I am looking for a Tikz QR code generator. I am aware of pst-barcode as well as several "local" programs, a luatex solution and web services to do this. Nevertheless, if at all possible, I would much prefer a Tikz replacement working with pdflatex/xelatex as well, since this is the most common baseline at the moment. If this doesn't yet exist, I would be willing to award a bounty on the creation of one. However I will wait until someone expresses interest in doing so, since I am not sure how long this might take.
The compilation of the main document took more time than I expected (a few seconds) but the bottleneck is not Lua, but tikz. The lua code generates a lot of small rectangles to be filled, and tikz requires time to draw all of them (I replaced the tikz-generation code in lua for simple "print" statements to the console, and it compiled almost instantaneously).
Trying to reduce the compile-time, I modified the lua code so that only the black pixels are actually drawn, thus reducing the compile time to the half (in my first implementation Lua generated both the black and the white pixels).
The compiling time can be dramatically improved if, instead of using tikz to draw the pixels, tex \rule primitive is used, as in this answer which basically does the same thing than my code, but without tikz (thanks to michal.h21 for pointing me to his answer).
Inspection of library luaqrcode shows that the QR algorithmm is rather complex. Although a lot of values are precomputed and stored in tables, which would simplify a pure tex implementation, I'm concerned for the performance of that implementation.
The uses of QR codes are as wide and varied as your imagination and are regularly used in sales, marketing, advertising, education, business and technical communication, asset management, and event management, with QR codes being added to brochures, signage, documents, packaging, and products.
There's not enough room or time to go into all the details, but we do have a few examples here, and we've also selected some videos that will get you started with understanding what QR codes can do and how they can be used.
No. The QR codes (and any underlying short URLs) created by both free users and paid subscribers are permanent and will continue to function indefinitely, however temporary scan limits may apply as outlined below.
Yes. Discounted subscription pricing is available on request for primary, secondary and tertiary educational institutions and accredited education providers (HLC, IACET, etc) using QR codes for educational purposes, and for not-for-profit organizations (federal 501 or 503 tax-exempt, or similar at a state level). In the case of not-for-profits, confirmation of not-for-profit status will be required.
Storing up to 4296 characters they are internationally standardised under ISO 18004, so a QR code is a QR code all over the world - they've been big in Japan forever, broke into Europe and the UK a few years back, and are now popular in North America.
Our QR Code Generator is FREE for anyone to use with no sign-up or account required - fully functional, 100% ad-free, permanent QR codes that don't expire. Generate as many QR codes as you need for FREE with no restrictions on commercial use. No time limits, just free QR codes you can use with confidence straight away.
Free users can access 23 of our 30 QR code data types (PDF, Image and Attendance Tracking require a paid subscription). Websites, YouTube, Google Maps? Meh! Everyone gives you those, but our free users can create fully functional non-expiring QR codes for App Store Downloads, Dropbox file sharing, SMS and email messages, Bitcoin, Paypal and more. And you can create as many of them as you like.
Our QR codes are guaranteed 100% ad-free, even for free users, so you can get on with promoting your product without someone else's brand getting in the way. By the way, if you do see an ad after scanning one of our QR codes, the scanning app that you're using put it there.
Generate your own QR Code and then you and your code are sent to the Zazzle print-on-demand website to add your QR code to a t-shirt, a coffee cup, a hat, business cards, stickers, and more - all ready for immediate purchase, printing and delivery direct to your door.
Enhance your Miro boards with the power of QR codes. Our QR Code Generator makes it simple to create, and embed QR codes directly within your collaborative workspace, offering a seamless integration between physical and digital interactions.
A QR code (short for quick-response code) is a sort of two dimensional barcode. They were invented in 1994 by the Japanese company Denso Wave to label car parts. Like barcodes they are a machine readable optical image that can contain information.
To determine the mode examine the input data and see which is the simplest mode that can encode it. My approach to this is to use Test Driven Development (TDD). I define a test for each mode and some invalid cases then write a function to determine the mode, stopping when all the tests pass.
Once the preceding step has been completed, you need to determine the full bit string to use. This is the combination of the mode, character count and data bit strings. The specification requires that the bit string fills the full capacity of the QR code so you will need to pad the bit string if it does not.
In this step your goal is to determine which data mask should be applied. The data mask changes which entries in the array are dark and which are light. The purpose of this is to modify the QR code to make it as easy for a QR code reader to scan as possible.
Essentially for this step you want add a quiet zone of 4 array elements all around the data array, these would all be set to zero. When you render the QR code, elements in the array that are set to 1 will be rendered as black squares and zeros as white squares.
There are many different QR code categories and types so it is important to know what kind of code one should choose for different uses. It isn't complicated to decide on and since QR codes are so versatile and many are editable, it will only take a few minutes to create and design the perfect code.
Creating a QR code is easy and just takes a few minutes but if you want a more in-depth view of how it works with design tools, then this guide is for you. Also, please download our free 50 Dos and Don'ts Guide for some thoughtful details on design, marketing, placement, and more.
A WhatsApp QR code will open WhatsApp on phones when scanned so that customers from all over the world can message you with the ease and convenience of not having a local number, or for locals that use the service on WiFi without using phone data with SMS text messaging.
WhatsApp codes are great for any business that encourages their customers to connect with them through a personal communication channel. Some of the great use examples could be but aren't limited to:
Take a look at our checklist to make sure that generating a WhatsApp QR code is the best option for how you enable others to connect with you. If you answer YES to all of the following questions then you should continue creating a WhatsApp QR code:
If you answered NO to any of the questions above, you may consider choosing a different type of QR code to enable others to reach out to you as there are many different options for how you could start two-way conversations with them.
In this scenario, we're going to create a WhatsApp QR code for our restaurant so people can make reservations and anything else they decide to reach out for. When adding the recipient phone number, add a + sign at the beginning and do not leave spaces in between the numbers. Add some predefined text that customers can edit later on, then name your code and put it in a folder of your choice. Since these codes are dynamic you can modify the content at any time. Now click, "Next".
Now we are in the design tool. Under the "code" toggle you can add customizable colors or use a pick color dropper from an outside extension to grab branded colors from your company's website to design your code. We've just personalized colors here for a fictitious cafe. Use the basic edge feature to make three alike edges or use the advanced feature to make three different edges. Please use contrasting colors so the code scans well. When you're finished click the "frame" toggle directly to design the next part. Don't click Save until you're finished with the three toggles. If you do it will take you to the Supercode dashboard as finished but you can always modify the design later if you accidentally click Save.
In the last toggle we have chosen to upload a WhatsApp logo so people are inspired to scan and text us there. You can also add a company logo for brand recognition since your message already states this is a WhatsApp code. Or choose an emoji or leave blank if you prefer. When you're done with your design click, "Save" and you will arrive back in the Supercode dashboard.
An image QR code is a dynamic code that when scanned will display a palette with images, a button that links to an external URL source, and a web address all in one place. The code is editable since it's dynamic meaning you can change where you want the button to route to, update your web address, or even just swap out your images to show your latest work.
Image QR codes are amazing for getting something extra out of a QR code. Display images of your work like a photo gallery and inspire customers to request a demo, book an appointment, connect with you, make a purchase from a m-commerce store, or more, with a customizable button addition to the palette that appears when the QR code is scanned. With an additional link to your website, your audience has the choice of seeing more of your products and services. These codes are fantastic for but not limited to:
Take a look at our checklist to make sure that generating an image QR code is the best option for what you want to share. If you answer YES to all of the following questions then you should continue to generate an image QR code: