Niche Site SEO Audit Checklist: 20 Checks for AdSense Approval and Higher RPM

Most niche site audits stall because they are too vague. "Improve content quality" is not an action. This checklist gives you 20 specific, pass/fail checks across four categories: content quality, technical health, AdSense policy readiness, and monetization efficiency. Work through each section in order. Fix what fails before moving to the next category. A site that clears all 20 is significantly more likely to pass AdSense review, hold rankings through algorithm updates, and earn a higher RPM than one that does not.

Category 1: Content Quality

Content quality is the primary factor in AdSense approval decisions and the primary factor in sustained organic rankings. These seven checks address the specific signals Google uses.

Check 1: No Indexed Page Is Under 300 Words

Pull your indexed page list from Google Search Console (Index › Pages › Indexed). For each URL, check the word count. Pages under 300 words of original text, not counting navigation, sidebars, or boilerplate, qualify as thin content under AdSense guidelines. If more than 15% of your indexed pages fail this check, the entire site is at risk.

Fix: For supporting pages and category pages, expand to 300-plus words with genuinely useful context. For pages that cannot justify 300 substantive words, add a noindex meta tag or a canonical pointing to a fuller page.

Check 2: Primary Articles Are 700 Words or More

Your money pages, the articles you are competing to rank, should average 700 to 1,500 words for typical how-to or review queries, and 1,500 to 3,000 words for comparison or best-of queries. Length alone does not equal quality, but reviewers and algorithms both use word count as a proxy for completeness. A 250-word "guide" on a query where the top-ranking competitors have 1,200 words signals low effort.

Fix: Expand underweight primary articles with additional H2 sections covering the sub-questions a reader would naturally have after reading your current content. Check Search Console to confirm which of these pages have impressions (they are ranking, meaning they have value to expand), and prioritize accordingly.

Check 3: No Duplicate or Near-Duplicate Pages Are Indexed

Two pages covering the same query with substantially identical content trigger both a crawl waste problem and a content quality flag. Common causes: calculator or tool pages with only a slight variation (cubic yards vs cubic feet), multiple location pages using a template with one city name swapped in, or blog posts on the same topic published at different dates without meaningful differentiation.

Fix: Identify duplicates via Google Search Console (filter for pages with very similar impressions and overlapping keyword sets), or by running your site through a site audit tool. For true duplicates, use a canonical tag pointing to the stronger URL. For near-duplicates, either merge them into a single comprehensive page with a redirect, or differentiate them enough that each answers a distinct query.

Check 4: Every Article Has an Author or Publication Byline

Google’s Helpful Content guidance explicitly considers whether content demonstrates first-hand expertise or editorial oversight. Anonymous content published at scale is a consistent signal in low-quality assessments. A byline, even a pen name tied to an About page, combined with a brief credential statement ("10 years as a DIY contractor") materially improves E-E-A-T signals.

Fix: Add a byline block to your article template. It does not require a real name, but it does require a consistent author identity with an About page that establishes why that author has standing to write on this topic.

Check 5: No AI-Generated Content Is Published Verbatim Without Human Editorial Review

Using AI to generate content is not prohibited by AdSense policy. Publishing verbatim AI output without human review is a problem, not because of the AI origin, but because unedited AI output frequently produces generic, factually imprecise, or repetitive content that fails the "does this add value?" question reviewers use. If AI-generated text passes a human editorial review and adds genuine original insight, it is fine. If it was published directly from the model output without review, it is a content quality risk.

Fix: Review any content produced with AI assistance for: factual accuracy, specific data points that can be verified, and whether the article answers the query better than the current top result. Generic statements ("there are many options to consider") should be replaced with specific, useful content ("the three options worth considering are X, Y, and Z, and the difference that matters is...").

Check 6: Internal Linking Is Consistent and Not Orphaned

An orphaned page is one with no internal links pointing to it. Google discovers pages through links; a page no other page links to may not be crawled regularly and is unlikely to rank well. Beyond crawlability, internal links pass topical authority between related pages, helping the site rank as an authority on its niche rather than a collection of disconnected articles.

Fix: For any page added in the last 6 months, confirm at least two other relevant pages on the site link to it. Add a "related articles" or "you might also like" block to article templates if your CMS supports it. Run your site through Search Console to identify pages with no inbound internal links (Crawl › Internal Links shows link counts per URL).

Check 7: Category or Topic Pages Exist and Are Substantive

A niche site publishing 40 individual articles with no organizing category pages misses a significant ranking opportunity. Category pages serve as topical hubs that collect ranking signals from multiple articles and signal clear site structure to crawlers. For AdSense, they also demonstrate that the site has intentional editorial scope rather than random article accumulation.

Fix: Identify your top 3-5 content themes and create or improve a landing page for each. Each category page should have 200-plus words of introductory content explaining what the reader will find, plus links to the 5-10 most important articles in that category.

