{"@attributes":{"version":"2.0"},"channel":{"title":"Documentation \u2013 Barcode Generation Parameters for Barcode Types","link":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/barcode-type-specifics\/","description":"Recent content in Barcode Generation Parameters for Barcode Types on Documentation","generator":"Hugo -- gohugo.io","item":[{"title":"Nodejsjava: Supported Barcode Types","link":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/supported-barcode-types\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/supported-barcode-types\/","description":"\n \n \n

This article introduces general information about barcode types and describes their key properties along with providing sample barcode labels and code snippets to generate barcodes of different types.<\/p>\n

Overview<\/strong><\/h2>\n

A barcode is a graphical code composed of parallel lines and spaces of different widths or various figures combined in a visual pattern to encode data. After being generated and printed out, barcode labels get placed on scannable surfaces. Barcodes have been introduced as machine-readable tags to enable fast automatical information fetching from graphic data. A single barcode may correspond to approximately 25 characters for 1D types or 2,000 for 2D ones. The greater the number of characters to be encoded in a single barcode, the larger the generated barcode.<\/p>\n\n\n

\n\nIf you need any clarifications, feel free to reach out Aspose Technical Support<\/a>: ask your questions at Aspose.Barcode Forum<\/a> or contact Aspose Paid Support Helpdesk<\/a>.<\/em>\n<\/div>\n\n

Supported Barcode Types<\/strong><\/h3>\n

All types supported in Aspose.BarCode for Node.js via Java<\/strong><\/em> are listed below.<\/p>\n \n
<\/th><\/th> \n

Supported Barcode Types<\/b><\/p><\/th> \n<\/tr> \n

1D<\/th> \nNumerical Only<\/th> \nCode 11, Code 32, Codabar, DataBar Omnidirectional, DataBar Stacked Omnidirectional, DataBar Limited, DataBar Truncated, DataBar Stacked, EAN 13, EAN 14, EAN 8,\nIATA 2-of-5, Italian Post 25, Interleaved 2-of-5, ISBN, ISMN, ISSN, ITF 6, ITF 14, Matrix 2-of-5, MSI, OPC, Patch Code, Pharmacode, PZN, SSCC 14, SSCC 18, \nStandard 2-of-5, EAN 5, EAN 2, UPC-A, UPC-E, UpcaGs1DatabarCoupon\n<\/td> \n<\/tr> \n
Alpha-Numeric<\/th> \nCode 128, Code 39, Code 93, Code 16K, CodablockF, DataBar Expanded, DataBar Expanded Stacked, GS1 CodablockF, GS1 Code 128, VIN<\/td> \n <\/tr> \n
2D<\/th> \nQR Code, Micro QR Code, PDF417, Compact PDF417, Macro PDF417, Micro PDF417, Aztec Code, Data Matrix, DotCode, GS1 Data Matrix, GS1 QR Code, MaxiCode<\/td> \n <\/tr> \n
Postal<\/th> \nAustralia Post, AustralianPostParcel, Deutsche Post Identcode, Deutsche Post Leticode, Planet, Postnet, RM4SCC, SingaporePost, Swiss Post Parcel, USPS OneCode<\/td> \n <\/tr> \n<\/tr> \n<\/table>\n

Setting Barcode Type<\/strong><\/h2>\n

Aspose.BarCode for Node.js via Java<\/strong><\/em> supports nearly all widely used barcode types. In general, to generate a barcode image, it is necessary to create an instance of class BarcodeGenerator<\/em><\/a> with two main parameters to be initialized: data contents to be encoded using the setCodeText<\/em> method and the barcode type in the setBarcodeType<\/em> method. The setBarcodeType<\/em> method is used to define the type of generated barcodes. Developers can assign any options to the setBarcodeType<\/em> property from the list of predefined barcode types supported by class BarcodeGenerator<\/em><\/a>. However, not all types enable barcode generation with input text in a required format due to the limitations of a barcode type itself.<\/p>\n

Below, two barcode types, Code 39<\/em> and QR Code<\/em>, are considered as examples to demonstrate how to generate barcodes.<\/p>\n

Code 39<\/strong>
\nCode 39<\/em> is a barcode type with variable length. Its specification is limited to 43 characters, including uppercase letters (A-Z), numerical digits, and some special characters (-, ., $, \/, +, %, and space). Each character is decoded by nine elements: five bars and four spaces. This type has low data density and does not allow ensuring recognition accuracy as it does not require setting an obligatory checksum by default.<\/p>\n

