FileCarpenterFCShare
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Direct browser transfer

Send files directly when the networks allow it.

FCShare prefers peer-to-peer WebRTC and reports the negotiated route. When direct connectivity fails, TURN can relay encrypted packets so the transfer still works.

Start the transfer

Either way you get a code. Whichever device has a camera scans it.

Choose a file.

Scan this.

Or open the link, or type the name.

—

Enter the code.

Smart Send

Recipient ready.

Checking whether the original file is the best fit.

Recipient capabilities are approximate and temporary.
Original

Original file

Best quality

Technical details 


FCShare never changes your original file. Optimization only happens after you choose it.











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    The short answer
    “Direct” is a route, not a marketing promise
    
      
    WebRTC tries to establish the best path between the two browsers. Local-network or direct internet routes are preferred, but NATs and corporate firewalls sometimes require TURN.
    FCShare therefore does not claim every transfer is serverless or always direct. It does promise that the signalling/TURN infrastructure is not used as persistent file storage.
    
    
    

    
    
      
    How to do it
    Three steps, in the browser.
    
      
      
      
    1. 1
      Open a temporary room
      Either device can create the QR code.
      2. 
      
    2. 2
      Establish WebRTC
      ICE selects local, direct or relayed connectivity.
      3. 
      
    3. 3
      Transfer
      The existing DataChannel flow-control engine moves the bytes.
    
    
    

    
    
      
    Best for
    • One-time browser transfer
    • Cross-platform handoff
    • Large files
    • Private live sessions
    
      
    What stays intact
    • WebRTC encryption
    • No FileCarpenter payload archive
    • Route indicator
    • Optional room password
    
      
    Know before sending
    • TURN may be required
    • No offline download link
    • Both devices stay connected
    • Network policy can still block WebRTC entirely
    
    
    

    
    
      
    What TURN does
    TURN forwards encrypted WebRTC packets when the peers cannot reach each other directly. It is a relay, not a file library.
    
      
    What the signalling service does
    It pairs the temporary room and relays SDP/ICE setup information.
    

    
    
      
    Questions people ask
    
      
    
      
    Is every FCShare transfer direct P2P?
    No. TURN relay fallback may be required.
    
      
    Does a TURN relay see a stored file?
    FCShare does not create a persistent downloadable copy on the relay.
    
      
    Can I tell which path was used?
    FCShare reports Local, Direct or Relayed when browser statistics expose the candidate pair.
    
    
    

    
    
      
    Related jobs
    
      
    Browser P2P transferPeer-to-peer file transfer, without installing an app.Use a browser-based peer-to-peer file transfer. Files move over encrypted WebRTC; the server coordinates the connection but does not store the payload.
Private one-time transferA private file transfer with less left behind.Make a private one-time file transfer with no account or stored server copy. Optional room password, encrypted WebRTC transport, and temporary rooms.
Large-file P2PSend large files peer-to-peer, with a smarter preflight.Send large files peer-to-peer between browsers. Direct when possible, encrypted TURN fallback when needed, with Smart Send storage and compatibility checks.
    
      Browse all file-transfer guides →