25+ SEO Checks
Missing titles, meta descriptions, H1 tags, broken internal links, broken external links, missing alt text, redirect chains, and more.
Windows Desktop • 100% Offline • Zero Dependencies
Website Health Scanner,
Fully Offline.
Crawl any website from your desktop. Detect SEO issues, broken links, missing tags, and generate portable HTML reports — all without cloud services, subscriptions, or sending your data anywhere.
25+
Issue Types Detected
7 Day
Free Trial
0
External Dependencies
HTML Reports
Self-contained, portable, shareable
Deterministic Mode
Repeatable, comparable scans
Scan History
Track changes over time
Features
Everything runs on your machine
Crawl, analyze, and report — without uploading anything, creating an account, or paying monthly.
Portable HTML Reports
Self-contained HTML files with inlined CSS. Open in any browser, email to clients, archive for later — no server needed.
100% Offline
No cloud, no API keys, no accounts. Everything runs locally on your PC. Your scan data stays on your machine.
Deterministic Scanning
Repeatable crawl order means you can compare results between scans and spot real regressions — not crawl-order noise.
Scan History & Comparison
Save scans locally. Compare them over time. Detect regressions when a site gets worse between audits.
CSV & Sitemap Export
Export pages and issues as CSV for spreadsheets, or generate an XML sitemap from discovered pages.
Simple Workflow
From URL to report in minutes
No setup, no configuration files, no learning curve.
1
Enter a URL
Paste the website address and set your preferred scan depth and options.
2
Scan
The crawler discovers pages, checks links, extracts SEO signals, and logs issues.
3
Report
Get a portable HTML report with scores, priorities, and actionable fix guidance.
Screenshots
See it in action
Click any screenshot to view full size.
Pages tab — discovered pages with status codes
Issues tab — detected problems with fix guidance
Diagnostics — scan statistics and metrics
Generated HTML report — portable and self-contained
Quick Help Guide & Activation page
See the Output
Professional reports, ready to share
Every scan produces a self-contained HTML report. Scores, prioritized issues, fix guidance, and a full page inventory — all in one portable file you can email to clients or archive for yourself.
- Site health score (Excellent / Good / Needs Work / Poor)
- "Fix These First" priority section
- Issues grouped by type with explanations
- Full page inventory with status codes and metadata
- CSV and XML sitemap exports alongside the report
Self-contained HTML report
Open in any browser — no server required
Under the Hood
Built for reliability, not hype
Tom's Site Auditor is a native Windows application. No Electron, no browser wrapper, no Node.js runtime. Just a single EXE that runs on your machine 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
Built For
People who want clear answers, not dashboards
If you've ever wondered "is this website actually healthy?" and wanted a straight answer without signing up for a $99/month subscription — this is for you.
Freelancers & Agencies
Run a scan, generate a report, send it to the client. Professional output without a monthly tool subscription.
Site Owners
Know what's wrong with your site in plain language. Prioritized issues, fix guidance, and a clear health score.
Developers
Deterministic mode for reproducible results. CSV exports for scripting. No black-box scores — every issue is explainable.
Download
Try it free for 7 days
The trial is the full application with no feature limits. Just unzip and run — no installer, no admin rights needed.
Tom's Site Auditor
Windows 10/11 (64-bit) • Single portable EXE • ~3 MB
Download Free Trial (.zip)
7-day trial • All features included • No account required
After trial: purchase a license below to continue using the app.
Pricing
One price. No subscriptions.
Try it free, then unlock the full version when it fits your workflow.
Free Trial
7-Day Trial
FREE
Test Tom's Site Auditor on your own websites with no commitment.
- Full version, all features
- All scan modes enabled
- HTML, CSV, and XML exports
- Create Site Reports in HTML
- Scan history and comparison
- 7 days from first run
- No install, just unzip and run
Full Version
Full License
$29
Unlock unlimited use for your auditing workflows.
- Unlimited usage
- All current and future features
- Free product lifetime updates
- License key locked to your PC
- Single-PC license
- No subscriptions, ever
- PHP Site Fixer script (Massive time saver)
- Site Fixer script user guide manual
- Practical SEO Guide (Beginner → Medium)
How licensing works
After purchase, you'll receive a license key linked to your PC's unique "Machine Code" (found in the app's About section). Enter the key in the app to unlock the full version.
- Free trial is time-limited (7 days)
- Full license removes the trial period — no reinstall needed
- Normal usage works offline after activation
- You can re-activate if you reinstall Windows
Licensing FAQ
Is there a refund policy?
No refunds. A full free 7-day trial is provided so you can fully test the app before purchasing.
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?
Activation may require a brief internet connection. After 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.
Purchase
Buy a License
$29 USD — one-time fee. Licenses are issued manually within 24 hours after payment verification. Your license is locked to one PC (based on the Machine Code shown inside the app).
PayPal Payment
Pay using PayPal (prefilled), or manually send $29 USD to:
After payment, complete the License Request Form below with your PayPal Transaction ID and your app's Machine Code.
Important Notes
Licenses are verified and issued manually to keep the process fair and personal.
- One license per payment.
- License is tied to the Machine Code shown in the app.
- Your unlock key will only work on that PC.
- Licenses are issued manually within 24 hours after verification.
Paid Upgrade Includes
These extras are delivered with your license key after purchase.
1. TomDahne Site Fixer (PHP script) — bulk-fixes common site issues safely
- Adds missing OpenGraph tags (social preview cards)
- 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 (discoverability)
- Creates automatic backups before making any changes
2. Site Fixer User Guide — beginner-friendly step-by-step instructions
- Upload → Run → Preview → Apply → Delete
- Safety checklist and common mistakes
3. SEO Guide (Beginner → Medium) — practical, no-hype guide
- How to interpret the audit report
- Priorities: what to fix first and why
- Metadata basics: titles, descriptions, canonical, OpenGraph
- Common site structure mistakes and quick wins
Delivered with your license key after purchase. The Site Fixer is a temporary tool: upload → fix → delete.
License Request Form
After you've paid, submit this form so the license can be issued to the correct PC.
See what's wrong with your site
Download the free 7-day trial and run your first scan in under a minute.