问题
Does anyone know if we can resize a QR-Code easily by using a proper vector program OR, is the size information contained on that code, hence, we will not be able to resize without changing the code ?
Thanks in advance.
回答1:
You can resize as much as you want. The information is encoded in the pattern of the data, not in the size of the dots themselves. As long as a scanner can resolve properly between light/dark, the QR code should be readable at any size.
回答2:
For high resolution (vector image) QR code for printing/publishing:
- Get your free QR code
- Right-click-and-save OR PrintScreen the QR code
- Open/insert it in Photoshop, crop the QR code, and save as *.psd file (default Photoshop format)
- Open that *.psd file with Adobe Illustrator – and you get the vector QR code. DONE! :)
回答3:
Update 2016: If someone happens to need to upscale a QR code image in some sort of browser/webview - you might get away with a simple CSS property:
img {
image-rendering: pixelated;
}
This way the upscaled image stays sharp.
See a comparison here: http://codepen.io/erkkit/pen/GodxGX
回答4:
Don't just re-size it that will make the edges blurry. You want it to have hard edges like MS-paint or the pencil brush in Photoshop. Open the file in Photoshop and go to IMAGE - RE-SIZE IMAGE and make sure Nearest Neighbor is selecting from the bottom drop down menu before you click OK
回答5:
You CAN'T, not with the free QR generators. Unless you do some Adobe Illustrator tweaks with Live Trace/Paint afterwards. The abundant free QR generators are a joke when it comes to publishing the QR code you need. Resizing an originally low resolution image (the previous comment) for publishing/printing purposes is the most rediculous statement I've seen in a while. The guy doesn't know what he is talking about.
来源：https://stackoverflow.com/questions/6179376/can-we-resize-a-qr-code