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Can we resize a QR code?

Does anyone know if we can easily resize a QR code using the correct OR vector program, is the size information contained in this code so we cannot resize without changing the code?

Thanks in advance.

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6 answers

You can resize as much as you want. Information is encoded by a data template, not by the size of the points themselves. As long as the scanner can correctly resolve between light / dark, the QR code should be readable of any size.

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For high resolution (vector image) QR code for printing / publishing:

  • Get a free QR code
  • Right-click and save the OR PrintScreen QR code.
  • Open / paste it in Photoshop, crop the QR code and save as * .psd file (Photoshop default format)
  • Open this * .psd file with Adobe Illustrator and you will get a vector QR code. MADE!:)
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Don't just resize to make the edges blur. You want it to have hard edges like MS-paint or a pencil-brush in Photoshop. Open the file in Photoshop and go to IMAGE - RE-SIZE IMAGE and make sure Nearest Neighbor chooses from the bottom drop-down menu before clicking OK

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  • Download a free QR code image from a QR code generate a web page ( http://unitag.io )
  • open or drag and drop the downloaded QR code into Adobe Illustrator
  • Adobe Illustrator> Go to trace image> Select an option: high-precision photo and then click Expand.
  • Finally, you get vector graphics. Now you can resize to 72x72px (1x1 inches).

Note. Resizing below 1 inch; QR codes may not be available.

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Update 2016: if someone needs to enlarge the image of the QR code in some browser / web view, you can get away with a simple CSS property:

img { image-rendering: pixelated; }

Thus, the scaled image remains sharp.

See comparison here: http://codepen.io/erkkit/pen/GodxGX

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You CAN'T, and not with free QR generators. If you do not make some adjustments to Adobe Illustrator with Live Trace / Paint afterwards. Single free QR generators are a joke when it comes to publishing the QR code you need. Resizing a low resolution image (previous comment) for publishing / printing purposes is the funniest expression I've seen after a while. The guy does not know what he is talking about.

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Source: https://habr.com/ru/post/889398/

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