<\/p>\n

QR Code<\/strong>
\nQR Code<\/em> is a 2D type that is used to encode long strings of alphanumeric data, typically text or URL. A QR Code<\/em> label is composed of an array of black and white squares that can be recognized by smartphones and other readers. The QR Code<\/em> type provides high data encoding density. Moreover, it supports the Reed-Solomon<\/strong> error correction that allows not only to restore corrupted data but also to ensure correct information decoding.<\/p>\n

<\/p>\n

Data Encoding Formats<\/strong><\/h2>\n

<\/a><\/p>\n

Different types have different underlying data encoding approaches and capabilities. Accordingly, barcode label size and the amount of data to be encoded are predefined for each type. Some barcode types allow encoding only digits or a limited set of characters and digits, while others can accept any byte sequence without limitations.
\nFurther in the article, several barcode types (EAN 13<\/em>, Code 11<\/em>, GS1 Code 128<\/em>, and PDF417<\/em>) with different data densities are presented as examples.<\/p>\n

EAN 13<\/strong>
\nEAN 13<\/em> barcodes can encode only numerical digits. Specifically, the EAN 13<\/em> data encoding format requires encoding precisely 12 digits with the 13th one used as a control sum calculated according to the specified algorithm.<\/p>\n

<\/p>\n

PDF417<\/strong>
\nThe PDF417<\/em> barcode is a 2D high-density type that is capable of encoding any sequence of bytes, including text, numbers, files, and actual data bytes. It supports the Reed-Solomon error correction and thus provides high recognition accuracy.<\/p>\n

<\/p>\n

GS1 Code 128<\/strong>
\nGS1 Code 128<\/em> can encode any of ASCII alphanumeric characters similarly to the basic Code 128<\/em> type. However, in GS1 Code 128<\/em>, the data encoding format is defined strictly according to the GS1 standards.<\/p>\n

<\/p>\n

Code 11<\/strong>
\nCode 11<\/em> allows encoding a string of any length (theoretically, unlimited), including numerical digits and the dash sign (-).<\/p>\n

<\/p> \n

Barcode Shapes<\/strong><\/h2>\n

<\/a>\nIn general, the surfaces to place printed barcodes can have various shapes. At the same time, barcodes can be of rectangular or square forms only. Accordingly, if there is a large space to put a rectangular barcode, the generation of a square-shaped barcode is unacceptable from the viewpoint of space usage.
\nFurther, two barcode types, Micro QR Code<\/em> and Compact PDF417<\/em>, are considered as examples of barcodes with different shapes.<\/p>\n

Micro QR Code<\/strong>
\nMicro QR Code<\/em> provides large data density; however, it has a square shape and thus needs square space to be placed. A major feature of MicroQR<\/em> is that it has only one position detection pattern instead of three ones for regular QR Code<\/em> and requires a more compact placement area.<\/p>\n

<\/p>\n

Compact PDF417<\/strong>
\nCompact PDF417<\/em> can be used when space limitations are the main concern and barcode damage is unlikely. It has less data density compared with other 2D barcodes; however, owing to its property to have a length 64 times larger than height, it is more suitable for narrow rectangular areas with size limitations.<\/p>\n

<\/p>\n

Data Density<\/strong><\/h2>\n

<\/a>\nData density is one of the most important properties of barcode types. It defines how much information can be encoded in a single barcode. It is low for 1D barcodes and considerably high for 2D matrix barcode types. The difference in data density for 2D and 1D types can exceed 10 times.\nThe barcode types discussed below, Code93<\/em> and Data Matrix<\/em>, are provided as examples of barcode types with different density values.<\/p>\n

Code 93<\/strong>
\nCode 93<\/em> is a more secure and compact version of Code 39<\/em> that can encode both alphabet characters and numerical digits. Code 93<\/em> has quite low data density; therefore, with respect to other types, it requires generating larger barcodes to encode the same amounts of information.<\/p>\n

<\/p>\n

Data Matrix<\/strong>
\nData Matrix<\/em> is a 2D code that allows encoding large amounts of data in a compact space. A single Data Matrix<\/em> can contain up to 2,335 alphanumeric or 3,116 numerical characters. This is 10 times greater than the standard data density of 1D barcodes.<\/p>\n

<\/p> \n

Barcode Reading Accuracy<\/strong><\/h2>\n

<\/a>\nIn some cases, the data fetched after barcode recognition may be incorrect. Generally, 1D barcodes do not include a checksum or contain only simple controls; accordingly, this may result in reading erroneous data from barcodes. In turn, the majority of 2D barcodes rely on the Reed-Solomon error correction, which allows ensuring correct barcode recognition and partially recovering the data from damaged barcodes.
\nThe types outlined below, Interleaved 2-of-5<\/em> and Aztec Code<\/em>, are considered as examples of barcode types with different recognition accuracy.<\/p>\n

