StampDecoder.app Modern GB Stamp Decoder

Digital Philately

Scan and decode modern GB stamp barcodes.

Modern GB Stamp Decoder helps collectors understand barcoded stamps (JGB / DataMatrix) at a glance — with a clear summary and a full decode view for the details.

JGB / DataMatrix decoding
Collector-friendly summary
No tracking • No analytics

App Store and Google Play links will appear here when the app is live.

Fast scan-first flow

Open the camera, scan the barcode, see the result immediately.

Summary + Full decode

Simple collector view up front, deeper breakdown when you want it.

Built for modern GB

Focused on the realities of barcoded stamp collecting.

What you’ll see

  • Barcode generation date and key fields extracted from the JGB string
  • Issue-type and origin guidance where available
  • Useful “at a glance” wording designed for collectors

Who it’s for

Collectors of modern GB barcoded stamps, people exploring Digital Philately, and anyone who wants a cleaner way to understand what a barcode is telling them.

Independent collector tool

This app is an independent project for collectors and is not affiliated with Royal Mail.