Convert, compress, trim, and extract from video files, entirely in your browser. Your videos are processed on your own device and never uploaded to a server.
Convert videos between MP4, WebM, MOV, MKV, and more, right in your browser
Shrink video file sizes with adjustable quality, private, in-browser compression
Cut clips from videos with start and end timestamps, no upload required
Turn video clips into shareable animated GIFs in your browser
Extract audio tracks from videos as MP3 files, fast and private
Remove audio from a video or adjust its volume, in your browser
Resize videos to any resolution or social preset, private, in-browser
Crop videos to any region or aspect ratio, no upload required
Rotate or flip videos 90/180 degrees, processed in your browser
Speed up or slow down videos with synced audio, in-browser
Play videos backwards with reversed audio, private, in-browser
Loop videos 2x, 3x, or any number of repeats, no upload
Combine multiple videos into one file, private, in-browser
Grab thumbnails or full-resolution frames from any video
Add a text or image watermark to videos, in your browser
Burn SRT or VTT subtitles into videos permanently, no upload
Replace or mix a music track into any video, in-browser
Turn photos into a slideshow video with music, no upload
Convert audio files between MP3, WAV, OGG, M4A, AAC, and FLAC
Cut and trim audio files with precise start and end times
Join multiple audio files into one track, private, in-browser
Transcribe audio and video to text with your own AI key
These tools run FFmpeg, the same open-source engine used behind the scenes by countless desktop and cloud video applications, compiled to WebAssembly and executed directly in your browser tab. When you pick a file, it is read into your browser's memory, processed locally, and the result is handed back to you as a download.
Nothing is uploaded. There is no server-side processing, no queue, no file retention policy to worry about, because your video never leaves your device. The first time you use a video tool, the processing engine (about 31 MB) downloads once and is then cached by your browser for every future visit.
Practical limits: files up to 200 MB are supported, and longer videos take proportionally longer to process. Very large or high-resolution files may be limited by your device's available memory.