Backlink Analyzer with Next.js + Express — The Ultimate SEO Tool for Backlink Analysis

Introduction

In today’s competitive digital landscape, backlinks remain one of the strongest ranking factors for search engines. Whether you’re a small business, an SEO agency, or a digital marketing professional, understanding your backlink profile is crucial.

That’s why we built a Backlink Analyzer tool using Next.js and Express — a lightweight yet powerful solution to crawl thousands of URLs, check their status (200, 404, SSL issues, etc.), and verify whether your backlink exists on those pages.

Unlike generic backlink checkers, this tool provides real-time updates, CSV/Excel export, and a dashboard that displays total links, processed links, errors, backlinks found, and progress percentage.

If you’re serious about SEO backlink analysis, you’ll love this.

👉 Built by Adkode — experts in search engine optimization, web development, and digital marketing solutions.

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Why Backlink Analysis Matters

Backlinks are the backbone of SEO. A solid backlink profile can:

• Boost search engine rankings.
• Improve domain authority and trust.
• Drive referral traffic.
• Strengthen brand visibility.

But backlinks are dynamic. Pages get removed, links break, websites change, or backlinks disappear. Without continuous monitoring, you risk losing valuable SEO juice.

That’s where a backlink analyzer tool helps.

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Limitations of Traditional Backlink Tools

Most backlink tools are:

• Expensive — SaaS platforms charge monthly subscriptions.
• Slow — Bulk checks can take hours.
• Closed systems — Hard to export full raw data.
• Not customizable — Can’t integrate into your own workflow.

We wanted something faster, customizable, open-source, and affordable.

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Why We Built a Next.js + Express Backlink Analyzer

We designed this backlink monitoring software to:

• Accept Excel/CSV uploads with thousands of URLs.
• Crawl each URL one by one.
• Check if the backlink (your domain/target link) exists.
• Return HTTP status codes (200, 301, 404, SSL error, etc.).
• Provide real-time dashboard updates via Server-Sent Events (SSE).
• Export results back to Excel with status and backlink info.

This tool is perfect for:

• SEO agencies running audits.
• Freelancers managing client backlinks.
• Businesses protecting their backlink investments.

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Tech Stack

Our backlink analyzer uses modern yet efficient technologies:

• Frontend: Next.js + Tailwind CSS
• Backend: Express.js
• Scraping: Axios + Cheerio
• File Handling: ExcelJS (XLSX), Multer (upload)
• Realtime Updates: Server-Sent Events (SSE)

This combination ensures speed, scalability, and developer-friendly customization.

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How the Backlink Analyzer Works

Here’s the workflow:

1. Upload an Excel/CSV file with URLs.
2. Enter the target backlink to check.
3. The backend starts crawling each URL.
4. For every URL, it checks:
   • Is the page live? (200 OK)
   • Is it down? (404, SSL error, DNS error, etc.)
   • Does it contain the backlink? (Yes/No)
5. Results update live on the dashboard.
6. Export final results as Excel for reporting.

Example output columns:

• Row number
• URL
• HTTP status
• Working? (Yes/No)
• Backlink found? (Yes/No)
• Error/snippet
• Last checked timestamp

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Key Features

✔ Bulk URL crawling (tens of thousands of URLs).
✔ Real-time progress updates.
✔ Backlink existence detection.
✔ Excel import/export.
✔ Dashboard with summary (Total, Processed, Errors, Backlinks found).
✔ Pagination for large datasets (100 rows per page).
✔ Developer-friendly, open-source.

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Advantages Over Paid Backlink Tools

• Free & Open Source — No recurring fees.
• Customizable — Add features like keyword detection, anchor text extraction.
• Scalable — Handle thousands of URLs.
• Integratable — Use as standalone, SaaS, or embed into client dashboards.

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SEO Benefits of Using This Tool

Using this backlink analyzer helps you:

• Detect broken backlinks.
• Identify lost SEO link juice.
• Monitor campaigns.
• Prove backlink placements to clients.
• Maintain clean link profiles (avoid penalties).

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Future Enhancements

We plan to add:

• Anchor text extraction.
• Backlink quality scoring.
• Integration with Google Search Console API.
• Scheduled scans (daily/weekly auto-reports).
• Multi-user support (SaaS mode).

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Conclusion

Backlinks drive SEO success — but only if they remain live.
Our Next.js + Express Backlink Analyzer ensures you never lose track of backlinks.

👉 Try it for yourself on GITHUB.
👉 Explore more SEO solutions at Adkode.
👉 Connect with the developer Suresh Kumar M for collaboration.

With this tool, you can monitor backlinks, fix errors, and grow your SEO rankings — all in real-time.