Category 2: Technical Health

Check 8: Sitemap Is Submitted and Indexed

A submitted sitemap tells Google which URLs to crawl and how frequently content is updated. Go to Google Search Console › Sitemaps and confirm your sitemap URL appears with a "Success" status and a discovered URL count that matches your expected page count. If it shows "Couldn’t fetch" or "Has errors," the sitemap is blocking crawl.

Fix: Regenerate and re-submit the sitemap. Common causes of fetch failures: a redirect chain between the submitted URL and the actual file, a malformed XML structure, or a robots.txt rule that blocks the sitemap path.

Check 9: Robots.txt Does Not Block Key Pages

A misconfigured robots.txt can silently block entire directories from being crawled. Visit yourdomain.com/robots.txt directly and check for any Disallow rules covering paths that contain indexable content. This is particularly common after CMS migrations where the new platform generates a default robots.txt that differs from the previous one.

Fix: Ensure robots.txt allows crawling of all directories containing indexed content. The only paths that should be disallowed are admin panels, checkout flows, and duplicate utility paths (e.g., print versions of pages).

Check 10: Core Web Vitals Pass in Search Console

Go to Google Search Console › Experience › Core Web Vitals. Confirm that your site has more pages in the "Good" bucket than the "Poor" bucket. Pay specific attention to LCP (Largest Contentful Paint) and INP (Interaction to Next Paint), which are the two most commonly flagged metrics for content sites. Poor Core Web Vitals reduce ad fill rates directly, as programmatic auctions time out on slow-loading pages.

Fix: Use PageSpeed Insights on your highest-traffic pages. The most common fixes for niche sites: convert images to WebP and add explicit width/height attributes to eliminate layout shift, defer non-critical JavaScript, and serve your site through a CDN (Cloudflare’s free plan handles this for most niche sites).

Check 11: HTTPS Is Active and Enforced on All Pages

AdSense requires HTTPS. Beyond policy requirements, mixed content warnings (HTTPS page loading HTTP assets) suppress programmatic demand because certain ad buyers will not bid on non-secure inventory. Visit your site on HTTP and confirm it redirects to HTTPS. Check that all images, scripts, and stylesheets are also loaded over HTTPS using your browser’s developer tools (Network tab, filter by HTTP).

Check 12: No Pages Return 4xx or 5xx Errors in Search Console

Go to Search Console › Index › Pages and check the "Not indexed" sections for "Not found (404)" and "Server error (5xx)" categories. Any pages returning errors that were previously indexed, or that other pages link to, are crawl waste and potential UX damage. A site with more than 5% of its indexed page count in error state signals poor maintenance to both crawlers and reviewers.

Check 13: Mobile Rendering Is Correct

Google indexes the mobile version of pages (mobile-first indexing). Use Search Console’s URL Inspection tool on your 5 highest-traffic pages and view the rendered screenshot. Confirm that: all content is visible (no truncation), text is readable at mobile size without zooming, and tap targets (links and buttons) are large enough to tap without accidentally hitting adjacent elements. Mobile ad fill rates are typically higher than desktop for content sites, so mobile rendering issues directly reduce RPM.

Category 3: AdSense Policy Readiness

Check 14: ads.txt Is Present, Accessible, and Correct

Visit yourdomain.com/ads.txt directly. Confirm it returns a plain text file (not a redirect to homepage or a 404). The file must include the line: google.com, pub-XXXXXXXXXXXXXXXX, DIRECT, f08c47fec0942fa0 with your actual pub-ID from your AdSense account. A missing or broken ads.txt prevents most programmatic buyers from bidding on your inventory, cutting RPM by 40-60%.

Check 15: Site Has Required Legal Pages (Privacy, Contact, About)

AdSense policy requires a Privacy Policy that discloses the use of cookies and third-party advertising. Reviewers also look for an About page and a Contact page as evidence of a legitimate, accountable publisher. All three should be linked from the site footer, reachable from any page on the site without additional navigation steps. The Privacy Policy must explicitly mention Google AdSense and the DoubleClick cookie.

Check 16: No Prohibited Content Categories Are Indexed

Even a small percentage of prohibited content will cause rejection or account termination. AdSense prohibits: adult content (including mildly suggestive imagery in some contexts), drug-related content (including legal cannabis in most territories), weapons, hacking/cracking tools, gambling without appropriate licenses, and content that promotes violence or racial intolerance. Run a full content inventory if your site covers any adjacent topics and confirm no indexed pages fall into these categories, including user-generated content in comments.

Check 17: Policy Center Is Clean (for Existing AdSense Accounts)

If you already have an AdSense account, go to AdSense › Policy Center. Any active policy flags, ad serving limits, or site warnings will appear here. Unresolved flags reduce ad serving sitewide and escalate to account suspension if ignored. Fix all active flags before addressing RPM optimization.

