Online QR Code - Barcode Scanner

QR Code Reader is a free online application to read barcodes from images or your mobile phone's camera. It is able to locate and read multiple barcodes on images. Our sophisticated algorithm allows you to read even damaged barcodes. QR Code reader supports many different input formats (PNG, JPEG, BMP, GIF).

Is exact size important for barcode symbols?

For some types of barcodes it is important. For ITF-14 size is required to be 142.75 mm wide and 32 mm high. For EAN-13 it is required to be 37.29 mm wide and 27.85 mm high.

Can the barcode be very small?

It can be reasonably small. For example 1x1 cm for the 2D barcode. But in the smaller barcode, you can encode less information. And you also should use a printer with higher resolution.

How much data can barcode contains?

It is usual to be about 25 characters for a 1D barcode and about 2000 for a 2D one. Of course the more characters you encode the bigger the barcode. The 1D barcode could become impractically wide if it is more than 15 characters encoded.

What is a 1D or linear barcode? What is a 2D barcode?

A 1D or linear barcode is a combination of vertical bars. For some of them, you can encode only numbers for others you can encode letters also. Most of the barcode scanners can read them by scanning just a line. 2D barcode encodes information in two dimensions and therefore can keep away more information in it. And it is usually smaller than 1D one. A more complex scanner is required to read this type of barcode.

What is the best barcode to use?

Different industries have standards of barcode types to use. For labeling products in retail EAN and UPC are used. Use ISBN, ISSN & Bookland for books and periodicals. Use UCC-128, EAN-128, or SSCC-18 for labeling shipping boxes. Note that the industry standard is not necessarily the same as the barcode symbology. ISBN and ISSN are industry standards that are based on EAN barcode symbology. UCC-128, EAN-128, and SSCC-18 use the Code 128 barcode. In general, if the items are to be scanned or sold via retail then the best barcode type to use would be the UPC or EAN barcodes. Consider also the amount of data that you require, if alphanumeric is required then Code 39 or code 128 is the best option. Also consider the size of the items you are barcoding and the system you will be using as 2D barcodes are much smaller but may not be supported by your system or that of your supply chain partners.

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