A little Python tool to convert a TrueType (ttf/otf) font into a PNG for use in demos.

Related tags

Image Processing font2png
Overview

font2png

A little Python tool to convert a TrueType (ttf/otf) font into a PNG for use in demos.

To use from command line it expects python3 to be at /usr/bin, it also expects that Pillow is installed and available to Python.

font2png -f  -o  -w 
     
       -l -s 
      
               (-f) - font to use (ttf or otf)
  --output=
        (-o) - PNG file to be output --width=
        
          (-w) - width in pixels of output (minimum 8 pixels) --left-align (-l) - left align the font (default centred) --scale (-s) - font scale relative to width (defult 1.0) --mono (-m) - output as monochrome --defines (-d) - output letter widths to stdout --quantise=
         
           (-q) - quantise colours to number specified --help (-h) - show usage

After exporting to PNG use your favourite tool to convert to a format suitable for your demo.

The output is one giant tall image where each sized box contains a character, in ASCII order, starting with SPACE (32) and ending with ~ (126).

I will gladly accept pull requests for any improvements that can be made.
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Comments
  • Decouple font size from tile width/height

    Decouple font size from tile width/height

    First of all thanks for this tool! it's really useful and I'd been considering something similar for a while. I have a suggestion which I wanted to run past you before implementing.

    Currently the width option dictates both the font size and height of the tile. There is an implied assumption that a glyph for font size 'x' will fit inside an x*x pixel bounding box. This is somewhat true for height (although some fonts do extend beyond this) but point size has no relationship to glyph width in proportional fonts. What's more, a common requirement would be for the image width to be a multiple of 16 for blitting. For example I might want a 16x14 tile for a 14px font.

    I can see that you introduced the scale option to somewhat address this need but to me it makes sense to allow the user to specify the width, height and font size separately. They can still default to a single value if not specified. I'm happy to create a PR to add these options if you agree with the approach.

    opened by grahambates 3
  • Add separate width/height/size options

    Add separate width/height/size options

    As discussed in #4

    • I made the derived value of width just round up to mutliples of 8 for simplicity.
    • Short option for height is -y because -h is taken. Maybe width should be -x to match.
    opened by grahambates 0
  • Fix short options

    Fix short options

    • Quantise short option -q was not accepting args and was throwing an error
    • I forgot to add the short option -i for --index
    • Updated options docs in README to match the help text
    • Fixed a typo :-)
    opened by grahambates 0
Owner
Rich Elmes
Programmer / Electronic Musician, since 1983.
Rich Elmes
GitHub
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