Compress WebM Online
Reduce the file size of WebM videos. Upload your WebM file and get a compressed MP4 — smaller and compatible with every device and platform.
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. Your files are processed quickly and are not stored on any server.
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-based capture tools, and web apps. While efficient for streaming, WebM files from recordings can still be large and are not natively supported on all devices.
Compressing and converting WebM to MP4 (H.264) gives you a smaller file that plays everywhere — on iPhone, Windows, smart TVs, and all social 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 is more universally compatible. WebM is not supported on iPhone or many older devices.
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.