Question

How would I center-align (and middle-vertical-align) text when using PIL?

Answer 1

Deprecation Warning: textsize is deprecated and will be removed in Pillow 10 (2023-07-01). Use textbbox or textlength instead.

Code using textbbox instead of textsize.

from PIL import Image, ImageDraw, ImageFont


def create_image(size, bgColor, message, font, fontColor):
    W, H = size
    image = Image.new('RGB', size, bgColor)
    draw = ImageDraw.Draw(image)
    _, _, w, h = draw.textbbox((0, 0), message, font=font)
    draw.text(((W-w)/2, (H-h)/2), message, font=font, fill=fontColor)
    return image

myFont = ImageFont.truetype('Roboto-Regular.ttf', 16)
myMessage = 'Hello World'
myImage = create_image((300, 200), 'yellow', myMessage, myFont, 'black')
myImage.save('hello_world.png', "PNG")

Result

---

Use Draw.textsize method to calculate text size and re-calculate position accordingly.

Here is an example:

from PIL import Image, ImageDraw

W, H = (300,200)
msg = "hello"

im = Image.new("RGBA",(W,H),"yellow")
draw = ImageDraw.Draw(im)
w, h = draw.textsize(msg)
draw.text(((W-w)/2,(H-h)/2), msg, fill="black")

im.save("hello.png", "PNG")

and the result:

If your fontsize is different, include the font like this:

myFont = ImageFont.truetype("my-font.ttf", 16)
draw.textsize(msg, font=myFont)