This is a utility to create RFID tag data to be written to your tags.

See the Getting Started guide for how to write tag data to NFC tags.

Read / Import
Write / Export
Fill Examples
Show hex dump 

  

  


  

    
  


  


  

    Unfortunately, this tool was written primarily using AI to expedite the
    development process. If anything is not working right, please let us know.
  





  

    
Web NFC

    

    
  






  

    

      Warning: Flipper Zero Cannot Write File
    

    

      At this time, the Flipper Zero will not be able to write this file. It
      appears to be a data construction issue on our end. While this can still
      be used for emulation, write support will come at a later date.
    

    

      If you're looking to write the tag data to an actual tag, we recommend
      using another device, such as a Proxmark3 or
      Android device, in the meantime.
    

    
    
  






  

    
How to Use

    

      This utility is designed to help you create OpenTag3D tag data to be
      written onto RFID tags, which can then be written directly with Web NFC
      (on Android) or via a number of tools.
    

    
Generating Tag Data

    

      To write tag data, simply fill out all of the applicable fields on the
      form. Fields with a red asterisk next to their name are required fields
      and must be filled out. All other fields are optional.
    

    

      You can also import existing tag data, either by reading it via Web NFC
      (on Android) or loading a previously exported file.
    

    
Exporting Tag Data

    

      Once you have filled out all of the fields, you can export the tag data to
      be written to a real tag in a few ways:
    

    
    
      
  • Direct Write via Web NFC
    • 
      
  • Proxmark3-Ready .bin
    • 
      
  • Flipper Zero .nfc (work-in-progress)
    • 
      
  • NFC Tools for Desktop
    • 
      
  • NFC Tools for Mobile (non-functional pending app bug fix)
    • 
    

    

      If you're not sure which format to use, the easiest way to write tags is
      to use Web NFC (on Android).
    

    
Write via Web NFC

    

      To write tag data via Web NFC, simply press the button and then hold an
      NFC tag up to the phone's RFID antenna. The antenna is usually placed next
      to the back camera, but may be in the center of the phone on some models.
      Once the tag is detected, the writing process will start. Hold the tag in
      place until the writing process is finished.
    

    
Write via Proxmark3

    

      To write tag data via a Proxmark3, download the Proxmark3 .bin file. Then,
      in a terminal, launch pm3 and run
      hf mfu restore -f [/path/to/file.bin].
    

    
Write via Flipper Zero

    

      Currently, the Flipper Zero implementation is non-functional due to a bug
      on our end. This is being worked on.
    

    
Write via NFC Tools Desktop

    

      To write tag data via NFC Tools for Desktop, download the NFC Tools
      Desktop .json. Then, in the app, go to Write > More > Open and load the
      .json file. Click the Write button once you've got a tag on your NFC
      reader.
    

    
Write via NFC Tools Mobile

    

      The NFC Tools iOS app has a bug where writing a tag from an imported .json
      profile corrupts any byte value of 128 or higher, garbling your tag data.
      This happens even with profiles exported by the app itself, so it is
      something that Wakdev must fix.