How to Run a Complete Website SEO Audit Free: Step-by-Step Using Online Tools

Most websites leave ranking potential on the table — not because of bad content, but because of fixable technical and on-page issues nobody has spotted yet. Running a full SEO audit tool free workflow is the fastest way to find those gaps and close them before a competitor does. This guide walks you through a repeatable, zero-cost audit process using Google Search Console, PageSpeed Insights, structured data validators, and dedicated SEO checkers — with Seojama's free SEO audit as your central hub to tie it all together.

Why a Free SEO Audit Still Delivers Professional Results

Paid enterprise platforms charge hundreds of dollars a month. But the data they surface — crawl errors, Core Web Vitals, missing meta tags, broken structured data — is largely available for free if you know where to look. The real skill is not paying for a tool; it's knowing which signal to check first and what to do about it.

The audit process below follows a priority stack: fix what costs you the most traffic first, then move down to refinements. That means technical health before content, indexation before optimization, and page speed before schema markup. Skipping this order is the single most common mistake DIY auditors make — they spend hours polishing title tags on pages Google can't even crawl.

Each step below names the exact free tool to use, what to look for, and the specific action to take. No vague advice. Let's start.

Step 1 — Confirm What Google Can Actually See

Before optimizing anything, verify your site is properly indexed. Open Google Search Console (GSC) and navigate to Index > Pages. You'll see a breakdown of indexed vs. non-indexed URLs, each with a reason code.

Pay close attention to these non-indexation reasons:

• Crawled — currently not indexed: Google visited the page but chose not to include it. Usually signals thin content or a duplicate.
• Discovered — currently not indexed: Google knows the URL exists but hasn't crawled it yet. Often caused by a weak internal link structure or a slow crawl budget.
• Blocked by robots.txt: A misconfigured robots.txt is silently hiding pages. This is a critical fix.
• Noindex tag detected: Someone added a noindex directive — intentionally or by accident. Check staging environments especially.

Also run a site:yourdomain.com search in Google. If the count is dramatically lower than your actual page count, you have an indexation problem worth diagnosing immediately. GSC's URL Inspection tool lets you test individual pages and request re-indexing after fixes.

Step 2 — Audit On-Page SEO Factors Across Your Site

Once you know Google can see your pages, check whether those pages are optimized. This is where a dedicated SEO checker tool saves enormous time versus manual inspection.

Seojama scores any URL across 20+ on-page SEO factors in seconds. Paste your URL into the scanner and you'll get a prioritized list of issues — not an overwhelming dump of every possible signal, but a ranked action list. That distinction matters. A tool that flags 200 issues without ranking them is noise, not signal.

The key on-page elements to audit manually or with a checker:

1. Title tag: Should be 50–60 characters, contain the primary keyword near the front, and be unique across every page.
2. Meta description: 150–160 characters, written to earn the click, not just stuff keywords. Missing meta descriptions cost you click-through rate even when you rank.
3. H1 tag: One per page. It should match the page's primary intent — not the same text as the title tag, but closely aligned.
4. Image alt text: Every meaningful image needs a descriptive alt attribute. Google uses this for image search and accessibility signals.
5. Internal linking: Orphan pages — pages with zero internal links pointing to them — rarely rank. GSC's Links report shows your most-linked internal pages; the bottom of that list reveals your orphans.
6. Canonical tags: Duplicate content from URL parameters, trailing slashes, or HTTP/HTTPS variants confuses Google. A canonical tag tells it which version to index.

If you want to go deeper on any of these factors, Seojama's on-page SEO guide explains each signal with concrete examples and fix instructions.

Step 3 — Measure Page Speed and Core Web Vitals

Google made Core Web Vitals an official ranking signal in 2021. Slow pages don't just frustrate users — they rank lower. PageSpeed Insights gives you field data (real user measurements) and lab data (simulated load) for any public URL, completely free.

The three metrics that matter most:

• LCP (Largest Contentful Paint): How long until the main content loads. Target: under 2.5 seconds.
• INP (Interaction to Next Paint): How quickly the page responds to user input. Target: under 200 milliseconds.
• CLS (Cumulative Layout Shift): How much the page jumps around as it loads. Target: under 0.1.

Don't just test your homepage. Test your highest-traffic landing pages too — those are the ones where speed problems directly cost you conversions and rankings. PageSpeed Insights also surfaces specific opportunities like "Eliminate render-blocking resources" or "Properly size images," with estimated time savings attached. Fix the highest-saving items first.

One trade-off worth knowing: lab scores and field scores often diverge. A page can score 95 in the lab but fail field data thresholds because real users on mobile 4G connections experience it differently. Always prioritize the field data (the top section of the PageSpeed report) over the lab score.

