What is a Bar Code?

A bar code (often seen as a single word, barcode) is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location. The code uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.

An early use of one type of barcode in an industrial context was sponsored by the Association of American Railroads in the late 1960s. Developed by General Telephone and Electronics (GTE) and called KarTrak ACI (Automatic Car Identification), this scheme involved placing colored stripes in various combinations on steel plates which were affixed to the sides of railroad rolling stock. Two plates were used per car, one on each side, with the arrangement of the colored stripes encoding information such as ownership, type of equipment, and identification number.[1] The plates were read by a trackside scanner, located for instance, at the entrance to a classification yard, while the car was moving past.[2] The project was abandoned after about ten years because the system proved unreliable after long-term use.

Barcodes became commercially successful when they were used to automate supermarket checkout systems, a task for which they have become almost universal. Their use has spread to many other tasks that are generically referred to as automatic identification and data capture (AIDC). The very first scanning of the now ubiquitous Universal Product Code (UPC) barcode was on a pack of Wrigley Company chewing gum in June 1974.

Types of barcodes

AusPost 4 State Customer Code
Aztec Code
Aztec Runes
Channel Code
Codablock F
Code 11
Code 128
Code 16K
Code 25
Code 39
Code 39 Extended
Code 49
Code 93
Code 93 Extended
Code One
Compact Aztec Code
Compact PDF417
COOP 2 of 5
Custom 1D symbology
Custom 4 state symbology
Data Matrix
Datalogic 2 of 5
Deutsche Post Identcode
Deutsche Post Leitcode
EAN-13 Composite
EAN-2 (2 digit addon)
EAN-5 (5 digit addon)
EAN-8 Composite
GS1 Composite 2D Component
GS1 Data Matrix
GS1 DataBar Expanded
GS1 DataBar Expanded Composite
GS1 DataBar Expanded Stacked
GS1 DataBar Expanded Stacked Composite
GS1 DataBar Limited
GS1 DataBar Limited Composite
GS1 DataBar Omnidirectional
GS1 DataBar Omnidirectional Composite
GS1 DataBar Stacked
GS1 DataBar Stacked Composite
GS1 DataBar Stacked Omnidirectional
GS1 DataBar Stacked Omnidirectional Composite
GS1 DataBar Truncated
GS1 DataBar Truncated Composite
GS1 QR Code
GS1-128 Composite
HIBC Codablock F
HIBC Code 128
HIBC Code 39
HIBC Data Matrix
HIBC MicroPDF417
IATA 2 of 5
Industrial 2 of 5
Interleaved 2 of 5 (ITF)
Italian Pharmacode
Japan Post 4 State Customer Code
Matrix 2 of 5
Micro QR Code
Miscellaneous symbols
MSI Modified Plessey
Pharmaceutical Binary Code
Pharmazentralnummer (PZN)
Plessey UK
QR Code
Royal Dutch TPG Post KIX
Royal Mail 4 State Customer Code
Telepen Numeric
Two-track Pharmacode
UPC-A Composite
UPC-E Composite
USPS Intelligent Mail
barcode Generator home
barcode Generator
batch Barcode Generator
Bar Code
Online Bar Code
Online Bar Code Generator
Free Bar Code Generator
Cloud Bar Code Generator
Bar Code Android Generator
BarCode Google Generator
BarCode App Generator
BarCode iPhone Generator
BarCode Scanner
BarCode Reader
Bar Generator
Scan Bar Code
Android Bar Code
Bar Code Scan
Bar Code Reader
The Bar Code
A Bar Code
Bar Code Scanner
Free Bar Code
Bar Code App
Google Bar Code
auspost 4 state customer code
aztec code
aztec runes
channel code
codablock f
code 11
code 128
code 16k
code 25
code 39
code 39 extended
code 49
code 93
code 93 extended
code one
compact aztec code
compact pdf417
coop 2 of 5
custom 1d symbology
custom 4 state symbology
data matrix
datalogic 2 of 5
deutsche post identcode
deutsche post leitcode
ean 13
ean 13 composite
ean 2 2 digit addon
ean 5 5 digit addon
ean 8
ean 8 composite
gs1 composite 2d component
gs1 data matrix
gs1 databar expanded
gs1 databar expanded composite
gs1 databar expanded stacked
gs1 databar expanded stacked composite
gs1 databar limited
gs1 databar limited composite
gs1 databar omnidirectional
gs1 databar omnidirectional composite
gs1 databar stacked
gs1 databar stacked composite
gs1 databar stacked omnidirectional
gs1 databar stacked omnidirectional composite
gs1 databar truncated
gs1 databar truncated composite
gs1 qr code
gs1 128
gs1 128 composite
gs1 14
hibc codablock f
hibc code 128
hibc code 39
hibc data matrix
hibc micropdf417
hibc pdf417
hibc qr code
iata 2 of 5
industrial 2 of 5
interleaved 2 of 5 itf
italian pharmacode
itf 14
japan post 4 state customer code
matrix 2 of 5
micro qr code
miscellaneous symbols
msi modified plessey
pharmaceutical binary code
pharmazentralnummer pzn
plessey uk
qr code
royal dutch tpg post kix
royal mail 4 state customer code
sscc 18
telepen numeric
two track pharmacode
upc a
upc a composite
upc e
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usps intelligent mail
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usps postnet
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aztec code Generator
aztec runes Generator
bc412 Generator
channel code Generator
codabar Generator
codablock f Generator
code 11 Generator
code 128 Generator
code 16k Generator
code 25 Generator
code 39 Generator
code 39 extended Generator
code 49 Generator
code 93 Generator
code 93 extended Generator
code one Generator
compact aztec code Generator
compact pdf417 Generator
coop 2 of 5 Generator
custom 1d symbology Generator
custom 4 state symbology Generator
data matrix Generator
datalogic 2 of 5 Generator
deutsche post identcode Generator
deutsche post leitcode Generator
ean 13 Generator
ean 13 composite Generator
ean 2 2 digit addon Generator
ean 5 5 digit addon Generator
ean 8 Generator
ean 8 composite Generator
flattermarken Generator
gs1 composite 2d component Generator
gs1 data matrix Generator
gs1 databar expanded Generator
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gs1 128 Generator
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gs1 14 Generator
hibc codablock f Generator
hibc code 128 Generator
hibc code 39 Generator
hibc data matrix Generator
hibc micropdf417 Generator
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hibc qr code Generator
iata 2 of 5 Generator
industrial 2 of 5 Generator
interleaved 2 of 5 itf Generator
isbn Generator
ismn Generator
issn Generator
italian pharmacode Generator
itf 14 Generator
japan post 4 state customer code Generator
matrix 2 of 5 Generator
maxicode Generator
micro qr code Generator
micropdf417 Generator
miscellaneous symbols Generator
msi modified plessey Generator
pdf417 Generator
pharmaceutical binary code Generator
pharmazentralnummer pzn Generator
plessey uk Generator
posicode Generator
qr code Generator
royal dutch tpg post kix Generator
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sscc 18 Generator
telepen Generator
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two track pharmacode Generator
upc a Generator
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usps intelligent mail Generator
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ean13 Generator
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flattermarken Generator
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What size does a BarCode have to be?

Generally speaking, the larger the BarCode, the easier it is for it to be scanned, however most BarCode reading devices are able to scan images that are small enough to fit on a business card for example. This of course assumes that the quality of image is good.

BarCode File Formats

You can use the following file formats when creating a BarCode::
PNG file
JPG file
PDF file
PNG files work particularly well as they can be resized very easily, meaning that you can easily scale the QR Code depending on where you want to put it.