Guides to cataloguing records on Discogs

How to find and add records that have no barcode, and how to tell one pressing from another.

How to add a record without a barcode to DiscogsFind a record with no barcode on Discogs by its catalog number, narrow down the versions, or match it from a photo of the label.Which pressing do I have? How to read matrix and runout numbersFind the code etched in the dead wax, work out what its parts mean, and match it to the right pressing on Discogs.