WebM to MP4 is the go-to conversion when you need maximum playback compatibility. MP4 works in more apps, more devices, and more editing tools than WebM.
Use this when clients, messaging platforms, or older software rejects WebM. If your goal is a smaller web-first format, consider staying in WebM or converting MP4 to WebM.
Best for
- Universal sharing and playback across devices
- Editing workflows that prefer MP4
- Client deliverables where MP4 is required
FFmpeg runs locally in your browser via WebAssembly. Your file stays private.
Why use Client Tools?
- Privacy-First & Secure: All processing happens directly in your browser. We never upload your files to any server.
- Corporate Grade Security: Ideal for handling sensitive documents, contracts, and NDA-protected images. Since data never leaves your device, it is impossible for third parties to intercept it.
- No Limits: Convert as many files as you want, of any size (limited only by your device's RAM).
- Fast & Offline Capable: Works instantly without waiting for network uploads.
How it works
Unlike other converters that require you to upload your files to a cloud server (which creates a privacy risk), Client Tools uses advanced WebAssembly technology to run professional image processing software directly inside your web browser.