Category 4: Monetization Efficiency

Check 18: Your Traffic Is Primarily from High-RPM Geographies

Open AdSense Reports › By Country and sort by revenue. If more than 40% of your pageviews come from countries outside the US, UK, Canada, and Australia, and those views are producing disproportionately low revenue, you have a geographic monetization gap. This is not fixable through AdSense configuration, it requires directing content and SEO investment toward queries that attract US/UK/AU audiences.

Fix: Identify the specific topics attracting low-RPM international traffic (Search Console › Performance › filter by country) and compare to topics where your US audience dominates. Expand content investment in the latter category.

Check 19: Ad Placement Is Above the Fold on All Primary Templates

AdSense auto-ads place units algorithmically, but they consistently underperform manual ad placement on content-heavy pages because the algorithm is optimizing across millions of sites rather than your specific layout. A 728x90 leaderboard below the title and above the article body, combined with a 300x250 rectangle in the right sidebar or embedded mid-article, typically outperforms auto-ads on desktop. On mobile, a 320x50 or 320x100 banner sticky at the bottom outperforms inline auto-ads in most tests.

Fix: Use AdSense Experiments to test manual ad placements against your current auto-ads setup. Run the test for a minimum of 2 weeks and 1,000 impressions per variant before reading results.

Check 20: Page Speed on Top-Traffic Pages Is Under 2.5 Seconds LCP

Run your five highest-traffic URLs through Google PageSpeed Insights and record LCP for mobile. Pages with LCP above 4 seconds lose auction bids from programmatic buyers before the page finishes loading. The correlation between LCP and RPM is direct: a 1-second improvement on a page generating 10,000 monthly pageviews at $4 RPM is worth roughly $40/month in recovered ad revenue. For high-traffic pages, speed optimization has the clearest ROI of any technical fix.

Fix: The top causes of slow LCP on niche sites are: uncompressed images (convert to WebP, add loading="lazy" to below-fold images), render-blocking scripts (defer non-critical JS), and missing CDN (Cloudflare free plan). Fix in that order on your highest-traffic pages first.

How to Prioritize What You Find

After running all 20 checks, triage your findings this way:

1. Fix blocking issues first (Checks 14-17). Policy flags and ads.txt problems will prevent earning regardless of content quality. These are quick fixes with immediate revenue impact.
2. Fix technical indexation issues next (Checks 8-9, 11-12). If pages are not being crawled or indexed, content quality improvements are invisible to both Google and AdSense reviewers.
3. Prioritize content expansion on pages that already rank (Check 2). Expanding a page from 400 words to 900 words that already has 1,000 impressions per month in Search Console produces a faster return than publishing a new page from scratch.
4. Fix thin content sitewide before applying for AdSense (Check 1). Applying with thin pages present guarantees rejection. Fix first, then apply.
5. Optimize monetization only after the above are clean (Checks 18-20). Ad placement and RPM optimization on a site with policy flags or poor content quality is wasted effort.

Work through the list in a single day if you can, even if you cannot fix everything immediately. Having a complete picture of which checks pass and which fail is more valuable than fixing one category while being unaware of failures elsewhere.

Frequently Asked Questions

How often should I audit my niche site?

Run a full 20-point audit every 3 to 6 months, or immediately after a Google core update, a sharp traffic or revenue drop, adding more than 20 new pages, or a domain migration. Monthly, run a lighter check on just your ads.txt validity, Policy Center status, and Core Web Vitals scores.

What is the minimum word count for AdSense-safe niche site pages?

AdSense reviewers consistently flag pages under 300 words as low-value, especially when a large share of the site falls in that range. The practical threshold for a review-safe site is 600 to 900 words per primary article. More important than word count is whether the content fully answers the user’s query without requiring them to look elsewhere.

Will thin pages prevent AdSense approval?

Yes. AdSense reviewers evaluate the site as a whole. If 30% or more of indexed pages are thin (under 300 words, templated, or auto-generated), the entire site risks rejection even if your best articles are excellent. Before applying, expand thin pages or noindex them.

What is a normal AdSense RPM for a niche site?

Finance, insurance, and B2B content earns $8 to $40+ RPM for US/UK audiences. Lifestyle, gardening, DIY, and how-to content earns $2 to $8 RPM. Entertainment and gaming earns $1 to $3 RPM. US/UK/CA/AU traffic earns 3 to 10 times more than equivalent traffic from South Asia or Southeast Asia. A healthy niche site with a US-dominant audience and commercial-intent content should target $4 to $12 RPM.

Does site speed affect AdSense RPM?

Yes. Programmatic ad auctions have strict time limits. Slow-loading pages close the auction window before all demand partners can bid, reducing fill rate and CPM. Target LCP under 2.5 seconds. Every 500ms improvement on a high-traffic page produces a measurable RPM lift.