Tom's Site Auditor — Offline Website Health Scanner

9 min read Original article ↗

Windows Desktop • 100% Offline • Zero Dependencies

Find Every SEO Issue
on Your Site. Fix What Matters.

Scan any website from your desktop and get a clear, prioritized report of every broken link, missing tag, and SEO problem — with plain-language fix guidance for each one. Unlike cloud-based SEO tools that charge monthly and collect your data, this site auditor runs entirely on your machine. One-time $29 purchase, no accounts, no subscriptions.

30+ Issues Detected

1,000+ Downloads

$0/mo No Subscriptions

TomsSiteAuditor.exe

Tom's Site Auditor — Overview

HTML Reports Self-contained, portable, shareable

Deterministic Mode Repeatable, comparable scans

Scan History Track changes over time

Freelancers & Agencies

Stop paying for a monthly SEO tool you only use a few times. Scan a client's site, generate a professional HTML report with your findings, and send it over — all for a single $29 payment.

Site Owners

Someone told you "your SEO needs work" but didn't say what to fix. Run a scan and get a plain-language list of every problem, ranked by priority, with guidance on how to fix each one.

Developers

Tired of SEO tools that give you a magic number with no explanation? Every issue here is explainable and verifiable. Deterministic scanning, CSV exports, and no black-box scores.

1

Enter a URL

Paste any website address. Set your preferred scan depth and options, or just use the defaults.

2

Scan

The crawler discovers every page, checks every link, extracts SEO signals, and logs every issue it finds.

3

Get Your Report

Open the portable HTML report — health score, prioritized issues, and specific fix guidance for every problem found.
See a sample report.

Site Auditor — Deep Scan Demo

Demo made with Guidde

30+ SEO Checks in One Scan

Catches missing titles, broken internal and external links, missing meta descriptions, redirect chains, absent alt text, duplicate content signals, and more — all detected in a single crawl.

Reports You Can Actually Share

Each audit generates a self-contained HTML file you can email to clients, hand to your boss, or archive for later. Opens in any browser — no special viewer needed. Preview a sample report.

100% Offline — Your Data Stays Private

No cloud services, no API keys, no accounts required. The entire audit process runs locally on your PC; your website data never leaves your machine.

Spot Real Regressions

Deterministic scanning means repeatable crawl order. Compare scans over time and catch problems the moment they appear — not crawl-order noise.

Track Your Progress Over Time

Save every audit locally and compare results across weeks or months, so you can confirm whether your fixes actually moved the needle or if new problems crept in.

Export Everything You Need

Export discovered pages and flagged issues as CSV for spreadsheets and automation, or generate an XML sitemap from every URL found during the crawl.

See the Output

SEO audit reports that make you look professional

Every scan produces a self-contained HTML report you can hand to a client or keep for your records. Scores, prioritized issues, fix guidance, and a complete page inventory — all in one portable file that opens in any browser. See the full documentation for details on every report section.

  • Site health score (Excellent / Good / Needs Work / Poor)
  • "Fix These First" priority section so you know where to start
  • Issues grouped by type with plain-language explanations
  • Full page inventory with status codes and metadata
  • CSV and XML sitemap exports alongside the report

report.html

Self-contained HTML report

Open in any browser — no server required

Overview

Pages tab — discovered pages with status codes

Pages tab — discovered pages with status codes

Pages

Issues tab — detected problems with fix guidance

Issues tab — detected problems with fix guidance

Issues

Diagnostics — scan statistics and metrics

Diagnostics — scan statistics and metrics

Diagnostics

Generated HTML report — portable and self-contained

Generated HTML report — portable and self-contained

HTML Report

Quick Help guide & Activation page

Quick Help Guide & Activation page

Tom's Site Auditor v2.9.4

Windows 10/11 (64-bit) • Single portable EXE • ~3 MB • Updated February 2026

Download Free Trial (.zip)

Read the Documentation

7-day trial • All features included • No account required
Like it? Pay $29 once below and keep it forever.

Independent Software

Built and supported by one developer

I built Tom's Site Auditor because I needed a straightforward website crawler that worked offline and didn't cost a monthly fee. It's not backed by a company with a marketing department — I write the code, I use the tool on my own projects, and I handle every support request personally. When you buy a license, you're dealing directly with the person who made it, and I ship updates based on what users actually need.

What's included with the paid license

Beyond unlimited use of the desktop auditor, I include bonus tools and guides that take you from "issues found" to "issues fixed."