Aztec Code<\/strong>
\nAztec Code<\/em> is a highly efficient 2D type that uses square modules with a unique finder pattern in the middle of a barcode, which allows barcode scanners to identify cell locations required for barcode reading. This barcode type not only enables encoding any sequence of bytes but also ensures correct data recognition.<\/p>\n

<\/p>\n

Interleaved 2-of-5<\/strong>
\nInterleaved 2-of-5<\/em> can encode sequences of digits of any length as long as such a sequence contains an even number of digits. By default, it does not require setting a checksum and thus can be read with errors.<\/p>\n

<\/p>\n

Postal Barcodes<\/strong><\/h2>\n

Postal symbologies correspond to the specific industrial barcode types that are used only for the needs of postal services. They have much lower data density compared with 2D barcodes and are capable of encoding limited sets of characters, mainly, only numerical ones. Unlike traditional barcodes, postal types usually vary the height of bars to encode information. Aspose.Barcode for Node.js via Java<\/strong><\/em> supports the most widely used postal types in addition to 1D and 2D ones.<\/p>\n

RM4SCC<\/strong>
\nRM4SCC<\/em> is capable of encoding only digits and English alphabet capital characters. Its parameters are similar to those of 1D barcodes. In this barcode type, each character corresponds to four bars so that two of them are extended upwards and the other two - downwards. The combination of such bars with variable height provides combinations to encode 36 possible characters: 10 numerical and 26 alphabetical ones.<\/p>\n

<\/p>\n

Postnet<\/strong>
\nPostnet<\/em> allows encoding only digits corresponding to ZIP or ZIP+4 codes in half- and full-height bars; its parameters are similar to those of 1D barcodes. In this barcode type, each digit is encoded by a set of five bars, two of which are of full height.\nTwo type considered below, Postnet<\/em> and RM4SCC<\/em>, are provided as examples of postal barcodes.<\/p>\n

<\/p>\n\n "},{"title":"Nodejsjava: Set Parameters for 1D Barcode Types","link":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/set-barcode-parameters\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/set-barcode-parameters\/","description":"\n \n \n

Overview<\/strong><\/h2>\n

Aspose.BarCode for Node.js via Java<\/strong><\/em> enables customizing various parameters that are specific for 1D barcode generation. Particularly for 1D barcode standards, developers can adjust the following display properties: the height of bars, the mode of bar filling, the wide-to-narrow ratio, and the automatic correction of invalid barcode text.
\nThis article describes how to manage these properties using specified classes and properties of the library.<\/p>\n\n\n

\n\nIf you need any clarifications, feel free to reach out Aspose Technical Support<\/a>: ask your questions at Aspose.Barcode Forum<\/a> or contact Aspose Paid Support Helpdesk<\/a>.<\/em>\n<\/div>\n\n

