Is it free to convert MP4 to WebM?

Yes, VideoConvert offers free MP4 to WebM conversion. The free tier supports MP4 output at up to 720p. Pro users get all formats, 4K resolution, batch conversion, and no watermark for a one-time $29 payment.

Does converting MP4 to WebM lose quality?

VideoConvert uses FFmpeg with configurable quality presets. The High preset (CRF 18) produces output that is visually indistinguishable from the source. You control the quality-to-size tradeoff with four presets: High, Medium, Low, and Draft.

Do I need to upload my video to a server?

No. VideoConvert processes everything locally on your computer. Your video files never leave your device, ensuring complete privacy and eliminating upload wait times.

How long does MP4 to WebM conversion take?

Conversion speed depends on file size, resolution, and your computer's hardware. A typical 1080p video converts in seconds to a few minutes. Local processing is often faster than cloud services because there is no upload or download step.

Format Conversion

Convert MP4 to WebM

Convert MP4 files to WebM format for web-optimized, royalty-free video playback. WebM offers smaller file sizes with excellent quality for HTML5 video.

100% Local Processing

No File Upload Required

MP4

MPEG-4 (H.264)

WebM

WebM (VP9)

Why Convert MP4 to WebM?

Royalty-free format — no licensing fees
Smaller file sizes for faster web loading
Native browser support in Chrome, Firefox, and Edge
Ideal for HTML5 video embeds
Better compression efficiency with VP9 codec

Common Use Cases

Website background videos
HTML5 video players
Progressive web apps
Web-based presentations

How to Convert MP4 to WebM

Open VideoConvert

Launch the app and drag your MP4 file into the upload area.

Select WebM Format

Choose WebM as your output format from the format selector.

Convert & Download

Click Convert and your file is ready. No cloud upload needed.

Frequently Asked Questions

HEVC vs H.264: Which Codec to Use?

How to Compress Video Without Losing Quality