Pillow draw object to add text to Image

Creating object

PIL.ImageDraw.Draw(im, mode=None)

im: Image to work
mode : Optional , mode to use colour values.

Creating bulk certificates using data from MySQL by Pillow in Python

Adding text to an image

Opening an image

from PIL import Image, ImageDraw, ImageFont

path = "E:\\testing\\images\\cat.png" # existing image to open
img = Image.open(path)

Font family and size.

fnt = ImageFont.truetype("times.ttf", 140) # family with size
#fnt = ImageFont.truetype("arial.ttf", 140)

Full code to read image, add text and save in given path is here.

from PIL import Image, ImageDraw, ImageFont

path = "E:\\testing\\images\\cat.png" # existing image to open
path2 = "E:\\testing\\images\\cat2.png" # save the new image path
img = Image.open(path)
fnt = ImageFont.truetype("times.ttf", 140)

d1 = ImageDraw.Draw(img)
d1.text((80, 160), "plus2net", fill=(194, 61, 43),font=fnt)

img.show()
img.save(path2) # Save the image in new location or path

Alignment of XY with image top left position

We can specify the anchor option for the alignment of the text with xy coordinates. The default value is la (left-ascender) or top – left corner of the image. More precise alignment can be achieved by using anchor option with different values.

Create certificate with details of the student

Certificate with text by using blank Template

from PIL import Image, ImageDraw, ImageFont

path = "F:\\testing\\images\\certificate.png"  # blank certificate
path2 = "F:\\testing\\images\\certificate_01.png"  # final certificate
img = Image.open(path, mode="r")
# img.show()
img1 = ImageDraw.Draw(img)  # create object to Draw
fnt1 = ImageFont.truetype("arial.ttf", 70) # font for Label text
fnt2 = ImageFont.truetype("arial.ttf", 50) # font for data text
fill1 = (39, 77, 113) # colour of the Label text
fill2 = (19, 119, 169) # colour of the data text
img1.text((280, 700), "Name :", fill=fill1, font=fnt1)
img1.text((550, 720), "plus2net", fill=fill2, font=fnt2)

img1.text((280, 800), "Grade :", fill=fill1, font=fnt1)
img1.text((550, 820), "B+", fill=fill2, font=fnt2)

img1.text((280, 900), "Class :", fill=fill1, font=fnt1)
img1.text((550, 920), "Five", fill=fill2, font=fnt2)
img.show()
img.save(path2)  # Save the image in new location or path

List data over an Image

There are four elements in one List. We will use the data from the list to add to an Image.

from PIL import Image, ImageDraw, ImageFont

path = "E:\\testing\\images\\certificate_b.png"  # blank certificate
path2 = "E:\\testing\\images\\certificate_12.png"  # final certificate
img = Image.open(path, mode="r")
# img.show()
img1 = ImageDraw.Draw(img)  # create object to Draw

fnt1 = ImageFont.truetype("arial.ttf", 70) # Font 
fnt2 = ImageFont.truetype("arial.ttf", 50)
fill2 = (19, 119, 169) # colour used for data 

l1=[12,'plus2net','Five',80] # List data to use for certificate 

img1.text((570, 615), str(l1[0]), fill=fill2, font=fnt2)
img1.text((570, 720), l1[1], fill=fill2, font=fnt1)
img1.text((570, 870), l1[2], fill=fill2, font=fnt1)
img1.text((570, 1000), str(l1[3]), fill=fill2, font=fnt1)
img.show()
img.save(path2)  # Save the image in new location or path

Bulk Data from student table

records from database table over an Image

We can collect records from our student table. Using the records we will create certificate for all. The file name should have the student id.

certificate_4.png
certificate_5.png
certificate_5.png
....

The path to store the certificates are created using above format and inside the for loop each time a new file name is created. str() is used to convert integer to string.

path2 = "E:\\testing\\images\\certificate_"+str(row[0])+".png"

We will connect to Database and execute the query.

from sqlalchemy import create_engine
my_conn = create_engine("mysql+mysqldb://root:pw@localhost/my_db")

execute the query and get all the records. Here we are using LIMIT query to get 5 records only. This can be increased to get more records.

l1=my_conn.execute("SELECT * FROM student limit 0,5")

Full code is here

from PIL import Image, ImageDraw, ImageFont
from sqlalchemy import create_engine
my_conn = create_engine("mysql+mysqldb://id:pw@localhost/my_db")

path = "E:\\testing\\images\\certificate_b.png"  # blank certificate
fnt1 = ImageFont.truetype("arial.ttf", 70) # Font 
fnt2 = ImageFont.truetype("arial.ttf", 50)
fill2 = (19, 119, 169) # colour used for data 

l1=my_conn.execute("SELECT * FROM student limit 0,5")
for row in l1:
    print(row )
    img = Image.open(path, mode="r")
    img1 = ImageDraw.Draw(img)  # create object to Draw
    path2 = "E:\\testing\\images\\certificate_"+str(row[0])+".png"
    img1.text((570, 615), str(row[0]), fill=fill2, font=fnt2)
    img1.text((570, 720), row[1], fill=fill2, font=fnt1)
    img1.text((570, 870), row[2], fill=fill2, font=fnt1)
    img1.text((570, 1000), str(row[3]), fill=fill2, font=fnt1)
    img.show()
    img.save(path2)  # Save the image in new location or path

