Build a resume comparison tool

Here’s a simple implementation plan for building a Resume Comparison Tool using web technologies. It will let users upload or input two resumes and compare them based on keywords, skills, job titles, education, and experience. This version will be functional, clean, and extensible for future features like AI ranking or job-description matching.

🛠️ Tech Stack

• Frontend: React (with TailwindCSS for styling)

• Backend (Optional): Node.js/Express or Python Flask (for deeper parsing, NLP)

• Resume Parsing: JavaScript + libraries like papaparse (for CSV) or PDF parsing (like pdf.js)

• Comparison Logic: In-browser JavaScript or offloaded to backend

🎯 Features

• Upload or paste two resumes (PDF or text)

• Extract and display key sections: Skills, Experience, Education

• Highlight matching vs unique content

• Score similarity (e.g., 0–100%)

• Export or download comparison

✅ Basic React Implementation (Frontend Only)

tsx
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// File: ResumeComparer.tsx
import { useState } from "react";
import { Textarea } from "@/components/ui/textarea";
import { Button } from "@/components/ui/button";
import { Card, CardContent } from "@/components/ui/card";

const compareTextSections = (text1: string, text2: string) => {
  const words1 = new Set(text1.toLowerCase().split(/s+/));
  const words2 = new Set(text2.toLowerCase().split(/s+/));

  const common = [...words1].filter(word => words2.has(word));
  const unique1 = [...words1].filter(word => !words2.has(word));
  const unique2 = [...words2].filter(word => !words1.has(word));

  const similarityScore = (common.length / ((words1.size + words2.size) / 2)) * 100;

  return {
    common,
    unique1,
    unique2,
    similarityScore: similarityScore.toFixed(2),
  };
};

export default function ResumeComparer() {
  const [resume1, setResume1] = useState("");
  const [resume2, setResume2] = useState("");
  const [result, setResult] = useState<any>(null);

  const handleCompare = () => {
    const comparison = compareTextSections(resume1, resume2);
    setResult(comparison);
  };

  return (
    <div className="max-w-4xl mx-auto mt-10 space-y-6">
      <h1 className="text-3xl font-bold text-center">Resume Comparison Tool</h1>

      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
        <Textarea
          placeholder="Paste Resume 1 here..."
          className="h-64"
          value={resume1}
          onChange={(e) => setResume1(e.target.value)}
        />
        <Textarea
          placeholder="Paste Resume 2 here..."
          className="h-64"
          value={resume2}
          onChange={(e) => setResume2(e.target.value)}
        />
      </div>

      <div className="text-center">
        <Button onClick={handleCompare}>Compare Resumes</Button>
      </div>

      {result && (
        <Card>
          <CardContent className="space-y-4 mt-4">
            <p><strong>Similarity Score:</strong> {result.similarityScore}%</p>
            <div>
              <strong>Common Words:</strong>
              <div className="text-sm mt-1 text-gray-700">{result.common.join(", ")}</div>
            </div>
            <div>
              <strong>Unique to Resume 1:</strong>
              <div className="text-sm mt-1 text-red-600">{result.unique1.join(", ")}</div>
            </div>
            <div>
              <strong>Unique to Resume 2:</strong>
              <div className="text-sm mt-1 text-blue-600">{result.unique2.join(", ")}</div>
            </div>
          </CardContent>
        </Card>
      )}
    </div>
  );
}

🧠 Future Enhancements

• PDF Parsing: Use pdf.js to support direct uploads.

• Section-based comparison: Parse and compare sections like Education, Experience, Skills.

• Keyword matching: Match resume keywords against a job description.

• AI Integration: Use GPT or OpenAI embeddings for semantic similarity.

• Export as PDF/CSV: Allow users to download comparison reports.

If you’d like, I can help build a backend (Node/Flask) version with NLP or OpenAI API integration for deeper resume insights.