1. Site Fixer (PHP script) — bulk-fix common site issues in minutes instead of hours

  • Adds missing OpenGraph tags (so your pages look right when shared on social media)
  • Adds missing canonical tags
  • Adds missing meta descriptions (with review/edit before applying)
  • Adds missing image width/height to reduce layout shift
  • Generates a hub links page to help fix orphan pages
  • Creates automatic backups before making any changes

site-fixer.php

Site Fixer — scan results and one-click fix buttons

Site Fixer — scan your site and fix issues directly from the browser

2. Site Fixer User Guide — step-by-step instructions anyone can follow

  • Upload → Run → Preview → Apply → Delete
  • Safety checklist and common mistakes

3. SEO Dashboard (PHP script) — track and compare your site's SEO health over time

  • Upload scan data and monitor issues across crawls
  • Compare any two scans side-by-side (improved / regressed / new)
  • Priority scoring by severity and affected page count
  • Filter by status code, SEO rating, or issue type
  • Detect template-level issues affecting 60%+ of pages
  • One-click print-ready client reports
  • Password-protected with IP whitelist support
  • Zero dependencies — single PHP file, any standard hosting

Dashboard

SEO Dashboard — summary view with severity breakdown and charts

Summary view — severity breakdown and charts

Comparison

SEO Dashboard — comparison mode showing new, fixed, and persistent issues

Comparison mode — track what changed between scans

4. SEO Guide (Beginner → Medium) — 19-page practical, no-hype guide

  • How to interpret the audit report
  • What to fix first and why
  • Metadata basics: titles, descriptions, canonical, OpenGraph
  • Common site structure mistakes and quick wins

All extras are delivered along with your license key after purchase.

Free Trial

7-Day Trial

FREE

The complete app, fully unlocked. No credit card, no account, no strings.

  • All features included
  • All scan modes enabled
  • HTML, CSV, and XML exports
  • Full site reports
  • Scan history and comparison
  • Custom scan profiles
  • 7 days from first run
  • No install — just unzip and run

Download Free Trial

Full Version

Full License

$29

One payment. Unlimited use. Free updates for life.

  • Unlimited usage — no expiry
  • All current and future features
  • Free lifetime updates
  • License locked to your PC
  • No subscriptions, ever
  • Site Fixer (bulk-fix common issues)
  • SEO Dashboard (track progress over time)
  • Site Fixer user guide
  • Practical SEO Guide (Beginner → Medium)

Upgrade to Full License — $29

Ready to upgrade? Here's how it works

After you've downloaded and tested the full 7-day trial, upgrading is simple:

1

Send payment of $29 USD via PayPal

Use the PayPal link below or send manually. That's the full price — no hidden fees, no recurring charges.

2

Send your Machine Code

Open the app, go to Help → About, and copy your Machine Code. Submit it along with your PayPal Transaction ID using the license request form.

3

I'll send your license key + all bonus tools

I'll email your license key, Site Fixer Script, SEO Dashboard, user guides, and SEO guide — typically within 24 hours. Enter the key in the app and you're set for life.

FAQ

The trial is really the full app? No limits?

Yes. The 7-day trial includes every feature, every scan mode, and every export option. Nothing is locked or restricted. If you like it after testing, purchase a license to keep using it beyond the trial period.

What happens when the 7-day trial expires?

The app stops working until you enter a license key. Your scan history and saved data are not deleted — everything is still there when you activate the full version. No reinstall needed.

Is there a refund policy?

No refunds. The free 7-day trial gives you full access to every feature so you can thoroughly test the app before deciding to purchase.

Can I use it for client work?

Yes. The full license covers personal and professional use, including generating reports for clients.

Does activation require internet?

No internet connection is needed for activation. The app runs fully offline.

Can I move the license to another PC?

If you change or reinstall your system, you can re-activate the license. For special cases, contact support.

Why is the license issued manually?

This is a small, independent project — not a faceless corporation. I personally verify and issue every license. It keeps the process fair, ensures you get quality support, and means you're always dealing with the person who actually built the software.

Under the Hood

An SEO scanner built for reliability, not hype

Native Windows application. Not Electron, not a browser wrapper, not Node.js. A single portable EXE with zero external dependencies.

  • C++17 with native Win32 API and WinHTTP
  • Single portable EXE — no installer required
  • BFS crawler with configurable depth and delay
  • NDJSON streaming for crash-tolerant data storage
  • Atomic file writes to prevent data corruption

Language C++17

Dependencies Zero

Platform Windows

Report HTML / CSV

Verify your download (SHA-256 checksum)

Optionally verify the ZIP file hasn't been modified by comparing its SHA-256 checksum:

6F47DDC51D09EFD1EF8F196E453A67EC4B9E417F2EB38371B33A9718F27A584D

You can use Tom's Quick Hash Checker (instructions) to verify, or run certutil -hashfile TomsSiteAuditor.zip SHA256 in Windows Command Prompt.

Step 1 — Send Payment

Pay $29 USD using PayPal (prefilled link), or manually send to:

Save your PayPal Transaction ID from the confirmation email — you'll need it in the next step.


Step 2 — Submit Your Details

After payment, fill in this form so your license key can be issued to the correct PC. Your Machine Code can be found in the app under Help → About.

What would a full SEO audit of your site reveal?

Download the free trial, scan your site, and get every issue in a clear report. If it saves you time, upgrade once for $29 and keep it forever.