MP4 to WebM

Shrink MP4 videos into modern, royalty-free WebM in seconds - perfect for websites, apps and email embeds.

or drag and drop your file

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How to convert MP4 to WebM

Create a WebM file in three quick steps

1. Upload your MP4

1. Upload your MP4

Click “Upload” or drag a video onto the page. HD and 4K clips up to 2 GB are processed securely over HTTPS.

2. Pick WebM settings

2. Pick WebM settings

WebM is pre-selected. Choose VP9 for better quality at smaller sizes or VP8 for maximum browser support. Adjust resolution or bitrate in “Advanced settings”.

3. Download the WebM

3. Download the WebM

Press “Convert”. Your optimized .webm file is ready in seconds - embed it with the HTML5 <video> tag or share it anywhere.

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Easy convert MP4 to WebM

Smaller files, faster pages

VP9 compression technology can cut file size by up to 50% compared with H.264 while maintaining excellent visual quality, significantly lowering bandwidth costs and speeding up page loads. This makes WebM perfect for web developers, content creators, and website owners who want to optimize video delivery, reduce hosting expenses, and improve user experience with faster-loading pages. Smaller file sizes mean quicker streaming, less data usage for viewers, and better SEO performance through improved page speed metrics.

Choose the format

Royalty-free & future-proof

WebM is an open-source, royalty-free video format backed by Google and supported by major browser vendors. It works natively in Chrome, Firefox, Edge, Opera, Android, and many other modern browsers without requiring extra codecs, plugins, or patent fees. This makes WebM ideal for web developers, CMS platforms, and businesses that want to avoid licensing costs while ensuring broad compatibility. The format is future-proof, actively maintained, and continues to evolve with new codec improvements, making it a smart choice for long-term video hosting and distribution.

Explore more free tools

Enhance your converted WebM videos with our complete editing suite. Trim, resize, add subtitles, or download videos - everything you need in one browser-based workspace.
Video Resizer

Video Resizer

Resize any video for TikTok, Instagram or YouTube online: crop or fit perfectly with zero quality loss.
Add Emoji

Add Emoji

Add vibrant emoji stickers to videos in-browser: choose size, position and timing to match every scene.
Trim Video

Trim Video

Cut beginning, middle or end of any clip online: trim precisely, remove unwanted parts, keep best moments.
Reverse Video

Reverse Video

Play footage backward for social posts: upload, reverse instantly in one click, then download the edited file.
MP4 to MP3

MP4 to MP3

Extract high-quality MP3 audio from MP4 movies online: fast conversion, no installs, zero loss in bitrate.
Add Stickers

Add Stickers

Insert fun, colorful stickers on video frames: drag, resize, schedule appearance and boost viewer engagement.
YouTube Downloader

YouTube Downloader

Download YouTube videos to your device in chosen format and resolution: quick, secure, no quality degradation.
Add GIF

Add GIF

Overlay animated GIFs on top of any video track: control size, placement and timing for dynamic visual effects.
Crop Video

Crop Video

Crop footage directly online to focus on key content: set custom frame, remove distractions, export instantly.
YouTube to MP3

YouTube to MP3

Convert YouTube links to MP3 audio in seconds: keep music, podcasts or lectures offline with perfect fidelity.
TikTok Downloader

TikTok Downloader

Save TikTok videos in HD without watermark: paste the link, download instantly for offline viewing or edits.
Twitter Downloader

Twitter Downloader

Grab videos from Twitter posts in multiple qualities: paste URL, download fast and watch offline anytime.
YouTube to MP4

YouTube to MP4

Get YouTube videos as MP4 files with selectable quality: copy URL, convert online, store for editing or sharing.
Instagram Downloader

Instagram Downloader

Download Instagram videos, Reels, stories and IGTV in high definition: no login, no watermarks, free forever.
AVI to MP4

AVI to MP4

Convert legacy AVI files to modern MP4 format online: reduced size, broader compatibility, instant download.
MP4 to FLAC

MP4 to FLAC

Extract lossless FLAC audio from MP4 clips: preserve full quality for music archiving or professional editing.
WebM to MP4

WebM to MP4

Transform WebM videos to universal MP4 for smooth playback on any device: drag, convert and save quickly.
MP4 to WMA

MP4 to WMA

Turn MP4 video into compact WMA audio files within your browser: efficient size, ideal for Windows players.
MP4 to DivX

MP4 to DivX

Re-encode MP4 movies to high-compression DivX format: smaller files, good quality, ready for legacy devices.
MP4 to MOV

MP4 to MOV

Change MP4 videos to Apple-friendly MOV format online: perfect for QuickTime or Final Cut workflows.
MP4 to M4A

MP4 to M4A

Strip audio from MP4 and save as clean M4A tracks: great for iOS playlists and streaming with small file size.
MP4 to AVI

MP4 to AVI

Convert MP4 clips to widely supported AVI containers: maintain quality while ensuring legacy device playback.
MP4 to WebM

MP4 to WebM

Export MP4 content as lightweight WebM for web delivery: faster streaming and reduced bandwidth consumption.
MP4 to WMV

