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Free Offline Video Tools

Convert, trim, compress, resize and edit videos in your browser with FFmpeg.wasm. No upload, no account - your video files stay on your device.

No Upload 100% Private Works Offline Free

Full FFmpeg in your browser — no upload

These tools use FFmpeg.wasm, a complete port of the FFmpeg video processing library compiled to WebAssembly. That means the same professional-grade codec support used by filmmakers and video professionals, running entirely inside your browser tab. Your video files never leave your device.

We support the full range of video formats: MP4 (H.264/H.265), WebM (VP8/VP9), MOV (QuickTime), AVI, MKV, WMV, FLV, 3GP, M4V and TS. Most tools also support GIF as both input and output.

FFmpeg.wasm downloads about 25MB on first use. After that it is cached in your browser and loads instantly. Processing speed depends on your device CPU and available RAM.

Format Converters

Convert QuickTime MOV to universal MP4

Convert legacy AVI to modern MP4

Extract MP4 from Matroska containers

Convert WebM to widely-supported MP4

Convert Windows Media Video to MP4

Convert Flash Video to modern MP4

Convert mobile 3GP video to MP4

Convert Apple M4V to standard MP4

Convert MPEG transport stream to MP4

Convert MP4 to web-optimized WebM

Convert MP4 to Matroska MKV container

Convert MP4 to QuickTime MOV format

Convert MP4 to legacy AVI format

Universal Video Converter

Convert between any supported video formats

GIF Tools

Convert any video to animated GIF

Convert MP4 clips to animated GIF

Convert WebM video to GIF

Convert MOV clips to GIF animation

Convert AVI video to animated GIF

Convert GIF animation to MP4 video

Edit & Enhance

Cut video to a specific time range

Video Compressor

Reduce video file size offline

Change video resolution and dimensions

Rotate or flip video orientation

Play video backwards

Crop video to a specific region

Remove audio track from video

Extract Audio (MP3)

Extract audio track from any video

Speed up or slow down video playback

Join multiple video clips into one

Video Watermark

Add text watermark to videos

Frame Extractor

Extract individual frames from video

Subtitle Burner

Burn SRT subtitles into video

Metadata Editor

Edit video title, artist and tags

Thumbnail Generator

Generate thumbnail images from video

Why process video in the browser?

Privacy

Personal videos, home recordings and client footage should not be uploaded to third-party servers. FFmpeg.wasm keeps everything local.

No bandwidth limit

Uploading a 1GB video to a cloud converter takes minutes. Local processing skips the upload entirely.

No size caps

Cloud video tools typically cap uploads at 100–500MB. These tools have no server-side file size limit.

Frequently asked questions

Do these video tools upload my files?

No. All video processing uses FFmpeg.wasm, a full port of FFmpeg running inside your browser. Your video files never leave your device.

What video formats are supported?

MP4, MOV, AVI, MKV, WebM, WMV, FLV, 3GP, M4V, TS and GIF. Each tool page specifies accepted input formats.

Why does the first conversion take longer?

FFmpeg.wasm downloads about 25MB on first use. After that it is cached in your browser and loads instantly.

Is there a file size limit?

No server limit. Large files (1GB+) may be slow depending on your device CPU and available RAM.

Are these video tools free?

Yes, completely free with no registration, no watermark, and no time limit.

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