# qr_labels

I was packing boxes and nerd-sniped myself by deciding I needed a labelling
and cataloguing system to help me keep track of what was there.

To do that I needed to print labels for boxes, and figured it might be useful
if they also had QR codes on them.

I thought there would be a simple online tool to create PDF pages of identical 
QR labels, but apparently not.

# Installing

    go install  code.ppl.town/justin/qr_labels/cmd/qr_labels@latest

or, you can just run it without installing:

    go run code.ppl.town/justin/qr_labels/cmd/qr_labels@latest <arguments>

# Synopsis

Generate a page with 6 labels, where the QR code represents the string
"hello world" and the printed label is the same,

    qr_labels -code "hello world" -code-is-label -rows 3 -cols 2 -output labels1.pdf

![hello world](labels1.png)

Generate a page with 24 labels, with the code being a URL and the text label 
being a different string. Adjust the sizes of the code and the font and include
borders between each label:

    qr_labels -code "https://www.youtube.com/watch?v=dQw4w9WgXcQ" -label 'innocent link' -rows 6 -cols 4 -size 30 -font-style BI -borders -font-size 20 -output labels2.pdf

![hello world](labels2.png)

# Help

Run `qr_labels -help` for all command line parameters.

```
Usage of qr_labels:
  -borders
        print borders between labels
  -code string
        string to turn into a QR code (URL, text etc)
  -code-is-label
        use the -code as the -label
  -cols uint
        number of columns on the page (default 3)
  -font string
        name of the font (default "Helvetica")
  -font-size float
        font-size, in pts (default 24)
  -font-style string
        font style, combine 'B', 'U', 'S', 'I' characters
  -label string
        label (printed above QR code)
  -output string
        filename to write the PDF
  -page-size string
        page size (A1, A2, A3, A4, A5, A6, A7, Letter, Legal, Tabloid) (default "A4")
  -rows uint
        number of rows on the page (default 4)
  -size float
        size of the QR code (default 50)
```