Compress WebM Online
Reduce the file size of WebM videos. Upload your WebM file and get a compressed MP4 accepted by more devices, apps, and platforms.
Click to upload or drag and drop
WEBM — max 200MB
This compress webm 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 chrome screen recordings and loom exports, browser-based video capture tools and downloads from web apps that export webm.
Unlike other tools, ConvertWiki focuses on speed, simplicity, and privacy. Uploaded files are used only for the requested action and are removed after processing.
You can use this tool for:
- Chrome screen recordings and Loom exports
- Browser-based video capture tools
- Downloads from web apps that export WebM
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?
WebM compression and format conversion
WebM is an open video format used by Chrome screen recorders, browser capture tools, and web apps. Recorded files can still be large, and support varies by codec, device, and application.
Compressing and converting WebM to MP4 with H.264 produces a smaller file that is accepted by a broader range of players and upload platforms.
Common WebM sources
- Chrome screen recordings and Loom exports.
- Browser-based video capture tools.
- Downloads from web apps that export WebM.
Frequently Asked Questions
MP4 with H.264 and AAC is accepted by more editors, devices, and upload forms than many WebM codec combinations.
Some re-encoding quality loss is unavoidable. Use "High quality" CRF setting to minimize it.
Up to 200MB per file.
Yes. WebM screen recordings from Chrome, Loom, and similar tools are fully supported.
Yes, it is completely free with no signup required.