MP4 to WebM Converter - Free Desktop App
Watch Demo Video - 30 secondsConvert MP4 to WebM offline. Reduce file size by 50%, perfect for web. Hardware accelerated batch conversion. Works on Mac & Windows.
Convert Your Videos
Optimized for web
Your MP4 videos will be converted to WebM format. WebM offers better compression for web use and is preferred by modern browsers for HTML5 video.
Note: Hardware acceleration makes video conversion 5-20x faster using your GPU.
Why Desktop WebM Converter Beats Online Tools
| Feature | Online Tools | Diwadi Desktop |
|---|---|---|
| Upload Required | ❌ Required | 🎯 Never |
| File Size Limit | ❌ 50MB max | ♾️ Unlimited |
| Speed | ⏳ Slow (upload/download) | ⚡ Instant |
| Batch Processing | ❌ 1 file | ✅ 1000s |
| Privacy | ⚠️ Risky (cloud upload) | 🔒 100% Local |
| AI Features | ❌ No | 🤖 Yes |
| Offline | ❌ No | ✅ Yes |
| Cost | Free | Free ✅ |
How It Works
Download & Install
Takes just 30 seconds. No account, no credit card required.
Browse & Select Your MP4 Videos
Navigate your files like a regular file browser. Batch processing supported.
Get WebM Videos (30-50% smaller) (Instant)
Processing happens locally on your computer. No upload wait.
Why Choose Diwadi Desktop?
Privacy First
Files never leave your computer. No cloud upload, no data collection, 100% local.
Lightning Fast
Process files 10x faster than online tools. No upload wait, no download wait.
No Limits
Convert unlimited files of any size. Batch process thousands in one click.
AI-Powered
Smart formatting detection, auto-cleanup, better accuracy.
Works Offline
No internet required. Perfect for flights, secure environments.
Free to Use
No trial limits, no watermarks, no credit card required.
Frequently Asked Questions
Why use WebM instead of MP4?
WebM offers 30-50% better compression than MP4 with H.264, resulting in smaller files at the same quality. For websites, this means faster page loads, reduced bandwidth costs, and better user experience. WebM uses modern codecs (VP9, AV1) that are optimized for web streaming. It's also royalty-free and open-source, making it ideal for web use.
Will WebM work in all browsers?
Yes, in all modern browsers. WebM is supported by Chrome, Firefox, Edge, Opera, and Safari (since 2020) - covering 95%+ of web users. For maximum compatibility, many developers serve both WebM and MP4 versions using the HTML5 video element with fallback sources. Diwadi can generate both formats simultaneously.
How much smaller are WebM files?
Typically 30-50% smaller than MP4 (H.264) at the same visual quality. A 10MB MP4 video often becomes a 5-7MB WebM file. With AV1 codec (next-gen), savings can reach 50-60%. For bandwidth-heavy websites (video streaming, tutorials, product demos), this translates to significant cost savings and better performance.
Can I batch convert folders?
Yes! Unlimited batch conversion. Select entire folders of MP4 videos and convert them all to WebM in one operation. Perfect for converting your entire website's video library. Diwadi processes multiple videos in parallel using hardware acceleration. Online tools typically limit batches to 2-5 videos.
Does it support 4K videos?
Absolutely! Diwadi handles 4K, 8K, and any resolution. WebM with VP9 or AV1 codec is actually more efficient for 4K content than MP4 with H.264. Hardware acceleration ensures fast conversion even for large 4K videos. No file size limits unlike online tools.
What codec should I use - VP8, VP9, or AV1?
VP9 is recommended for most use cases - excellent compression, wide browser support, hardware acceleration available. AV1 offers even better compression (50% smaller than H.264) but encoding is slower and not all hardware supports it yet. VP8 is older and less efficient - use VP9 or AV1 instead.
Does it use hardware acceleration?
Yes! Diwadi leverages GPU encoding when available (NVIDIA, Intel, AMD). Hardware acceleration makes VP9 encoding 5-10x faster. AV1 encoding benefits from GPU acceleration on newer graphics cards. For CPU-only encoding, Diwadi optimizes multi-core performance.
Can I convert WebM back to MP4?
Yes! Diwadi supports bidirectional conversion. Convert MP4 to WebM for web optimization, and convert WebM back to MP4 when you need better compatibility with video editing software or devices that don't support WebM yet.
What are common use cases for WebM?
Website video backgrounds, product demo videos, video tutorials, embedded video players, video streaming platforms, progressive web apps (PWAs), responsive video for mobile, reducing CDN bandwidth costs, improving Core Web Vitals scores for SEO, and any web-based video content where file size matters.
Is MP4 to WebM conversion free?
Completely free with unlimited conversions. No file size limits, no video length limits, no watermarks, no credit card required. Convert unlimited videos to WebM forever at no cost.
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Learn More
Understand video formats, compression, and how Diwadi compares to alternatives