your device. No account is needed, nothing is logged, and you can run the tool offline once the page has loaded. For sensitive footage — family videos, client recordings, internal presentations — that's the only acceptable option.
Video Converter FAQ
How do I convert a video to a different format online for free?
Drop your video on the converter, select the target format from the dropdown, set quality, and click Convert. Download the file when it's done — no account required.
What is the difference between MP4, WebM, MOV, and MKV?
MP4 (H.264) is universally compatible. WebM (VP9) is optimized for web delivery with smaller file sizes. MOV is Apple's QuickTime container for macOS/iOS apps. MKV is an open archiving container with support for multiple audio tracks and subtitles.
Will converting change the video quality?
Yes — format conversion requires re-encoding, which involves a small quality trade-off. Using a quality setting of 75 or above produces results that are barely distinguishable from the source for typical content.
Is there a file size limit for the video converter?
The maximum supported file size is 1 GB. Because processing is local, very large files may take longer depending on your CPU.
Are my videos uploaded to a server?
No. The converter runs entirely inside your browser using FFmpeg WebAssembly. Your video files never leave your device and nothing is stored or logged.