The QR code can encode upto 4, characters. QR codes can easily be created as a. Posters, catalogs, magazines, business cards, and even television screens display the small squares, offering additional information or URLs for microsites. The information encoded in the QR Codes can easily be accessed from the smartphones with the available free apps.
We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More. Primary Menu LinuxAndUbuntu. Our sponsor - Deploy your server within 3 minutes. Sohail Mohd Sohail is a web developer and a Linux sysAdmin. He also loves to write how-to articles, applications reviews and loves to use new Linux distributions.
Leave a Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment.Here is a list of best free open source QR code generator software for Windows. These software work just like other standard QR code generator software.HOW TO CREATE A QR CODE - [ INSTRUCTIONS 101]
However, all these software come with their source codes which you can easily download, study, and modify. The advantage of using these software is that none of them requires an active internet connection to generate a QR code.
In some of these software, you can adjust QR code parameters QR code size, border width, error correction level, etc. The process of generating a QR code in these software is pretty simple as you just need to enter the main data and hit the generate button. Apart from the main input data, some of these also let you include images and logos in your QR code. A few of these software also allow you to create codes in other symbologies like Barcode, Postnet, Telenet, etc.
Some of these software can be slightly difficult to set up as they need external software like Python, Node. To simplify the installation process, I have mentioned to install software in their description. In addition to that, you can also find steps to generate QR code in the description of these software. Zint Barcode Studio is my favorite software because it can generate various types of codes besides QR code. Plus, it lets you adjust various parameters of the QR code before actually generating a QR code.
QR Code Generator
Through this software, you can create codes in 50 different types of symbologies like Barcode, QR code, Postnet, Telepen, Pharmacode, and more.
Before generating a QR code, you can also adjust its size, modify error correction level, and its appearance foreground color, background color, border width, etc. It is one of the best free open source QR code generator software as it allows you to create and adjust various QR code properties. Plus, it can be used to generate various different types of codes to represent input data. It is also a portable software that you can directly use from a portable storage device.
Using this software, you can easily generate a QR code representing words and numbers. It also offers an error correction menu which is by default set at low value that you cannot change. It is a dedicated open source QR code generator through which you can easily generate a QR code using text input.
Through this software, you can generate both QR code and Barcodes. Plus, it also allows you to scan and extract information from a QR code by scanning a QR code using a Webcam.
Like some other similar software, it also allows you to adjust the QR code size width and height before generating a QR code. It is a good open source QR code generator software that allows you to create as well as extract information from a QR code. Using this software, you can generate a QR code for Text input numbers, alphabets, symbols, etc.
Before generating a QR code, this software lets you specify the error correction capability ECC level and size of QR code that you can increase up to level After generating a QR code, this software also shows time consumed in different activities for generating a QR code like time consumed till after RAW, till after filler, till finish, etc. It is another handy open source QR code generator software through which you generate QR codes using text input.
Through this software, you can generate QR code for various types of input like numeric, alphanumeric, kanji, multibyte characters emojietc. Plus, you can also input characters of different languages Chinese, Cyrillic, Greek, and Japanese to generate a QR code. In order to use this software, you need to download and install Node. After installing the Node. You can now generate QR code through this software.Looking for a two factor authentication code generator for Linux?
I use two-factor authentication everywhere I can, and currently get my second auth code from an app installed on my Android smartphone. Being able to get your second factor from your desktop and laptop makes for a far more seamless user experience. Instead of typing in a code, you can just copy and paste it from the desktop app. Authenticator is available to install from Flathub. This only requires a single click on Fedora, Linux Mint, and some other distress:.
You can also use the command line to install the app assuming you have added the Flathub repo by running this command:. Just open the app, set up the account, and use it to generate codes.
Do you use two-factor authentication? What app do you use to generate codes? Let us know in the comments. Tweet Share 0 Looking for a two factor authentication code generator for Linux? What is Two Factor Authentication? So why do I need a desktop app to generate a code? Think of it as a convenience rather than a necessity.
Instead of typing in a code, you can just copy and paste it from the desktop app Authenticator Brings 2-Factor Authentication to Linux Desktop A simple application that generates 2 factor authentication code, created for GNOME.
Try the free demo of the Online Barcode Label Generator to instantly print your labels.
Generate Free Barcodes Online
Version: 3. Log in. Generate one barcode per row. Start Value. End Value. Cancel Clear Today. Link to This Page Copy to Clipboard. Settings Settings Colors Advanced. Module Width. Image Resolution DPI. Barcode Color. Background Color. ISO 3 South Eur. ISO 4 North Eur. Quiet Zone. Symbol Size Default 8x18 - Rectangle 8x32 - Rectangle 8x48 - Rectangle 8x64 - Rectangle 8x80 - Rectangle 8x96 - Rectangle 8x - Rectangle 8x - Rectangle 10x10 12x12 12x26 - Rectangle 12x36 - Rectangle 12x64 - Rectangle 12x88 - Rectangle 14x14 16x16 16x36 - Rectangle 16x48 - Rectangle 16x64 - Rectangle 18x18 20x20 20x36 - Rectangle 20x44 - Rectangle 20x64 - Rectangle 22x22 22x40 - Rectangle 22x48 - Rectangle 24x24 24x32 - Rectangle 24x36 - Rectangle 24x48 - Rectangle 24x64 - Rectangle 26x26 26x32 - Rectangle 26x40 - Rectangle 26x48 - Rectangle 26x64 - Rectangle 32x32 36x36 40x40 44x44 48x48 52x52 64x64 72x72 80x80 88x88 96x96 x x x x Why Register?