Set Bar Height<\/strong><\/h2>\n

It is possible to modify the height of bars for 1D single-row barcodes by setting AutoSizeMode<\/em><\/a> to AutoSizeMode.NONE<\/em>. In this case, regardless of the value specified through the setXDimension<\/em> method, the bar height can be regulated using the setBarHeight<\/em> method of class BarcodeParameters<\/em><\/a>. This method does not apply to multiple-row barcodes and 2D barcodes.<\/p>\n\n\n\n\n\n
Bar Height<\/th>\nIs Set to 40 Pixels<\/th>\nIs Set to 80 Pixels<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\/\/This sample shows how to create and save a barcode image\n<\/span><\/span><\/span><\/span> let<\/span> generator<\/span> =<\/span> new<\/span> BarcodeGenerator<\/span>(<\/span>EncodeTypes<\/span>.<\/span>CODE_128<\/span>);<\/span>\n<\/span><\/span> generator<\/span>.<\/span>setAutoSizeMode<\/span>(<\/span>AutoSizeMode<\/span>.<\/span>NEAREST<\/span>);<\/span>\n<\/span><\/span> generator<\/span>.<\/span>getBarCodeWidth<\/span>().<\/span>setMillimeters<\/span>(<\/span>50<\/span>);<\/span>\n<\/span><\/span> generator<\/span>.<\/span>getBarCodeHeight<\/span>().<\/span>setInches<\/span>(<\/span>1<\/span>.<\/span>3f<\/span>);<\/span>\n<\/span><\/span> generator<\/span>.<\/span>save<\/span>(<\/span>"test.png"<\/span>,<\/span> BarcodeImageFormat<\/span>.<\/span>PNG<\/span>);<\/span>\n<\/span><\/span><\/code><\/pre><\/div>
Set Wide-to-Narrow Ratio<\/strong><\/h2>\n
Two-width 1D barcodes are based on the binary code principle, meaning that information is encoded using bars and spaces with two options of width: wide and narrow. Two-width barcode symbologies include the following: Codabar<\/em>, Code 11<\/em>, Code 32<\/em>, Code 39<\/em>, DataLogic 2-of-5<\/em>, IATA 2-of-5<\/em>, Interleaved 2-of-5<\/em>, ITF 6<\/em>, ITF 14<\/em>, Matrix 2-of-5<\/em>, MSI<\/em>, OPC<\/em>, PZN<\/em>, Standard 2-of-5<\/em>, and VIN<\/em>.<\/p>\n
In Aspose.BarCode for Node.js via Java<\/strong><\/em>, the wide-to-narrow ratio<\/strong> defines the relation between the width of wide and narrow elements. It can be set using the setWideNarrowRatio<\/em> method of class BarcodeParameters<\/em><\/a>. The larger if the value of the wide-to-narrow ratio, the larger is the width of the generated barcode. However, the readability also improves with an increase in this parameter. By default, WideNarrowRatio<\/em> is set to 3.<\/p>\n\n\n\n\n\n
Wide-to-Narrow Ratio<\/th>\nIs Set to 2<\/th>\nIs Set to 5<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Handle Exception on Incorrect Barcode Text<\/strong><\/h2>\n
When a barcode has not been created correctly due to invalid barcode text, by default, the library can generate additional dummy data to bring the barcode in line with the standard or delete conflicting characters. In this case, barcode generation is considered successfully completed.<\/p>\n
Developers can change this behaviour by using the setThrowExceptionWhenCodeTextIncorrect<\/em> method of BarcodeParameters<\/em><\/a>. When this method is called, an exception is thrown if the barcode text has been found incorrect or incomplete.<\/p>\n\n\n\n\n\n
Barcode Text Correctness<\/th>\nCorrect with Valid Barcode Text<\/th>\nAdjusted with Invalid Barcode Text<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Bar Filling Modes<\/strong><\/h2>\n
For 1D barcodes, Aspose.BarCode for Node.js via Java<\/strong><\/em> provides a specific mode to generate barcodes with empty bars instead of filled ones. Such a modification can be done using the setFilledBars<\/em> method of class BarcodeParameters<\/em><\/a>. This property is set to True<\/em> by default and is valid only for 1D barcodes.<\/p>\n\n\n\n\n\n
Bar Filling<\/th>\nFilled<\/th>\nEmpty<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n      "},{"title":"Nodejsjava: Generate QR Code and Micro QR Code","link":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/generate-qr-code\/","pubDate":"Mon, 01 Jan 0001 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/barcode\/nodejsjava\/generate-qr-code\/","description":"\n        \n        \n        \n\n
\n\nGenerate QR Code Online<\/a>: You can test the quality of Aspose.BarCode<\/strong><\/em> generation for QR Codes and get results.\n<\/div>\n\n
Overview<\/strong><\/h2>\n
QR Code<\/em> corresponds to a group of 2D square types that benefits from high data density and allows encoding streams of bytes and textual data composed of using Unicode symbols. Aspose.BarCode for Node.js via Java<\/strong><\/em> supports Extended Channel Interpretation (ECI) to encode Unicode data and provides various encoding modes; UTF8 is one of the most widely used encoding mode.<\/p>\n
Reserving the minimum possible amount of data for error correction, the QR Code<\/em> standard can be used to encode at most 7,089 numerical digits or 4,296 alphanumeric characters or 2,953 bytes. The other standard, Micro QR Code<\/em>, allows encoding up to 35 numerical digits or 21 alphanumeric characters or 15 bytes. Micro QR Code<\/em> serves to create considerably small QR Code<\/em> images. However, it does not enable Extended Channel Interpretation (ECI) and does not allow encoding Unicode characters. Micro Qr Code<\/em> barcodes corresponding to the M1<\/em> version can encode at most five numerical digits; the M2<\/em> version allows encoding up to ten numericals or six alphanumeric characters. This encoding capacity is usually suitable to work with industrial markers.<\/p>\n
Main advantages of QR Code<\/em> can be outlined as follows:<\/p>\n