Decode view
Reads the stamp barcode and shows the useful philatelic detail: value, issue, dates, origin and notes.
Up to now, you've only collected half the story.
Modern GB Stamp Decoder reads the barcode on your Royal Mail stamps and shows the details collectors look for: issue, value, colour, dates, origin and notes. Then you can mark what you have and keep a clean record.
Three simple steps to identify and build your collection.
Point your camera at the stamp barcode on a modern GB stamp. It can often read through clear mounts and sleeves, although glare or curved plastic may affect scanning.
Check the issue, value, colour, print date, origin and notes without hunting through raw barcode text.
Mark it Mint or Used, save it to your list, and make a tidy label for an album page, sleeve, photo or write-up.
Camera opens straight to scan. No menus, no setup, no friction. Just point and read.
Shows the stamp details in terms collectors use, with the technical barcode text kept out of the way.
Mark Mint or Used, see what you already have, and spot the gaps in a set.
Generate clean, printable labels for albums, sleeves, photos or write-ups.
Use the built-in MGB reference in the free app, with Pro available for collectors who want the additional catalogue detail.
Barcode contents, camera images and your collection stay on-device. Privacy-light product analytics help us improve the app; they never include the barcode, image or collection contents.
The next catalogue update treats booklets, business sheets, prestige panes and collector sheets as collectable objects in their own right. These features are in testing and are not yet in the public App Store or Google Play release.
67 physical products now have locked QO or KO identities, separate from the MGB references of the stamps they contain.
See the values, quantities, colours and design names of the stamps contained in a booklet, pane or sheet.
Guided checks distinguish facts about the stamp from characteristics of the object, such as its crown, lettering, panel and backing paper.
If your copy differs from the catalogue, the app records your observation first. Reporting it for review remains optional.
Identify the stamp in front of you, then check whether it is already in your collection.
Reads the stamp barcode and shows the useful philatelic detail: value, issue, dates, origin and notes.
Open the full decode when you want supplier details, version data, labels or collection actions.
The useful collector details first, with the lower-level barcode information available when you want it.
Whether you are checking varieties or keeping a simple list, the job is the same: identify the stamp and record whether you have it.
The barcoded definitive family — from the 2021 trials and full 2022 rollout onward.
King Charles III era issues, with colour, supply, and print-date detail.
Country issues for Scotland, Wales, NI and England — flagged as regional.
FDC coils and prestige panes — origin labelled clearly in the decode.
The sponsored postmark is included as a small nod to Digital Philately: real stamps and covers first, with decoded barcode detail as another piece of the record.
Royal Mail stamp barcodes, also known as DataMatrix barcodes — including the 2021 trials, the full 2022 rollout, KCIII definitives, regional issues and Christmas stamps.
Yes. Scanning and decoding happen on your device. You don't need a connection in the field, and your collection isn't shipped off to a server.
The app does not use advertising or cross-app tracking. It sends privacy-light product-usage events to PostHog, without barcode strings, images, stamp or object record IDs, notes or collection contents. This website uses optional Google Analytics only if you accept analytics cookies. See the privacy policy for the full detail.
The core scan, decode and collection tools are free. Pro is available for collectors who want the additional catalogue detail; the app shows exactly what is included before you opt in.
Stamp Decoder is live on the Apple App Store and Google Play.
No. Modern GB Stamp Decoder is an independent collector tool. Stamp imagery shown on this site is used under licence — we are not affiliated with Royal Mail Group Ltd.
Download Stamp Decoder from the Apple App Store or Google Play.