QR codes are matrix codes that smartphones can decode by camera scanning. These codes can store any type of text and can be an effective way to code up a lot of text and publish it on products while saving space. To make such qr codes you should pay a visit to QRcore.
QRcore is a free web tool that helps its users generate QR codes with ease. All you have to do is type up any piece of text, select the image dimensions in pixels, and click on the “Generate” button. The QR code will be generated and shown to you. The code’s image can be saved and printed out. To share the image you can share its direct URL or use its embeddable code to paste it on your blog or website.

Features:
- A user friendly website.
- Helps generate QR codes.
- QR code’s image can be saved.
- Provides the code’s direct image URL and embeddable code.
- Similar tools: Likify, LocationBookmark, BeQRious, QRVCards and QRJumps.
Check out QRcore @ www.qrcore.com (By Umar from TechCityInc)
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Just wanted to add a few more to your list:
Here is a list of FREE QR Code Generators and Readers: http://ow.ly/2KGup
Just in case your not ready to QR code yet… here is a handy dandy 1D barcode generator http://barcoderesourcing.com/barcode_generator.html