2d-doc Generator
Dinah Lianes
This online barcode generator demonstrates the capabilities of the TBarCode SDK barcode components. TBarCode simplifies bar code creation in your application - e.g. in C# .NET, VB .NET, Microsoft ASP.NET, ASP, PHP, Delphi and other programming languages. Test this online barcode-generator without any software installation (Terms of Service) and generate your barcodes right now: EAN, UPC, GS1 DataBar, Code-128, QR Code, Data Matrix, PDF417, Postal Codes, ISBN, etc.
You may use this barcode generator as part of your non-commercial web-application or web-site to create barcodes, QR codes and other 2D codes with your own data. In return, we ask you to implement a back-link with the text "TEC-IT Barcode Generator" on your web-site. Back-linking to www.tec-it.com is highly appreciated, the use of TEC-IT logos is optional.
Our company offers standard software like TFORMer, TBarCode and Barcode Studio. Universal data acquisition tools like TWedge or Scan-IT to Office, an Android/iOS app for mobile data collection, complete our portfolio. Custom solutions are available on request.
This page is very popular and because of that, it gets an incredible amount of comment spam. Sometimes legitimate comments can get caught as spam and I can miss them, so if your comment does not appear after some time, you can contact me from the email address on my contact page.
QR Code is far more widespread than Data Matrix, Aztec Code or Micro QR Code. Actually Micro QR Code is rarely used and is only given here as a technology preview. If you want to create a campaign for your products using a 2D Code, make sure that you are using QR Codes, not the other types.
Data Matrix and Aztec Code have significantly lower capacity (4096 alphanumeric characters for QR Code, 3067 for Aztec Code and 2335 for Data Matrix), so if you would like to encode a lot of text, select QR Code.
If your device cannot interpret the encoded 2D Code properly, it probably means your scanner program is written poorly or does not have the capability of decoding that particular code format; or your device does not accept that action, because all codes created by this script and the content within them are compliant to all necessary published standards (vCard standards, URL encoding schemes, NTT DoCoMo standards, etc.).
Data Matrix, Aztec Code and Micro QR Code do not support characters other than ASCII because of their spec, so if your input has international characters, always use QR Code. Another caveat of Micro QR Code is that, it is not supported by most of the scanner programs out there. As for Kanji and Cyrillic characters, again, only QR Code should support them.
Always use dark colors for foreground color and light colors for background color. If there is not enough contrast between foreground and background colors, your device will most probably fail to decode the code. Another warning: The EPS version I had to use does not support transparency, so you should use another format if you are going to have transparent foreground or background in your codes.
Twitter Profile Image Overlay option overlays your Twitter profile image onto a code that includes your Twitter profile URL. Images created with this option will behave very oddly with vector image formats. You have been warned! ?
You can change the block size of the generated image to make it bigger or smaller. Also, you can change the margin size of the image to add more quiet zone if your decoder cannot decode it (Especially Data Matrix seems to need bigger margin sizes). Error correction level for QR Code (ignored for other code types) can be set to 4 different values and higher values may cause the image to be decoded slightly slower. The 4 values can be explained like this:
A note about printing from Roy, a fellow user of this generator: When codes are generated, they are created in RGB (my note: yes even if they are black and white, they are in RGB colorspace) and if they are used in printing, they should be converted to grayscale or CMYK so that, when printed, only the black plate is used. This ensures the highest edge resolution, particularly in smaller sizes.
The best scanner apps for iPhone and iPad are Qrafter and Qrafter Pro. They are available on the App Store. They are designed for both iPhone and iPad and Qrafter is free with advertisements, while Qrafter Pro is paid with no advertisements. They are able to understand all actions on this generator (and more) and are the most advanced scanners for QR Codes on iPhone and iPad.
Q: Can I change the content of a code I created if I find a mistake?
