Why not ship with a default font able to change font size in ImageDraw.Draw.text?

[wikiwen]

What did you do?

Hello, every author of Pillow! Thank you create this powerful tool in image processing.
I want to draw a text in a image. But I found so inconvenient to change font size. As the default font is unsupported to change font size, I need to download a truetype font file, and define a object ImageFont to change font size. Why not shipped with a default font able to change font size in ImageDraw.Draw.text like opencv?

What are your OS, Python and Pillow versions?

• OS: CentOS
• Python: 3.7
• Pillow: 9.2.0

# Now: default font. can't change font size. Often so small in a image.
draw.text((10, 25), "world", font=None)

# Now: need download arial.ttf to change font size
font = ImageFont.truetype("arial.ttf", 15)
draw.text((10, 25), "world", font=font)

# Expected: default font, set font_size
draw.text((10, 25), "world", font_size=15)

[wikiwen]

similiar issue in 2017 #2695

[nulano]

I think the main reason this has not yet been done are concerns over file size.

The current default font has about 6.5KB, but uses 8.7KB due to base64 encoding.

Using this website, I found a monospace TrueType font Share Tech Mono that has about 42KB (about 57KB with base64 encoding, ~2.5% of current Pillow wheels) and is licensed under the Open Font License, which might be acceptable for including in Pillow.

[Yay295]

Share Tech Mono is only 16.3KB when converted to WOFF2, if that works. 21.6KB for WOFF.

[nulano]

WOFF2 support was added to Pillow wheels in 9.4.0, so that would probably be fine: #6562 / python-pillow/pillow-wheels#320 / python-pillow/pillow-wheels#322

[radarhere]

Using this website, I found a monospace TrueType font Share Tech Mono

In my entirely subjective opinion, Share Tech Mono doesn't look quite "normal". I have instead found Aileron Regular, a CC0 font from https://dotcolon.net/font/aileron.

I've created PR #7354 as a possible solution to this.