Step 4 — Validate Your Structured Data

Structured data (schema markup) helps Google understand what your content is about and can unlock rich results — star ratings, FAQ dropdowns, event details — that dramatically increase click-through rates. But broken schema is worse than no schema: it can trigger a manual action or simply waste crawl budget.

Use Google's Schema Markup Validator to check any page for errors and warnings. Common issues include:

• Missing required properties (e.g., a Product schema without a name or offers property)
• Incorrect data types (passing a string where a URL is expected)
• Orphaned schema — markup that exists but doesn't match any visible content on the page

If you need to add or fix schema quickly, Seojama's free schema generator tool lets you build valid JSON-LD markup without writing a single line of code. Generate it, paste it into your page's <head>, and re-validate.

Step 5 — Audit Your Backlink Profile and Authority Signals

Free backlink data is limited compared to paid tools like Ahrefs or Semrush — but GSC's Links report gives you the real picture of what Google has actually processed. Navigate to Links in GSC and review:

• Top linked pages: Which of your pages earn the most external links? These are your authority hubs — link internally from them to pages you want to rank.
• Top linking sites: Are the referring domains relevant to your niche? A hundred links from unrelated or low-quality sites can hurt more than help.
• Anchor text distribution: Over-optimized exact-match anchor text (e.g., every backlink saying "buy cheap shoes") is a Penguin-era red flag that still matters.

You don't need to disavow links unless you see a clear pattern of spammy, manipulative links pointing at your site. Most natural link profiles have some noise — that's expected. Only act if GSC shows a manual action under Security & Manual Actions.

Step 6 — Check Mobile Usability and HTTPS

Google indexes the mobile version of your site first. A page that looks fine on desktop but breaks on a 390px screen is a ranking liability. GSC's Mobile Usability report (under Experience) flags specific issues like:

• Text too small to read
• Clickable elements too close together
• Content wider than the screen

HTTPS is a baseline ranking signal — not a differentiator, but a requirement. If any pages still serve over HTTP, fix that before anything else. GSC's Security Issues report will flag mixed content warnings too, where a page loads over HTTPS but pulls in HTTP resources like images or scripts.

Putting It All Together: Your Repeatable Audit Workflow

Running these checks once is useful. Running them monthly is how you actually outrank competitors over time. Here's the repeatable sequence:

1. Check GSC for new indexation errors and crawl anomalies.
2. Run your key landing pages through Seojama's SEO checker for on-page scores.
3. Test PageSpeed on any pages you've recently updated.
4. Validate schema on pages where you've added or changed markup.
5. Review the GSC Links report for new referring domains worth nurturing.
6. Check Mobile Usability and Security Issues for anything new.

The whole workflow takes under two hours once you've done it once. The first time takes longer because you'll be fixing issues as you find them — budget a full day for a site with 50+ pages.

Pro tip: Document your baseline scores before making changes. Without a before/after comparison, you can't measure what actually worked. A simple spreadsheet tracking your Seojama score, LCP, and GSC impressions month over month is enough.

Where Seojama Fits as Your Free SEO Audit Hub

Each tool above covers one slice of the audit. Seojama is designed to be the layer that connects them — scanning your site across 20+ on-page factors, scoring your website SEO score, and giving you a prioritized action list rather than a raw data dump. You don't need to interpret the output; the platform tells you what to fix first and why.

Pro users get AI-powered workspaces that crawl hundreds of pages, generate individual audit reports per URL, and even publish daily blog posts automatically — turning a manual monthly process into a continuous, automated SEO engine. But the free tier is genuinely useful: paste any URL and get a scored report in under 30 seconds.

Ready to see where your site stands right now? Run your free SEO scan on Seojama and get your prioritized fix list in seconds. No signup required to get your first score.

Common Mistakes That Undermine Free SEO Audits

Even with the right tools, audits fail for predictable reasons. Avoid these:

• Auditing the wrong pages: Focus on pages that already get impressions in GSC. Optimizing a page with zero impressions is lower priority than fixing a page ranking on page two.
• Fixing symptoms, not causes: Dozens of pages with thin content usually share a structural cause — a category template, a tag archive, or auto-generated pages. Fix the template, not each page individually.
• Ignoring mobile-first signals: Running PageSpeed only on desktop misses the data Google actually uses for ranking decisions.
• Over-indexing on domain authority: DA/DR scores from third-party tools are estimates, not Google signals. GSC's actual impressions and clicks data is always more reliable.
• Not re-crawling after fixes: Use GSC's URL Inspection tool to request re-indexing after you've made changes. Don't wait for Googlebot to find updates on its own — especially for time-sensitive fixes.

A free SEO audit is only as good as the action it produces. The tools are free. The discipline to follow through is what separates sites that climb from sites that stagnate. Discover what's holding your site back — start with a Seojama scan, layer in GSC and PageSpeed data, and work the priority list one fix at a time.