A: The codes generated on this generator are standalone, which means they have no connection to this generator after being generated. This also means they include the content directly inside them, and if the content needs to change, the generated code image will change. Please test your code images with as many devices and scanner apps as possible to avoid any problems after printing the codes.
Q: Why do I get unwanted characters like a backslash (\) or semicolon (;) in the result when I scan a QR Code?
A: You are using a QR Code reader that cannot parse the contents of QR Codes correctly. Many readers are especially weak at parsing vCards. Use a proper app from the QR Code Scanners list on this page.
Q: Can I use the codes I create on this generator commercially? Do I need to pay any fees?
A: You can use the codes created on this generator both commercially and personally. There are no fees to pay. The only favor I ask back is the promotion of Qrafter or Qrafter Pro on your site as your recommended reader app for iOS devices. But it is only a request, you are not obliged to do that. ?
We have used your services to create a test QR code for a campaign. Unfortunately, this test QR code has now ended up on the print file and redirects to the wrong website. Now the printed material has arrived and there is no way back. Is there any way to change the stored URL?
I think I found this page back when it was brand new, I have QR codes on my business cards from back then that still work to this day.
Thank you so much for maintaining this and keeping it free! It is an invaluable tool, and I recommend it to all of my customers who need QR codes.
Julia, like most technical computing languages, provides a first-class array implementation. Most technical computing languages pay a lot of attention to their array implementation at the expense of other containers. Julia does not treat arrays in any special way. The array library is implemented almost completely in Julia itself, and derives its performance from the compiler, just like any other code written in Julia. As such, it's also possible to define custom array types by inheriting from AbstractArray. See the manual section on the AbstractArray interface for more details on implementing a custom array type.
An array is a collection of objects stored in a multi-dimensional grid. Zero-dimensional arrays are allowed, see this FAQ entry. In the most general case, an array may contain objects of type Any. For most computational purposes, arrays should contain objects of a more specific type, such as Float64 or Int32.
In general, unlike many other technical computing languages, Julia does not expect programs to be written in a vectorized style for performance. Julia's compiler uses type inference and generates optimized code for scalar array indexing, allowing programs to be written in a style that is convenient and readable, without sacrificing performance, and using less memory at times.
In Julia, all arguments to functions are passed by sharing (i.e. by pointers). Some technical computing languages pass arrays by value, and while this prevents accidental modification by callees of a value in the caller, it makes avoiding unwanted copying of arrays difficult. By convention, a function name ending with a ! indicates that it will mutate or destroy the value of one or more of its arguments (compare, for example, sort and sort!). Callees must make explicit copies to ensure that they don't modify inputs that they don't intend to change. Many non-mutating functions are implemented by calling a function of the same name with an added ! at the end on an explicit copy of the input, and returning that copy.
Many functions for constructing and initializing arrays are provided. In the following list of such functions, calls with a dims... argument can either take a single tuple of dimension sizes or a series of dimension sizes passed as a variable number of arguments. Most of these functions also accept a first input T, which is the element type of the array. If the type T is omitted it will default to Float64.
If the arguments inside the square brackets are separated by single semicolons (;) or newlines instead of commas, then their contents are vertically concatenated together instead of the arguments being used as elements themselves.
Spaces (and tabs) have a higher precedence than semicolons, performing any horizontal concatenations first and then concatenating the result. Using double semicolons for the horizontal concatenation, on the other hand, performs any vertical concatenations before horizontally concatenating the result.
Just as ; and ;; concatenate in the first and second dimension, using more semicolons extends this same general scheme. The number of semicolons in the separator specifies the particular dimension, so ;;; concatenates in the third dimension, ;;;; in the 4th, and so on. Fewer semicolons take precedence, so the lower dimensions are generally concatenated first.
Like before, spaces (and tabs) for horizontal concatenation have a higher precedence than any number of semicolons. Thus, higher-dimensional arrays can also be written by specifying their rows first, with their elements textually arranged in a manner similar to their layout: