How does NFC cloning work online?

The tool reads all NDEF records from the source tag into browser memory, then writes those exact records onto the target tag when brought into range.

Can the NFC tag serial number (UID) be cloned?

No. Factory hardware UIDs are permanently set during manufacturing and cannot be modified or cloned using the Web NFC API.

Any writable NFC Forum tag with sufficient capacity for the source payload (e.g., NTAG213, NTAG215, NTAG216).

Easily duplicate NDEF records from a source tag to a new target tag in two simple steps. Directly in your browser.

FreeNDEF DuplicationTwo-step workflow⚡ Chrome for Android only

Browser requirement: Web NFC works only in Chrome on Android (v89+). Enable NFC in your phone's settings before scanning.

1 Read Source Tag

2 Write Target Tag

📋

Tap the button below and hold the original NFC tag against your device to copy its NDEF message.

Clone console active. Click Step 1 to begin...

Loading cloner…

Duplicate your tag payload in two simple steps.

Tap "Read Source Tag" and hold the original NFC tag near your phone to capture its NDEF records.

Switch to your blank or rewritable target tag and tap "Write to Target Tag".

The new tag will now carry the identical NDEF payload (URLs, contact info, text, etc.).

📋 NDEF Records OnlyClones data payloads (URLs, vCards, text). Works with standard NTAG series tags.

🔒 Hardware UID LimitationFactory hardware UIDs (serial numbers) are hardwired at manufacturing and cannot be cloned via Web NFC.

🏷️ Tag CapacityEnsure the target tag has sufficient memory capacity (e.g., NTAG215 or NTAG216 for large vCards).

🛡️ Safe & PrivateAll tag scanning and writing occurs locally in your browser memory without uploading to any server.