NFC Tag Reader/Writer
Read and write NFC tags online free from your browser.
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What is NFC Tag Reader/Writer?
NFC Tag Reader/Writer is an experimental web tool that allows you to read from and write to NFC tags directly in your browser using the Web NFC API. Create smart business cards, automation triggers, and URL shortcuts that work with a simple tap. Currently supported on Chrome for Android with NFC hardware.
Key Benefits
- Read and write NFC tags wirelessly
- Create smart business cards
- Program URL launchers and automation
- No special software needed
Common Use Cases
- •Digital business cards
- •WiFi password sharing
- •Automation triggers for smart homes
- •Event tickets and check-ins
- •Product information and authenticity
How to Read and Write NFC Tags
- Check Device Compatibility: Ensure you have an NFC-enabled device (Android phone with NFC) and a compatible browser (Chrome for Android).
- Open the Tool: Navigate to the NFC Tag Reader/Writer tool in your browser on an HTTPS connection.
- Prepare Your Data: Enter the data you want to write: a URL, text message, or JSON data. Keep it within the tag's storage limit (usually 137-888 bytes).
- Select Write Mode: Choose "Write" mode and click the "Write to Tag" button. The browser will request NFC permission.
- Hold Tag Near Device: Hold your NFC tag close to the back of your phone/device. Maintain proximity until writing completes.
- Verify and Test: Switch to "Read" mode and tap the tag to verify the data was written correctly. The tag will now trigger the stored action when scanned.
Key Features
- NFC Read/Write: Read from and write data to NFC-compatible tags using the Web NFC API.
- Multiple Data Types: Store URLs, plain text, contact information, or JSON data on NFC tags.
- NDEF Format Support: Compatible with NDEF (NFC Data Exchange Format) for wide device support.
- Write Verification: Read back and verify data immediately after writing to ensure success.
- Storage Capacity Info: View tag storage capacity and remaining space before writing.
- One-Tap Writing: Simple tap-to-write interface for quick NFC tag programming.
- Browser Compatibility: Works on Chrome for Android with NFC hardware support.
- HTTPS Required: Secure connection required for Web NFC API access.
Frequently Asked Questions
What devices support NFC reading and writing?
NFC requires a device with NFC hardware and a compatible browser. Chrome on Android supports Web NFC API. iOS Safari has limited support. Desktop browsers generally do not support NFC unless connected to an external USB NFC reader.
How do I write data to an NFC tag?
Enter the data you want to store (URL, text, or JSON), click "Write", and hold your NFC tag close to your device. The tool will encode and write the data to the tag. You'll see a success message when complete.
What can I store on an NFC tag?
Common data types include: URLs (open websites), text (contact info, messages), and JSON (structured data). Most NFC tags can store 137-888 bytes depending on the tag type.
Why is NFC not working?
NFC requires: (1) hardware with NFC capability, (2) Web NFC API support in browser (Chrome Android), (3) HTTPS connection, (4) user permission granted, and (5) an NFC tag compatible with NDEF format.
Is my data secure when writing to NFC tags?
NFC tags themselves are not encrypted - anyone with an NFC reader can read them. For sensitive data, consider using encryption before writing. The tool processes data locally and does not store or transmit your information.
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