Build a Professional Resume Instantly – Full Project Walkthrough: Flask Web-Based Resume Builder with PDF Generation

Build a Professional Resume Instantly – Full Project Walkthrough: Flask Web-Based Resume Builder with PDF Generation

Build Your Dream Resume Online: Introducing Our Web-Based Resume Builder Project

Are you searching for a Resume Builder Web App project with a complete Python Flask code walkthrough? Want to create a professional PDF resume online using Python? You’re at the right place!

In this article, I’ll walk you through every detail of our Web-Based Resume Builder project — covering project overview, detailed code explanation, features, working logic, technology stack, and more.
Perfect for developers, students, freelancers, or anyone curious about building an online PDF resume generator.

Let’s dive right in! 🚀


 

🌟 Project Overview

Our Resume Builder is a web application where users fill out a simple form, upload a photo, and instantly generate a PDF resume.

Built with:

  • Python (Flask framework)

  • HTML5 and Tailwind CSS (for stylish forms)

  • ReportLab (for dynamic PDF creation)

Key Features:

  • User-friendly form

  • Photo upload support

  • Elegant two-column resume design

  • Instant PDF download

  • Responsive & mobile-friendly UI


 

🛠️ Technology Stack

TechnologyPurpose
FlaskBackend server & form handling
ReportLabDynamic PDF generation
HTML5 + TailwindCSSFrontend design
WerkzeugSecure file uploads
PythonCore programming language

📄 Full Code Explanation

Now, let’s break down the project code step-by-step:


1. app.py — The Flask Server

from flask import Flask, render_template, request, send_file, redirect, url_for
from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import A4
from reportlab.lib import colors
from textwrap import wrap
import os
from werkzeug.utils import secure_filename

  • Flask is used to handle HTTP requests and serve web pages.

  • ReportLab creates a PDF document programmatically.

  • textwrap is used to wrap text cleanly inside the PDF.

  • Werkzeug ensures the uploaded file (photo) is safely handled.


 

2. Flask App Setup

app = Flask(__name__)
app.config[‘UPLOAD_FOLDER’] = ‘static/uploads’

  • We initialize the Flask app.

  • Set a folder (static/uploads) to store profile photos safely.


 

3. Helper Function: Wrapping Text for PDF

def wrap_text(text, width):
lines = []
for line in text.split(‘\n’):
lines.extend(wrap(line.strip(), width))
return lines

  • Ensures that long text like summary, skills, experience, etc., wraps neatly inside the PDF page.


 

4. Flask Route: / — Home Page (Form)

@app.route(‘/’, methods=[‘GET’, ‘POST’])
def resume_form():
if request.method == ‘POST’:
data = request.form.to_dict()
file = request.files.get(‘photo’)

  • GET Request: Shows the form to the user.

  • POST Request: Collects submitted form data and uploaded photo.


 

5. Saving the Uploaded Photo

if file and file.filename:
filename = secure_filename(file.filename)
photo_path = os.path.join(app.config[‘UPLOAD_FOLDER’], filename)
file.save(photo_path)

  • Checks if a photo is uploaded.

  • Saves it securely using Werkzeug’s secure_filename method to prevent malicious file names.


 

6. Generate the PDF

file_path = generate_pdf(data, photo_path)
return send_file(file_path, as_attachment=True)

  • Once the data is collected, generate_pdf() is called to create the resume.

  • Then, the PDF is sent back to the user for download.


 

7. PDF Creation Logic (generate_pdf())

c = canvas.Canvas(file_name, pagesize=A4)
width, height = A4

  • A new PDF canvas is created using ReportLab.

  • A4 page size is used (standard resume paper size).


 

8. Sidebar Design (Left Column)

def draw_sidebar():
c.setFillColor(colors.HexColor(“#2C3E50”))
c.rect(0, 0, sidebar_width, height, fill=1)

  • Draws a beautiful dark sidebar on the left side.

  • Displays Skills, Languages, Certificates, Awards, Interests in the sidebar neatly.

If a photo is uploaded, it is added:

if photo_path:
c.drawImage(photo_path, 40, height – 120, width=80, height=80, mask=’auto’)

9. Main Content Section (Right Column)

Sections included:

  • Header: Name, Email, Phone

  • Profile Summary

  • Work Experience

  • Education

Each section uses helper functions like draw_main_block() and draw_main_section() to organize text with bold titles, wrapped descriptions, and neatly spaced content.

Example:

def draw_main_block(title, content):
c.setFont(“Helvetica-Bold”, 12)
c.drawString(content_x, y, f”• {title}”)
# Draw wrapped content here

10. Page Break Handling

The function check_page_break() ensures clean page breaks whenever the content overflows:

def check_page_break(extra_space_needed=60):
if y < margin_bottom + extra_space_needed:
draw_footer(page_number)
c.showPage()
# Reset drawing positions

11. Footer Section

def draw_footer(page_num):
footer_text = f”Page {page_num}”
c.drawString((width – text_width) / 2, 20, footer_text)

  • Adds a page number footer at the bottom of each page.


 

📄 form.html — Frontend Form (TailwindCSS)

The frontend form is clean, mobile-friendly, and made using TailwindCSS:

<form method=”POST” enctype=”multipart/form-data” class=”space-y-6″>
<input type=”text” name=”name” required>
<input type=”email” name=”email” required>
<input type=”text” name=”phone” required>
<textarea name=”summary” rows=”4″></textarea>

<input type=”file” name=”photo”>
<button type=”submit”>Generate PDF Resume</button>
</form>

  • Form Fields: Name, Email, Phone, Summary, Skills, Experience, Education, Certificates, Languages, Awards, Interests.

  • File Upload: For profile picture.

  • Submit Button: Generates the PDF.


 

🚀 How It Works Step-by-Step

StepAction
1User visits the homepage and fills the resume form
2Optionally uploads a profile picture
3Submits the form
4Flask collects the data and photo
5ReportLab generates a customized PDF resume
6PDF is sent to the user for instant download

 

🎯 Key Advantages of This Resume Builder

  • 100% Free and Open Source

  • Mobile and Desktop Responsive

  • Customizable Sidebar and Main Content

  • Secure Uploads

  • Professional, Neat Design

  • Instant PDF Generation (No external API needed)


 

🛡️ Lesson taught in this video:

✅ Resume Builder Web App with Flask
✅ Build Online PDF Resume Python
✅ Resume Builder Flask Python ReportLab
✅ Web Based Resume Creator Full Project
✅ Flask Resume Builder Project for Students
✅ Python Create Resume PDF Online
✅ Tailwind CSS Resume Form Design


 

📢 Conclusion

This Flask Web-Based Resume Builder project is the perfect solution for anyone wanting to quickly build a professional resume online. With a minimal setup, clean code, mobile-responsive design, and easy PDF export, it’s an excellent project for:

  • Students preparing for interviews

  • Developers learning Flask + ReportLab

  • Freelancers wanting to offer online resume services

  • Anyone seeking a DIY Resume Maker


Download the source code
Deploy it online
Customize it with colors, fonts, templates

🚀 Start building your career-changing resumes today with our powerful, elegant Resume Builder!

 


💬 Got questions? Drop a comment or reach out!

Leave a Comment

Your email address will not be published. Required fields are marked *