Generating PDF files

While creating a new image we have to use mode as RGB ( not RGBA). We can't keep Alpha Channel which specifies the opacity for a color and then convert to PDF.
While creating the image, use the option to create RGB mode only. If we don't have the choice or reading one existing image then we can convert the mode to RGB by using convert() method.
Here is the code to convert the image mode to RGB.

img = Image.new("RGBA", (width, height), color="#F1F1CC")
#img = Image.new("RGB", (width, height), color="#F1F1CC")
if img.mode == 'RGBA':
    img = img.convert('RGB')

from PIL import Image, ImageDraw, ImageFont

path = "E:\\testing\\images\\arc1.pdf"  # new pdf file to create
width, height = 400, 200
img = Image.new("RGBA", (width, height), color="#F1F1CC")
#img = Image.new("RGB", (width, height), color="#F1F1CC") # in RGB mode 
if img.mode == 'RGBA': # Not required if image mode is RGB 
    img = img.convert('RGB')
img1 = ImageDraw.Draw(img)  # create object to Draw

fnt = ImageFont.truetype("arial.ttf", 40)
img1.text((width-215,height-115), "Plus2net", fill=(194, 61, 43), font=fnt,anchor='ls')
#print(img1.text['anchor'].getvalue())
img.show()
img.save(path)  # Save the image in new location or path

Here is the changes required in above certificate generation script to get all certificates in PDF format.

    img = Image.open(path, mode="r")
    if img.mode == 'RGBA':
        img = img.convert('RGB')
    img1 = ImageDraw.Draw(img)  # create object to Draw
    #path2 = "E:\\testing\\images\\certificate_"+str(row[0])+".png"
    path2 = "E:\\testing\\images\\certificate_"+str(row[0])+".pdf"

Tkinter for Save or Print Certificates in different formats

What is Tkinter ?
Filedialog asksaveasfile
Tkinter GUI for Save and Print command

Pillow : Saving documents in PDF JPEG or PNG formats using Tkinter File dialog

from PIL import Image, ImageDraw, ImageFont

path = "F:\\testing\\images\\certificate_b.png"  # blank certificate
path2 = ""  # final certificate
img = Image.open(path, mode="r")
if img.mode == "RGBA":
    img = img.convert("RGB")
# img.show()
img1 = ImageDraw.Draw(img)  # create object to Draw

fnt1 = ImageFont.truetype("arial.ttf", 70)  # Font
fnt2 = ImageFont.truetype("arial.ttf", 50)
fill2 = (19, 119, 169)  # colour used for data

l1 = [12, "plus2net", "Five", 80]  # List data for certificate

img1.text((570, 615), str(l1[0]), fill=fill2, font=fnt2)
img1.text((570, 720), l1[1], fill=fill2, font=fnt1)
img1.text((570, 870), l1[2], fill=fill2, font=fnt1)
img1.text((570, 1000), str(l1[3]), fill=fill2, font=fnt1)
# img.show()
# img.save(path2)  # Save the image in new location or path
#####
import tkinter as tk
from tkinter import filedialog
import win32print
import win32api


my_w = tk.Tk()  # Parent winow
my_w.geometry("400x300")  # Size of the window, width x heiht
my_w.title("www.plus2net.com")  # title of the window
font1 = ("times", 26, "bold")  # font size style
l1 = tk.Label(
    my_w, text="Save File or Print File", width=20, font=font1, anchor="center"
)
l1.grid(row=1, column=1, columnspan=2, pady=50)

b1 = tk.Button(my_w, text="Save", bg="yellow", width=10, command=lambda: save_file())
b1.grid(row=2, column=1)

b2 = tk.Button(
    my_w, text="Print", bg="lightgreen", width=10, command=lambda: print_file()
)
b2.grid(row=2, column=2)


def save_file():
    file = filedialog.asksaveasfilename(
        filetypes=[("PDF file", ".pdf"), ("JPEG file", ".jpeg"), ("PNG file", ".png")],
        defaultextension=".jpeg",
    )
    path2 = file
    img.save(path2)


def print_file():
    choices = [printer[2] for printer in win32print.EnumPrinters(2)]
    print(*choices)
    for row in choices:
        print(row)
    win32print.SetDefaultPrinter(choices[2])
    # path2 = "F:\\testing\\images\\certificate_12.pdf"  # Path of  PDF file
    win32api.ShellExecute(0, "print", path2, None, ".", 0)


my_w.mainloop()
#####

Use your own or Download a sample blank certificate here.
Python Imaging Library PIL ImageDraw to add Line, rectangle, circle to an Image. ImageFilter Thumbnails using Pillow and Tkinter GUI Watermark on Image using text and Image

While Loop if else : condition checking Python- Tutorials

Subhendu Mohapatra

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ImageDraw to add Text