Free SEO Site Audit
Crawl up to 100 pages and find broken links, redirect problems, missing titles, heavy images, AI and AdSense issues. Get a health score, clear fixes, progress tracking and a branded PDF report. No login needed.
Peplio’s free SEO audit tool crawls up to 100 pages of your website and runs 50+ checks for broken links, redirect problems, missing titles and descriptions, heavy images, HTTPS issues, AI readiness and AdSense readiness. You get a health score, eight thematic scores, plain-English fixes and a branded PDF report. No signup, no install.
Most SEO problems are invisible until you look for them. A broken internal link, a noindex tag left on an important page, or a sitemap full of redirects can quietly hold your rankings back for months. A good free SEO audit tool finds these problems in minutes and tells you exactly what to fix first.
I built this audit for Peplio because I needed it myself. I run digital marketing at Demech Chemical Products and manage Peplio on my own, and paying for a big SEO suite just to audit two websites never made sense. So I built the audit I wanted: complete checks, clear fixes, and a report I can hand to anyone.
Key Takeaways
- The tool crawls up to 100 pages from your homepage and XML sitemap and runs 50+ checks.
- You get a health score, errors, warnings and notices, plus eight thematic scores.
- Every issue shows the affected URLs, why it matters and how to fix it, with WordPress steps.
- Your last 10 audits are saved in your browser, so you can track progress without an account.
- Download a branded PDF report or a CSV of every issue to share with your team or clients.
What Is a Free SEO Audit Tool?
A free SEO audit tool crawls your website the way a search engine does and checks each page against technical and on-page SEO best practices. It looks for anything that stops Google from crawling, understanding or ranking your pages, from server errors to missing meta descriptions.
Google explains the basics every site should get right in its SEO Starter Guide. An audit turns that guidance into a checklist for your own site, page by page.
How This Free SEO Audit Tool Works
This free SEO audit tool runs in three steps every time you click Start audit:
Step 1: Site settings and sitemap
The audit checks your HTTPS setup, robots.txt, XML sitemap, llms.txt and ads.txt, and tests whether missing pages return a proper 404. It then reads your sitemap to find the pages to crawl, following Google’s guidance on sitemaps.
Step 2: Crawl up to 100 pages
Starting from your homepage and sitemap, it visits up to 100 pages and records status codes, redirects, titles, descriptions, headings, word count, canonical tags, schema, images and links. It respects your robots.txt, so it only crawls pages you allow.
Step 3: Check links, images and build the report
It tests internal links, a sample of external links and your images for errors and file size, then scores everything and shows the issues ordered by severity.
Checks across crawlability, HTTPS, links, on-page SEO, images, international SEO, AI readiness and AdSense readiness.
What the Free SEO Audit Tool Checks
- Crawlability: 4xx and 5xx pages, broken internal links, redirect chains and loops, noindex pages in the sitemap, canonical problems, soft 404s and robots.txt blocks. Google covers these errors in its guide to HTTP status codes and network errors.
- HTTPS: missing HTTPS, HTTP that does not redirect, and mixed content.
- On-page SEO: missing or duplicate titles and descriptions, H1 problems, thin pages, missing schema, missing link preview tags and slow server response. See Google’s advice on title links and canonical URLs.
- Links: pages with few internal links, sitemap pages with no internal links, and broken external links.
- Images: broken images, images over 200 KB, missing alt text and missing dimensions, based on Google image best practices.
- International SEO: invalid hreflang codes, missing return links and missing x-default.
- AI readiness: search and AI bots blocked in robots.txt, missing max-image-preview:large and llms.txt.
- AdSense readiness: missing or mismatched ads.txt and missing privacy, about or contact pages.
Why Use a Free SEO Audit Tool Instead of Checking by Hand?
You can check a few pages manually, but broken links and duplicate titles hide across dozens of pages. A free SEO audit tool checks every page the same way, every time, and remembers the result.
- It finds hidden problems. Redirect chains, canonical mistakes and noindex tags are invisible when you browse your own site.
- It prioritises for you. Errors come first, so you fix what hurts rankings most before polishing notices.
- It tracks progress. Re-audit after fixing and see exactly what improved since last time.
- It gives you a report. The PDF is ready to send to a developer, client or manager.
7 Reasons This Free SEO Audit Tool Stands Out
1. No signup, no install, no verification
Enter your website and start. There is no account, desktop app or Search Console verification step.
