Custom 4-state symbology
Enter data, then download.
Format: Letters D A F T only
Custom 4-state symbology
Enter data, then download.
Format: Letters D A F T only
The Custom 4-State barcode belongs to the Postal Codes family. Custom 4-state symbology. On this page you can generate Custom 4-State barcodes directly in your browser: enter your data, watch the preview update in real time, then download the finished symbol as PNG or SVG. Rendering happens locally on your device — nothing you type is ever uploaded to a server.
This symbology was designed for a specific industry workflow, and readers check its structure strictly — follow the input rules below so the generated symbol scans correctly the first time.
Custom 4-State codes are used for product labeling, internal tracking, and document management workflows. Because the data is fixed inside the symbol at generation time, a printed Custom 4-State barcode keeps working indefinitely — there is no service behind it, no expiry date, and no per-scan fee.
DAFTDAFTYes. You can generate and download Custom 4-State barcodes for free, with no sign-up and no watermark. Generation runs entirely in your browser — your data is never uploaded.
Letters D A F T only. For example: DAFTDAFT. If your data does not match the expected format, the encoder will show an error instead of producing a symbol that cannot scan.
PNG for screens and documents, and SVG for unlimited-quality print and design work. Both formats are rendered locally in your browser.
No. The barcode is a fixed image of the data you entered — it keeps scanning for as long as the print or display lasts. If your data changes, simply generate a new barcode.
Need a different symbology? Every type below has its own generator page with the same browser-based, no-signup workflow. Looking for the long-form reference instead? Read the Custom 4-State guide, or generate many codes at once with the bulk barcode generator.