FAQ - frequently asked questions

Here is a selection of frequently asked questions with answers to our QR code generator.

Questions about the Qr code:

A QR code - an abbreviation of Quick Response Code - is a two-dimensional code that can encrypt several thousand characters. It can for example store information about the product the code is attached to or link to a destination URL. When scanning a QR code with a smartphone or tablet, the user will be directed to the destination URL. There are two types of QR Codes: static and dynamic.

There is one main difference between a static and a dynamic QR code. While generating a dynamic QR Code, a generally shorter URL is created on our QR.de-server for the destination URL of the QR Code. Whenever the QR code is scanned, first this shorter URL is called up on our QR-server and then the user is forwarded to the actual destination URL. This method has two major advantages: firstly, the information encoded in a dynamic QR code can be subsequently changed at any time without having to change the QR code itself and, secondly, every time the QR code is scanned, information is gathered and put into statistics.

A QR code consists of dark and light modules arranged in a square and contains the following elements:

Position detection Patterns: placed in three corners to ensure a clear orientation.
Allignment pattern(s): placed in the lower right quarter of the QR code and important for additional orientation, especially for larger QR codes. Depending on the amount of stored data, it can be present multiple times.
Timing Patterns: consist alternately of dark and light modules and always start and end with a dark module. They indicate the size of the data Matrix.
Version Information: provide information about the version of a QR code. There are currently 40 different QR code versions differing in terms of the number of modules and configurations: the smallest version has 21x21 = 441 and the largest 177x177 = 31,329 modules.
Format Information: include information about the error correction level that indicates in percent how much a QR code can be damaged to be still readable by a scanner. There are four levels of error correction: Level L = 7%, Level M = 15%, Level Q = 25%, Level H = 30%. Note, however, that as the level of error correction increases, the amount of stored data decreases.
Data and error-correction area: contains the encoded data itself as well as an amount (determined depending on the error correction level) of error correction data.

Many of the newer smartphones and tablets already have a QR code scanner installed. This allows you to scan a QR code by opening your camera and holding it over a QR code. If your smartphone or tablet does not have such a feature, you can use a scanner app. For those of you, who want an easier way without app installation, just use the scan function QR.de offers.

The easiest way to create a QR code is to use a QR code generator like the one QR.de offers. Simply enter the required information, such as the destination URL, and generate your own dynamic QR Code in a few seconds.

At QR.de you can save the graphics file of your QR code as a png as well as a svg file. These popular formats can be easily opened and printed in high-resolution, so that nothing stands in the way of a good print quality of your QR code.

Your QR code can easily be printed using most printing methods. It is best to make sure that the contrast from the background to your QR code is as high as possible and that the code is easy to recognize. Should this not be the case problems during a scan may occur. You can also color the generated QR code by using a graphics program, but make sure that the code color stands out from the background color. There are no limits to the size of a QR code as long as the scanner can read the image in full format. This is possible with common mobile devices such as smartphones from a code size of 2.5x2.5cm. When you have decided how and where you want to print and distribute your code, pay attention to the sharpness of the print. Especially with textiles you should have a test print made and test it with your smartphone.

We offer our premium members the possibility to generate QR codes fully automatically with an API. Your server requests our server API and gets the QR code returned as an answer.

Yes, all created QR codes on QR.de may be used commercially and privately.

Basically, there are no restrictions on the number of views and the type of use, except that you can not apply QR codes and target URLs from QR.de through spam and the stored web pages must comply with the law (no phishing, no inappropriate contents, no copyright infringement etc).

Yes, this is the great advantage of our service: you can change the target URL of an already generated QR code subsequently. You get access data to your email address with which you can make changes and track your stats.

In addition to other uses, QR codes are suitable for uses in marketing and advertising. No matter whether you want to promote a product, a website or a social media presence - with QR codes this is very easy. Print your QR codes on:


  • Hats
  • T-Shirts
  • Sweater
  • Cover
  • Cushions
  • Shoes


  • Pens
  • Keychain
  • Roll up banners
  • Cups
  • Stamp
  • Billboards
  • Buttons
  • Mousepads
  • Bottles

Print media:

  • Calendar
  • Magazine
  • Newspaper ads
  • Flyer
  • Brochures
  • Sticker
  • Business cards
  • Packaging

For creatives:

  • Sugar cubes
  • Permanent or temporary tattoos
  • Cufflinks
  • Cookies

Questions about the account:

Your generated QR codes are valid as long as your membership is active. You can test our service for free for 6 weeks and create one dynamic QR code. To use our service beyond that time period or to create more QR codes, you need to upgrade to our premium membership.

With a bookmarklet you can generate QR codes with just a few clicks. The bookmarklet is placed in your bookmarks bar and is constantly available to you.

As soon as you are on a website you want to create a QR code for, you only need to click on your bookmarklet and a QR code for this website will appear instantly.

Subject premium membership:

As a premium member, you can generate up to 1000 dynamic QR codes (depends on your plan). In addition, you can specify individual short URLs for your QR code in the format https://qr.de/YourName. You will also receive additional functions such as: API access.

The pricing of a premium membership depends on your plan: from 12 EUR up to 96 EUR per year (including VAT). You can pay conveniently and fully automatically via PayPal, credit card or bank transfer. Your account will be activated directly after successful payment for 1 year. You have no notice period and commitment period: your membership expires automatically after one year, unless you actively renew for another year.

With the API, you can create QR codes automatically as premium member. Your server queries to our server API and gets returned as a response to the QR code. This makes sense when you generate automatically regular new QR codes.

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