What this tool gives you
Type your asset value and you get three things: the EPC (Electronic Product Code) as a 96- or 128-bit hex string, a copy-ready ZPL ^RFW command to send to an RFID printer, and a preview of the smart label itself — antenna, chip and a printed Code 128 of the value. Switch to Batch to encode a whole serial range at once and export every value, EPC and ZPL command to CSV.
ASCII or hex?
You can encode the EPC from plain text (ASCII) — e.g. the asset tag FA-000123 — or write raw hexadecimal if you follow a strict EPC standard. For most internal asset tracking, ASCII keeps the chip and the printed label in perfect agreement. A 96-bit EPC holds up to 12 ASCII characters (24 hex); 128-bit holds more. Learn the fundamentals in our plain-English RFID encoding guide.
Why can't the browser write the chip?
Writing a tag needs radio hardware — an RFID printer such as the Zebra ZD621R or ZT411 RFID. A web page can't power a chip, so instead it prepares the exact EPC and ZPL for you. Find Asset's Label Studio then prints the label and encodes the chip in a single pass; see the RFID hardware guide for recommended printers and readers.
RFID vs barcode
RFID reads without line of sight and can scan hundreds of tags at once — ideal for fast audits and hands-free tracking. Barcodes and QR are cheaper and need no chip. Many teams use both. Compare in RFID vs barcode, or make printed codes with our barcode and QR generators.
Print & encode RFID in one pass
Find Asset's Label Studio designs the label, encodes the chip and tracks every tagged asset — no separate software.
Start a free 14-day trialFAQ
Can a browser write an RFID tag? No — encoding a chip needs an RFID printer. This tool gives you the EPC value and the ZPL command; Label Studio does the print-and-encode.
What is an EPC? The Electronic Product Code — the value stored in a UHF RFID chip's memory. It's the digital equivalent of the number printed on the label.
Is it free? Yes — encode as many tags as you like, single or batch, and export the EPC/ZPL to CSV, no signup.