MP4 to WMV

Switch MP4 videos to WMV format for smooth playback on Windows PCs and classic media players.
MP4 to MPEG

MP4 to MPEG

Repackage MP4 footage as standard MPEG files: optimize for broadcasting, DVDs or older hardware.
MP4 to MPG

MP4 to MPG

Convert MP4 files to MPG quickly online: ensure compatibility with vintage devices and authoring software.
MP4 to WAV

MP4 to WAV

Extract uncompressed WAV audio from MP4 video: ideal for editing, podcasts or high-quality sound archiving.
MP4 to FLV

MP4 to FLV

Turn MP4 videos into lightweight FLV for legacy web players: faster loading without sacrificing clarity.
MP4 to M4V

MP4 to M4V

Convert MP4 to DRM-ready M4V for effortless sync with iTunes, Apple TV and other iOS environments.
MP4 to MKV

MP4 to MKV

Wrap MP4 streams in flexible MKV containers: add subtitles, multiple tracks and achieve better compression.
MP4 to GIF

MP4 to GIF

Create looping GIF animations from MP4 snippets: select range, convert online, share on social platforms.
MP4 to WebP

MP4 to WebP

Generate animated WebP images from MP4 clips: enjoy tiny file sizes and rapid page loading speeds.
MP3 to MP4

MP3 to MP4

Combine MP3 audio with still imagery to form MP4 video: ideal for YouTube or social music sharing.
WAV to MP4

WAV to MP4

Encode WAV audio into MP4 video with a static cover: reduce size and improve compatibility for uploads.
GIF to MP4

GIF to MP4

Upgrade looping GIFs to smooth MP4 video: smaller files, better quality, compatible with all devices.
See all features

FAQ

Why convert MP4 to WebM?

WebM offers several key advantages: superior compression efficiency that can reduce file sizes by up to 50% compared to H.264 MP4, royalty-free licensing that eliminates patent fees and legal concerns, and native playback support in all modern browsers without requiring extra codecs or plugins. This makes WebM ideal for web developers, CMS platforms, website owners, and content creators who want to optimize video delivery, reduce bandwidth costs, improve page load speeds, and ensure broad browser compatibility. WebM is particularly valuable for HTML5 video embedding, email marketing, and web-based video streaming applications.

Which codec should I choose, VP8 or VP9?

The choice depends on your target audience and quality requirements. VP9 delivers significantly higher quality at lower bitrates, offering better compression efficiency and smaller file sizes, but requires newer browsers (Chrome 29+, Firefox 28+, Edge 79+). VP8 is slightly larger in file size but provides broader compatibility, supporting older browsers and devices. For modern web applications targeting current browsers, VP9 is recommended for optimal quality and file size. For maximum compatibility including legacy systems, VP8 is the safer choice. You can also serve both formats using HTML5 multiple source tags for the best of both worlds.

Can WebM contain transparent video?

Yes, WebM with VP9 codec fully supports alpha channel transparency. Enable "Transparency" in Advanced settings to export WebM with a clear background, allowing you to overlay videos on other content, create picture-in-picture effects, or integrate videos seamlessly into web designs. This is perfect for web developers creating interactive experiences, motion graphics designers, and content creators who need videos with transparent backgrounds for compositing or overlay effects. Note that VP8 does not support alpha channels, so VP9 is required for transparency features.

Will converting lower my video quality?

Video quality depends on the bitrate you choose. The default auto-bitrate setting provides a balanced result that optimizes both file size and quality. For near-lossless output that closely matches your source video, raise the bitrate in Advanced settings. VP9 codec is particularly efficient, often delivering better quality than H.264 at the same bitrate, or equivalent quality at lower bitrates. Higher bitrates preserve more detail but increase file size, while lower bitrates reduce file size but may introduce some quality loss. For web delivery, the default settings usually provide an excellent balance.

Does WebM play on Safari or iOS?

Safari on macOS 11+ (Big Sur and later) supports VP9 WebM natively. However, older Safari versions and iOS browsers (including current iOS Safari) do not support WebM and require an MP4 fallback. For maximum compatibility across all platforms, consider serving both formats using the HTML5 <source> tag, which allows browsers to automatically select the format they support. This ensures your videos play on all devices - WebM for modern browsers (Chrome, Firefox, Edge) and MP4 for Safari and iOS devices. This dual-format approach is the recommended best practice for web video delivery.

What is the maximum file size I can upload?

You can upload files up to 2 GB per conversion. Larger video projects should be trimmed or down-scaled before upload to ensure smooth processing. The conversion time depends on factors such as file size, video resolution, codec complexity, and selected encoding settings. All files are processed securely using encrypted HTTPS connections, ensuring your media remains private throughout the conversion process. For very large files, consider splitting them into smaller segments or using video editing software to optimize the source material first.

How are my files kept private?

Your privacy and security are our top priorities. All file transfers use encrypted HTTPS connections to protect your data during transmission. Files are processed securely in volatile memory (RAM) and are automatically deleted from our servers within minutes after conversion completion. We never store, share, or access your media files beyond the conversion process, ensuring complete privacy and security for all your video content. Your files remain yours alone, with no permanent storage or third-party access.