2. A health score and eight thematic scores
See your overall health plus separate scores for crawlability, HTTPS, links, on-page SEO, images, international SEO, AI readiness and AdSense readiness.
3. Fixes you can actually follow
Every issue explains why it matters and how to fix it, with Rank Math and Yoast steps when your site runs WordPress.
4. AI and Discover checks
The free SEO audit tool flags blocked AI search bots and missing large image previews, issues most audit tools do not check yet. For a deeper look, use the AI Crawler Checker and Google Discover Checker.
5. AdSense readiness
If you run AdSense, the audit checks your ads.txt against the publisher ID on your pages and looks for the trust pages AdSense expects.
6. Progress tracking without an account
Your last 10 audits are saved in your browser, with a health score chart and a “since the last audit” comparison.
7. Branded PDF and CSV reports
Download a clean PDF with your health score, thematic scores and every issue, or a CSV with every affected URL.
How to Fix What the Free SEO Audit Tool Finds
- Fix errors first. Broken pages, broken links, noindex pages in the sitemap and HTTPS problems have the biggest impact.
- Then clean up warnings. Missing descriptions, thin pages, redirect chains and heavy images come next. Compress images with the Peplio Image Optimizer.
- Check your speed. Slow pages show up as warnings. Test them with the Website Speed Analyzer and review your Core Web Vitals.
- Fix robots.txt and sitemap issues. Use the Robots.txt and Sitemap Generator if yours are missing or broken.
- Re-audit. Click Re-audit now and confirm the fixes in the “since the last audit” panel.
Free SEO Audit Tool vs Other Site Audit Tools
Here is an honest comparison between Peplio’s free SEO audit tool and other popular options:
| Feature | Peplio (Free) | Screaming Frog free | Ahrefs Webmaster Tools | Semrush |
|---|---|---|---|---|
| Price | Free | Free (desktop app, up to 500 URLs) | Free with site verification | Paid plans, limited free account |
| Signup or install | None | Install software | Account + verification | Account |
| Pages per audit | Up to 100 | Up to 500 | Depends on plan | Depends on plan |
| Plain-English fixes | Yes, with WordPress steps | No | Partial | Yes |
| AI readiness checks | Yes | No | No | Partial |
| AdSense readiness checks | Yes | No | No | No |
| Branded PDF report | Yes, free | Paid version | No | Paid plans |
| Progress tracking | Yes, saved in browser | No | Yes | Yes |
Competitor details based on their public plan pages as of September 2026. Plans change often, so check each provider for current limits.
See everything in one dashboard
Peplio SEO Studio brings your site audit, speed, AI visibility and Google Discover checks together, free and with no login.
Open Peplio SEO StudioFrequently Asked Questions
Is this free SEO audit tool really free?
Yes. This free SEO audit tool has no signup, no credit card and no paid tier for the core audit. You can audit up to 100 pages per run, re-audit whenever you make changes, and download the PDF and CSV reports at no cost.
How many pages does the audit check?
Each audit crawls up to 100 pages, starting from your homepage and your XML sitemap. That covers most small and medium websites completely. On larger sites it checks the first 100 pages it finds, which usually includes your most important ones.
Do I need to verify my website or install anything?
No. Unlike tools that require Search Console verification or a desktop install, you just enter your website address and start the audit in your browser.
Where are my audit results saved?
Your last 10 audits for each website are saved in your own browser, so you can track your health score over time without creating an account. Clearing your browser data removes them, so download the PDF if you want a permanent copy.
Will the free SEO audit tool give the same result every time?
Yes, if nothing on your site has changed, the free SEO audit tool finds the same issues. Server response times can vary slightly between runs. Use Re-audit now after fixing something to get a fresh result and see what improved.
Can I audit a competitor’s website?
Yes. You can audit any public website. The crawler follows each site’s robots.txt rules and only checks pages the site allows.
What does the health score mean?
The health score reflects how many of your pages are free of errors and warnings, adjusted for site-wide problems like missing HTTPS. Fixing errors raises it the most, followed by warnings. Notices are good practice but affect the score only slightly.
Start Your Free SEO Audit Now
Scroll back to the top, enter your website and start the audit. In a few minutes you will know your health score, your biggest problems and exactly how to fix them. That is what a free SEO audit tool should do: no signup, no guesswork, just a clear list of fixes.
After your audit, track your pages in Google Search Console, find link opportunities with the Backlink Prospector, or explore all free Peplio SEO tools. You can also learn SEO the fun way with the Peplio Digital Marketing Comic series.