This Barcode Generator is Free You may use this barcode generator as part of your non-commercial web-application or web-site to create dynamic barcodes with your own data.Edit and adjust your barcodes.
No special knowledge or programming skills are needed. It's fast and simple! Save the created barcodes for further use in image editing programs, forms or documents, or print them right away.
Create single barcodes or a series of barcodes by importing your bar-code data from external text or CSV files. Create eye-catching barcodes!
Embed your own logo or image into the barcode, change colors or add special effects to make your barcode unique. Our support team is happy to help you with all your questions and technical problems. For 2D bar codes please look at the next section. Choose one of the following 3 license types. Please note that the 2D license includes the 1D license. I even had the opportunity to do a laser print-out of the barcodes generated by Barcode Studio, and they scanned-in beautifully.
You guys have earned a long time customer to come [ Barcode Studio is the perfect tool for you. Convince yourself and test the barcode generator for free. Enter Data Edit and adjust your barcodes. Save or Print Barcodes and Labels Save the created barcodes for further use in image editing programs, forms or documents, or print them right away.
Your Benefits. Data Import Create single barcodes or a series of barcodes by importing your bar-code data from external text or CSV files. Special Effects Create eye-catching barcodes! Free Support Our support team is happy to help you with all your questions and technical problems. Which License Do I Need? Customer Testimonials J.With the right tools, you can create your own QR code squares with information you want to share on a business card, in a letter, or on your website.
Read errors of unreliable, one-dimensional bar codes often caused interruptions in industrial production, prompting companies like Toyota and its subsidiary Denso Wave to develop as early as a new code for acquiring stock data.
The new matrix bar code was designed to store more information than the traditional bar code and to stay legible, even if the label was dirty, wrinkled, or partially destroyed. The quick response code, or QR code, comprises a matrix of square dots instead of the usual lines. Measuring up to by dots, the QR code encodes up to 4, characters, compared with a bar code that encodes just Thanks to numerous free reader apps for smartphones, QR codes have gained in popularity in recent years.
Posters, catalogs, magazines, business cards, and even television screens display the small squares, offering additional information or URLs for microsites. If you want to encode your address into a QR code for a business card, you could try one of the many services on the Internet.
Fortunately, several QR code tools can help you avoid these problems in Linux. The quickest way to create a QR code is with the Qrencode command-line utility.
QR Code Generator Software
Any major distribution can install Qrencode via the package manager. The generated QR code ends up in the qrcode. If you have at least version 3. In the QR code image, the software creates a white border the width of one dot. This facilitates the process of deciphering the code for programs or the smartphone later on. If desirable, you can increase or decrease the edge with the -m parameter; in the following example the border width would be 10 code pixels:.
By default, Qrencode draws every black dot three by three pixels. The program creates a slightly smaller QR code with quite a wide margin with the following command:.
A white border appears around the QR code that is exactly 20 screen pixels wide 10 QR code dots in width, with each dot two pixels. If you are creating EPS images, the only parameter available is -m ; -s moves the entire QR code out of the image in this case. To control the resolution of PNGs further, use the -d parameter to define the dpi. Besides the specified data, the QR code contains additional error correction information.
If a portion of the image is damaged, it allows you to reconstruct the missing or illegible data. The more additional information the QR code contains, the more heavily damaged it can be without becoming useless. Increasing the error tolerance increases the size of the image because you need more black dots Figure 3. The QR code standard thus uses four levels of error correction: H level allows you to read all data if 30 percent of the QR code is destroyed, Q level if 25 percent is unreadable, and M level if just 15 percent is unintelligible.
At the lowest level, Lonly 7 percent of the data can be faulty. In Qrencode, the -l parameter selects the error correction level. The possible values are pretty much what you would expect: LMQand H.From Wikipedia : A QR code short for Quick Response is a specific matrix barcode or two-dimensional codereadable by dedicated QR barcode readers and camera phones.
The code consists of black modules arranged in a square pattern on a white background. The information encoded can be text, URL or other data. This GPL software is available in Debian, Ubuntu and Fedora repository, so just use your package manager to install it,for me this means aptitude install qrencode ubuntu Once you have installed the software generate a QR Code is trivial, just write:.
Note also the flag -s that specify the size of dot pixel. There is no GUI interface for qrencode but you can easily mix it with Zenity to create a quick interface that ask the parameters and create the image. This is an example with Zenity and qrencode, ask where to save and the name of the image, after that ask a text to be put in the qr code thanks to ubuntuforum.
Ok you now can create these nice QR Code, but what to do with them? After that put it in your security safe or in your Disaster Recovery site. You have on your computer some informations and you want to move them quickly to your smartphone.
Or you can use ZbarZBar is an open source software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. So you can use your Webcam to read the QR Code you produce, or the one that people send to you. Come nome file cicciolino. Come testo ho inserito: nel mezzo del cammin di nostra vita mi ritrovai per una selva oscura che la diritta via era smarrita. After days of searching, I just found one. The first one is the backend and the second one is the GUI frontend.
PS- If you want to thank me for digging this up, go buy yourself something on Amazon! Thank you. Get real, just more package unpacking problems. That Fedora 22 Software installer,works about the best of all of them, but still would not install this.
And it is so mind bending to get them unpacked to the correct directory, the readme does not even tell you were to unpack it,any more, that was the first line in the readme file, years ago, was were to install it. Now you will never see mention of the proper directory to unpack it to, any were in the readme file, at all, any more,why?.