How do I convert WebM to MP4?

Choose the WebM source file you want to convert.

Upload it to mp4.now, select MP4, and start conversion.

Download and review the result before sharing or archiving it.

Reasons to convert WebM to MP4 usually come down to compatibility, file-size, or specific feature requirements. Common situations:

• An app or platform only accepts MP4 uploads.
• You need a feature unique to MP4 (e.g. transparency, vector scaling, animation, multi-page pages, etc.) that WebM doesn't provide.
• You're optimising file size — modern formats often produce smaller files than the older format you started with.
• You need a single archival format across a project so files behave consistently in the same viewer.

1. Open the WebM → MP4 tool on mp4.now.
2. Drag your WebM file onto the drop zone, or click Select files. You can drop a whole folder of files at once.
3. The output is fixed to MP4. If the format supports extra options (page size, transparency background, quality, EXIF stripping), tweak them in the right-hand panel.
4. Click Convert. The job runs on our server and finishes in a few seconds for typical photos.
5. Download the result. Files stay in storage for 24 hours and are then permanently deleted.

The entire flow is free for the first 10 jobs per day with no signup required. A free account doubles that quota; a premium plan removes the limit entirely.

• Keep a copy of the original file.
• Use a valid, non-corrupted source file.
• Review the converted result before deleting the original.