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How to Make A QR Code..

Besides smartphone apps, there are many websites dedicated to creating QR codes with varying feature sets and levels of access without registering or paying. In most instances, you simply enter information into the relevant fields and save the QR code in a file such as JPG or PNG. If you'd rather program your QR code from scratch, Thonky has a full tutorial to get you started.
QR Code Generator is the most basic we came across during a few quick searches but it's completely free and includes support for plain text, URLs, as well as contact information and the ability to send SMS messages through the QR code. You can include information in all of the fields, though again, more data results in more squares and makes it increasingly difficult for scanners to read the code.
QRStuff.com offers additional features such as the ability to link app stores, social media including Facebook (pages and likes), Instagram and LinkedIn, links to Dropbox files or folders, Google Map locations, Wi-Fi logins as well as shortcuts to send funds over PayPal and Bitcoin. However, if you want access to all of the site's features, namely the style/image editor, you'll have to pay.
While it doesn't provide the same level of functionality as QRStuff, QR-Creator.com is completely free and supports uploading custom images which can be used in the background of the QR code. The more basic the image the better off it will likely appear in the background of the QR code. Here's what it looked like when we uploaded one of the TechSpot logos:

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