How to Generate YouTube Thumbnails Easily with Python

Jacob Naryan - Full-Stack Developer

Posted: Sat Aug 05 2023

Last updated: Wed Nov 22 2023

YouTube is one of the most popular platforms for sharing video content on the internet. If you’re a content creator, you probably know how important it is to have a catchy thumbnail that will attract viewers to your video. In this tutorial, we’ll show you how to generate YouTube thumbnails easily with a simple Python script.

Requirements To follow this tutorial, you will need to have the following installed:

  • Python 3.x
  • PIL (Python Imaging Library)

Step 1: Create a Base Image

First, we’ll create a base image that will serve as the background for our thumbnail. You can create a thumbnail image in any graphics software, or you can use one of the pre-made templates available online.

In this tutorial, we’ll use a base image called “base-youtube-thumbnail.jpg”.

Step 2: Import Libraries

Next, we need to import the required libraries. We’ll be using the PIL library to manipulate images.

from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont
import textwrap

Step 3: Create a Function to Generate a Thumbnail

We’ll create a function called createImage that will take the title of the video as input and generate a thumbnail for the video. The function will do the following:

  • Open the base image
  • Add the title of the video to the thumbnail
  • Save the thumbnail with a filename based on the title of the video
def createImage(title):
title = title.strip()
#open the base image
with Image.open('base-youtube-thumbnail.jpg') as img:
I1 = ImageDraw.Draw(img)
img_width = img.width
# Define font sizes
paraFont = ImageFont.truetype('arial.ttf', 45)
headerFont = ImageFont.truetype('arial.ttf', 120)
# Define margin and offset values
header_margin = 75
header_offset = 50
# Wrap text and add it to the thumbnail
for line in textwrap.wrap(title, width=10):
I1.text((header_margin, header_offset), line, font=headerFont, fill="#03989e")
header_offset += 100
# Save the thumbnail
filename = title.replace(" ", "_")
img.save(f"thumbnails/{filename}.png")

Step 4: Call the Function

We’ll call the createImage function and pass the title of the video as input. The function will generate a thumbnail for the video and save it in the "thumbnails" folder

if __name__ == "__main__":
title = input("Enter title: ")
createImage(title)

That’s it! You can now run the script and enter the title of the video when prompted. The script will generate a thumbnail with the title of the video and save it in the “thumbnails” folder.

This is what I was able to generate with this program:

Conclusion

In this tutorial, I showed you how to generate YouTube thumbnails easily with a simple Python script. You can use this script to create custom thumbnails for your YouTube videos and make them stand out from the crowd.

Remember, the thumbnail is the first thing viewers see when browsing videos on YouTube, so make sure your thumbnail is eye-catching and relevant to your content. Happy creating!

Thank you for reading. If you liked this blog, check out my personal blog for more content about software engineering and technology topics!

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