How to Fix “ModuleNotFoundError: No module named ‘pdfkit’” in Mr. Holmes (Kali Linux)

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How to Fix “ModuleNotFoundError: No module named ‘pdfkit’” in Mr. Holmes (Kali Linux) Introduction Mr. Holmes is a popular OSINT (Open-Source Intelligence) tool used in ethical hacking and cybersecurity learning. However, many beginners face an error while running the tool on Kali Linux: ModuleNotFoundError: No module named 'pdfkit' This error can be confusing, especially for new users. In this article, you will learn why this error occurs and how to fix it step by step in a clean and safe way . Error Description When trying to run Mr. Holmes using the command: sudo python3 MrHolmes.py You may see the following traceback ending with: ModuleNotFoundError: No module named 'pdfkit' Some users also try to activate a virtual environment and get: source .lib_venv/bin/activate source: no such file or directory Why This Error Happens This issue usually occurs due to one or more of the following reasons: 1. Virtual Environment Was Not Created You attempted to activate a virtual...
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🚀 Complete Frontend Developer Roadmap for Mechanical Students to Get an IT Job

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🚀 How Websites Work & Complete Frontend Developer Roadmap for Mechanical Students to Get an IT Job

Have you ever opened a website and wondered — How does this page load? Who creates these buttons, animations, and layouts?
If yes, then welcome! In this blog, you’ll learn how websites work and a complete frontend developer roadmap — especially designed for mechanical engineering students who want to switch to the IT industry and build a high-paying tech career.

🌐 How Does a Website Work?

Before becoming a frontend developer, you must understand what happens when you type something like:

www.google.com

and press Enter.

Here’s the simple step-by-step explanation:

1️⃣ User Sends a Request

When you type a website URL, your browser (Chrome, Firefox, etc.) sends a request to a server.
A server is like a computer that stores all website files.

2️⃣ DNS Finds the Server

The Domain Name System (DNS) is like the contact list of the internet.
It converts the website name (google.com) into its IP address (something like 142.250.183.174).

3️⃣ Server Sends Website Files

Once the correct server is found, it sends the website files such as:

  • HTML (Structure)

  • CSS (Design & Styling)

  • JavaScript (Functionality & Logic)

4️⃣ Browser Renders the Website

Your browser reads the code and displays a beautiful webpage you can interact with.

🎉 That’s how a website works!

💡 Who is a Frontend Developer?

A Frontend Developer is someone who builds the visual part of a website — the part users see and interact with.

👉 Buttons, navigation bar, animation, forms, layout — everything you see is frontend.

Popular examples of frontend technologies:

Area Technologies
Structure HTML
Styling CSS, Tailwind, Bootstrap
Logic JavaScript
Frameworks React, Angular, Vue
Version Control Git & GitHub

🎓 Why Mechanical Engineering Students Can Become Frontend Developers

Many mechanical engineers successfully switch to software roles because:

✔ Logical thinking already developed
✔ Design sense from engineering drawings
✔ Career growth faster in IT
✔ High salary packages and remote job opportunities

You don’t need a CS degree — skills + portfolio = job opportunity.

🛠 Complete Frontend Developer Roadmap (Beginner → Job Ready)

Follow this step-by-step plan and you can become a frontend developer in 5–6 months.

⭐ Step 1: Learn Web & Internet Basics (1 Week)

  • Client & Server

  • HTTPS vs HTTP

  • Domains, Hosting, DNS

⭐ Step 2: Learn HTML (2–3 Weeks)

Topics to master:

  • Tags, Elements, Forms

  • Semantic HTML

  • Accessibility (Alt tags, Aria roles)

📌 Projects:

  • Resume Website

  • Personal Portfolio Layout

⭐ Step 3: Learn CSS (3–4 Weeks)

Topics:

  • CSS Selectors & Box Model

  • Flexbox

  • CSS Grid

  • Responsive Design (Mobile Friendly)

  • Animations & Transitions

📌 Projects:

  • Amazon Homepage Clone

  • Landing Page

  • Multi-page Personal Website

⭐ Step 4: Learn JavaScript (1–2 Months)

Most important skill!

Topics:

  • Variables, Functions, Loops

  • DOM Manipulation

  • Arrays & Objects

  • Fetch API (working with APIs)

  • ES6 Features (classes, spread operators)

  • Async/Await

📌 Mini Projects:

  • Calculator

  • To-Do List

  • Weather App (API)

  • Digital Clock

  • Quiz App

⭐ Step 5: Git & GitHub (1 Week)

  • Save & track code

  • Create repositories

  • Deploy projects

Recruiters love GitHub activity.

⭐ Step 6: Learn React (2–3 Months)

React is the most in-demand frontend library.

Learn:

  • Components & Props

  • React Hooks (useState, useEffect)

  • Routing (React Router)

  • State Management (Context API or Redux)

  • Authentication (Firebase)

📌 Major Projects:

  • Social Media UI Clone

  • Expense Tracker

  • E-commerce App with Cart & Login

  • Movie Search App (API Based)

⭐ Step 7: Deploy & Build Portfolio (2 Weeks)

Use platforms like:

  • Vercel

  • Netlify

  • GitHub Pages

Portfolio must contain:

✔ About Me
✔ Skills
✔ Projects (live links + GitHub links)
✔ Resume
✔ Contact Section

📅 6-Month Practical Learning Plan

Month Focus
1 HTML + CSS
2 JavaScript basics + projects
3 Advanced JS + GitHub
4 React + Projects
5 Portfolio + Deployment + API Projects
6 Job applications + Interview Prep

💼 Where to Apply for Jobs?

  • LinkedIn

  • Naukri

  • Angel.co (Startups)

  • Internshala

  • Indeed

Tip 👉 Start with internships and freelance work. It counts as experience!

🎯 Final Thoughts

Transitioning from mechanical engineering to frontend development is absolutely possible — thousands have already done it.

Just follow this roadmap, stay consistent, build projects, and showcase your skills online.

🌟 You don’t need a degree — you need skills, portfolio, and confidence.


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