Free online video & audio converter

Convert MP4, MP3, WebM, MOV, AVI, and WAV files directly in your browser. 100% private in-device processing with zero server uploads.

Drag and drop your video file here or click to browse

Supports files up to 1GB • 100% free • Processed directly on your device

Supports: MP4, MP3, WebM, AVI, MOV, MKV, FLV, WAV, AAC, and OGG

VidDow video converter is a free, browser-based media conversion tool that processes video and audio files directly inside client device RAM using local GPU acceleration. Because media files never upload to external cloud servers, conversions run instantly with zero wait times, no file size bottlenecks, and complete data privacy.

How to convert video and audio online in seconds

Select media file

Choose or drag and drop any video or audio file from your computer, phone, or tablet into the secure drop zone.

Choose target format

Select your target format (MP4, MP3, WebM, WAV, MOV, MKV...) and choose your preferred resolution or audio bitrate.

Instant in-device export

Conversion executes directly on your device with hardware acceleration. Download immediately with 100% privacy and zero server wait.

Why choose VidDow over cloud converters?

Traditional online converters force you to upload large, private media files across the web to remote servers. VidDow processes files 100% inside your device RAM with local hardware acceleration, guaranteeing complete privacy and zero upload wait times.

Feature & capability	Traditional cloud converters	VidDow in-device converter
Processing location	Remote third-party cloud servers	100% direct in-device RAM processing
File upload latency	10–30 minutes upload for 500MB video	0s upload wait (instant local access)
Privacy & confidentiality	Files saved on servers, logged, data risk	100% private (0 bytes leave your device)
File size limits	Strict 50MB–100MB paywalls	500MB+ supported in local RAM
Pricing & watermark	Paid subscriptions, daily caps, watermarks	100% free, unlimited & no watermark

Supported video & audio formats

Easily convert between popular video formats or extract high-fidelity audio tracks with smart codec detection and hardware acceleration.

Video formats

MP4 Universal H.264 / AAC for iPhone, Android, smart TV and web

WebM Modern Google VP9 / Opus format for HTML5 web streaming

MOV Apple QuickTime format for macOS, iOS, and Final Cut Pro

MKV Matroska multimedia container with multiple audio and subtitles

AVI Audio Video Interleave for legacy media players and Windows

GIF Animated loop images for social media, memes, and Discord

Audio formats

MP3 Universal audio up to 320 kbps studio quality for all devices

M4A High-efficiency AAC audio stream standard for Apple devices

WAV Uncompressed lossless audio format for editing and production

AAC Advanced Audio Coding for YouTube, streaming, and mobile devices

OGG Open-source Vorbis audio format for gaming and web playback

Frequently asked questions

Are my files uploaded to any server during conversion?

Never. All conversion and transcoding run 100% locally on your device with high-speed hardware acceleration. Your files remain completely private, never upload to any remote server or cloud storage, and no registration or personal account is ever required.

Why is in-device conversion significantly faster than traditional converters?

Traditional online converters force you to upload large media files across the Internet to a remote server, wait in long rendering queues behind other users, and re-download the output. VidDow eliminates all upload and queue wait times: your conversion starts instantly utilizing the full power of your device's multi-core CPU and GPU.

Which video and audio formats can I convert between?

VidDow supports converting between MP4 (H.264 Universal), WebM, MOV (Apple QuickTime), MKV, AVI, animated GIF, MP3 (up to 320 kbps studio quality), M4A, WAV (lossless), AAC, and OGG formats with lossless smart copy whenever possible.

Is the converter 100% free and does it add watermarks?

VidDow is completely free with absolutely no watermarks, no hidden VIP subscriptions, and no daily limits. You can convert as many files as you need without creating an account or providing credit card details.

Can I convert video files on mobile phones and tablets?

Yes. VidDow works seamlessly across all modern mobile browsers including Safari on iPhone/iPad and Google Chrome on Android. You do not need to install apps from the App Store or Google Play.

Do I need to install any software or browser extensions?

No software, plugins, or browser extensions are required. VidDow runs entirely inside standard web browsers using modern web capabilities, keeping your system lightweight and secure.

Complete private multimedia suite

Explore free online video & audio tools

All-in-one in-device multimedia toolkit. Process, transform, and refine your media directly inside client browser RAM with zero server uploads, complete privacy, and zero watermarks.

Recommended next step: Format converted? Inspect stream parameters with Metadata checker or trim clips in Video trimmer.

4K & MP3