MP4 to WEBM Converter
Convert MP4 videos to WebM online for websites, browser playback, and lighter video delivery. Free, fast, and no signup required.
Or drop files here. Max file size 1GB.
Selected Files
In Conversion
Input format
MP4 video
MP4 is the most common video container for phones, cameras, downloads, social apps, and editing exports. It is the safest source format when you need to create a web video version for browsers or websites.
Output format
WEBM video
WebM is a web-focused video container commonly used for HTML5 video, browser playback, screen recordings, and lightweight online delivery. Convert MP4 to WebM when your website, app, or publishing workflow expects a WebM file.
How to convert MP4 to WEBM online
Use this MP4 to WEBM converter when you need a browser-friendly video file for a website, web app, CMS upload, or HTML5 video workflow. Upload your MP4, keep WEBM selected as the output, and download the converted WebM video when processing is complete.
Convertr works in your browser with no account and no software install. Files up to 1 GB are supported, and you can adjust codec, quality, bitrate, resolution, and audio settings before starting the conversion.
- 1 Upload your MP4 video file.
- 2 Choose WEBM as the output format.
- 3 Open settings if you need to adjust codec, quality, bitrate, resolution, or audio options.
- 4 Click Convert to start the MP4 to WEBM conversion.
- 5 Download your WEBM video when processing is complete.
WebM is useful for modern browser playback and web publishing. If you need the broadest device compatibility for iPhone, Android, TVs, or social uploads, MP4 is usually the safer target.
MP4 to WEBM converter shortcuts
Jump directly to the converter, FAQ, or related video tools that match common MP4 and WebM search intent.
Why use WebM for online video?
MP4 is usually best for universal playback. WebM is useful when your workflow is built around modern browsers and web delivery.
HTML5 video publishing
Create WebM files for websites, landing pages, product demos, web apps, and browser-first video experiences.
Modern browser support
WebM is designed for the web and is commonly used with VP8, VP9, AV1, Vorbis, or Opus streams in browser playback workflows.
No signup or install
Convert directly in your browser without installing desktop software or creating an account.
Advanced output controls
Use settings when you need to tune quality, resolution, codec, bitrate, or audio options before exporting WebM.
MP4 to WEBM FAQ
Is this MP4 to WEBM converter free?
Yes. Convertr lets you convert MP4 to WEBM online for free with no registration, no watermark, and no software install.
Why convert MP4 to WEBM?
WebM is useful for websites, HTML5 video, browser playback, lightweight web delivery, and workflows that specifically ask for a .webm file.
Can I convert large MP4 files to WEBM?
Yes. You can upload MP4 videos up to 1 GB per file. This supports longer recordings, exports, demos, and downloaded videos that need a WebM version.
Will converting MP4 to WEBM reduce quality?
Quality depends on the source file and conversion settings. Use higher quality or bitrate settings when preserving detail matters more than creating a smaller WebM file.
Should I use WEBM or MP4 for video?
Use WebM for modern web publishing and browser-first workflows. Use MP4 when you need the safest compatibility across phones, TVs, messaging apps, social platforms, and older software.
Are my MP4 files private?
Files are processed securely for conversion and automatically deleted after the conversion flow. You do not need to create an account.
MP4 to WEBM searches this page covers
Quick paths for users comparing WebM, MP4, and common web video conversion tasks.
Related video conversion tools
Use these focused video converters when you need another common container, web video workflow, or compatibility export.