Choose a barcode image or paste label text to check postal references and compare label details with your booking.
Your image and text stay in this browser. The tool does not save them or send them to a server.Enter text, then choose “Interpret text” to see supported fields and their limits.
This link opens the official site without sending your pasted text or reference. Enter the item reference there yourself. A label can exist before physical handover.
The layout varies by product and printing channel. Select a field to read what is visible, what may be encoded and what needs a separate check.
A similar appearance does not make barcode formats interchangeable. Identify the documented format before applying a decoder.
S10 is a 13-character postal identifier. Its barcode can carry the identifier; the letters and digits do not encode a full recipient address.
UPU S10-12 · structure and check digitRoyal Mail parcel 2D labels come from shipping systems. The existence of a 2D code alone does not establish a fully tracked service. Use the item reference and booked product together.
Royal Mail · parcel shipping labelsMailmark has documented 2D and 4-state formats for mailings. Mailmark C/L use encoding and error correction that differ from the older CBC system; a legacy RM4SCC decoder is not a universal Mailmark decoder.
Royal Mail · official Mailmark technical resourcesMailmark barcode definition · 2023 reference editionHistorical CBC/RM4SCC references describe a postcode, Delivery Point Suffix and check character. This tool does not read bar states or validate that legacy check character. The historical guide is not current posting eligibility.
Royal Mail Wholesale · historical CBC guideA QR code supplied for printing a label is a printing credential. Royal Mail’s eligible printing locations and products are defined in the booking instructions. Use the printed item reference for parcel tracking.
Royal Mail · label printing QR instructionsReviewed 7 October 2026. Mailmark technical PDFs may be unavailable from some networks; follow the Royal Mail technical links for the applicable edition.