What Is a Barcode Analyzer?
A barcode analyzer is a tool used to validate and inspect barcode data values.
Instead of generating a barcode image, this tool checks whether a barcode value is valid, invalid, or unsupported based on barcode standards.
Fj-TechTools' barcode analyzer works directly with text-based barcode input and is ideal for validation, testing, and troubleshooting.
What This Barcode Analyzer Can Do
This tool allows you to:
- Detect the barcode type from the input value
- Validate barcode structure and length
- Verify checksum digits (where applicable)
- Identify invalid or unsupported barcode formats
- Suggest corrections (such as leading zero for ITF-14)
No barcode images or scanners are required.
Supported Barcode Validation
Our barcode analyzer currently supports validation for common 1D barcode formats, including:
- EAN-13 - 13-digit retail product barcodes (checksum validated)
- UPC-A - 12-digit barcodes commonly used in North America (checksum validated)
- ITF-14 - 14-digit carton and logistics barcodes (checksum validated)
- Code128 - Alphanumeric barcodes (structure detected)
- Code39 - Industrial and inventory barcodes (structure detected)
If a barcode value does not match a supported format, the tool clearly marks it as unsupported.
ITF-14 Barcode Validation (Special Feature 🔥)
For ITF-14 barcodes, this analyzer provides advanced validation, including:
- Checksum digit verification
- Detection of invalid ITF-14 values
- Automatic suggestion to add a leading zero when applicable
This is especially useful for logistics, carton labeling, and GS1-based systems.
When Should You Use This Tool?
Use the barcode analyzer if you want to:
- Validate a barcode value before printing
- Troubleshoot barcode scan failures
- Check checksum correctness
- Identify whether a barcode is supported
- Verify ITF-14 or EAN barcode data
To create barcodes instead, use our Barcode Generator.
How the Barcode Analyzer Works?
- Enter or paste a barcode value into the input field
- The analyzer automatically detects the barcode type
- Checksum digits are calculated and compared (when applicable)
- You receive a clear result:
- Valid - Barcode format recognized and checksum correct
- Invalid - Barcode format recognized but checksum incorrect
- Unsupported - Barcode format not recognized by this tool
For certain invalid barcodes, the tool also provides smart suggestions (for example, detecting a possible ITF-14 barcode with a leading zero).
