Video Converter

Convert video or audio into MP4, WebM, or MP3 right in your browser with FFmpeg.wasm. No uploads, no sign-in, no tracking of your files.

Fast local conversion with a cleaner cyber UI

Drop in a file, choose MP4 for quick remuxing, WebM for web delivery, or MP3 when you only need audio. Everything runs on your device for privacy and control.

Start converting Quick tips
⚡ MP4 / WebM / MP3 🎬 Video + audio support 🔒 No uploads 🧠 FFmpeg.wasm local engine

Best for

  • Quick MP4 container fixes
  • Converting clips to WebM for web use
  • Extracting MP3 audio from video
  • Keeping private media fully local

Why Local File Conversion?

Conversion Controls

Local only
1) Source File
Drag & drop video or audio here
or click to browse from your device

You can load a video file or an audio file. MP3 output strips video automatically.

2) Output Format
Idle
No output yet

Conversion Log

Live log 

        

      

    


    

      

        
Best workflow

        
    
          
  • Choose your file
    • 
          
  • Pick MP4, WebM, or MP3
    • 
          
  • Convert locally
    • 
          
  • Download the finished file
    • 
        

      


      

        
When to use each format

        
    
          
  • MP4: best for quick playback compatibility
    • 
          
  • WebM: useful for websites and browser delivery
    • 
          
  • MP3: extract audio only from video or audio files
    • 
        

      


      

        
Notes

        
    
          
  • First run may take longer while FFmpeg loads
    • 
          
  • GitHub Pages usually runs single-threaded
    • 
          
  • Large files can take a while to process
    •