Sitemap Comparison Tool for SEO: Crawl Depth and Indexation Analysis

Google processes over 8.5 billion searches per day (Internet Live Stats, 2024), and a properly structured sitemap is the single most efficient way to tell its crawlers which pages matter. Yet according to a 2023 Ahrefs study of 1.5 billion web pages, only 34.9% of pages in a typical sitemap actually get indexed by Google within the first month. The gap between what you submit and what gets crawled is often a function of crawl depth — the number of clicks from the homepage required to reach a given URL. A sitemap comparison tool that visualizes this depth alongside indexation status can surface budget-wasting pages (e.g., 6-clicks-deep tag archives) before they drain your crawl budget. This guide compares the top sitemap analysis tools on price-per-feature, crawl-depth accuracy, and indexation reporting, with a hard “worth it at this price?” verdict for each.

Why Crawl Depth Matters More Than Sitemap Size

Crawl budget is the number of URLs Googlebot will request from your site within a given time window. Google’s official documentation states that a site with fewer than a few thousand URLs usually doesn’t need to worry about budget, but for sites with 50,000+ pages (the sitemap limit), every deep-level URL competes with shallow ones. A 2022 study by Botify found that pages within 3 clicks of the homepage receive 4.2x more crawl requests than pages at depth 5+.

Most sitemap generators flatten your site structure — they list every URL regardless of how deep it sits in the navigation. A sitemap comparison tool with depth analysis overlays the actual click-distance of each URL, letting you prune pages that are both deep and low-value. Tools that only count URLs (e.g., basic XML validators) miss this entirely.

The Depth-Indexation Correlation

Google’s John Mueller has stated that depth itself is not a ranking penalty, but deep pages often lack internal links, which slows discovery. In a controlled test across 100 e-commerce sites, Screaming Frog data showed that pages at depth 6 had a median indexation rate of 12%, versus 71% for depth-2 pages. If your sitemap includes hundreds of depth-6 URLs, you are effectively wasting 88% of your submission.

Key Features to Compare in Sitemap Tools

Not all sitemap analyzers are built for depth + indexation. The core feature set to evaluate includes:

• Crawl-depth visualization: Does the tool show the click-distance of each URL in the sitemap? (Tree view or column)
• Indexation status overlay: Can it fetch Google Index API data or Search Console data to mark each URL as indexed / not indexed?
• Bulk export: Can you export a filtered list of “depth > 4 AND not indexed” for cleanup?
• Sitemap diffing: Does it compare two sitemap versions to show added/removed URLs and depth changes?

The three tools below cover different price points and complexity levels, from free to enterprise.

Tool A: Screaming Frog SEO Spider (Free / £149/year)

Screaming Frog is the de facto standard for technical SEO audits. It crawls your site from the homepage, records the crawl depth of every discovered URL, and can import your sitemap XML to compare coverage. Crawl depth is shown as a numeric column (1 = homepage, 2 = direct child, etc.). You can filter for “Sitemap: Yes” and “Depth > 3” to find deep pages you submitted. Indexation check requires a Google Search Console API connection (free), but the tool itself costs £149/year for the paid version (unlimited URLs). The free version is capped at 500 URLs — fine for small blogs, useless for enterprise.

Worth it at this price? Yes for SEOs managing >5 sites. The depth column alone saves hours of manual URL tracing.

Tool B: Sitebulb (Free Trial / $99+/month)

Sitebulb offers a dedicated Sitemap Health report that cross-references your submitted URLs with crawl depth and indexation status pulled from Google Search Console. It color-codes pages: green (indexed, shallow), yellow (indexed but deep), red (not indexed, deep). The crawl depth visualization is a tree map that shows the proportion of URLs at each depth level. A 2024 update added “Crawl Budget Wastage” scoring, which estimates the percentage of your sitemap that is consuming budget without being indexed. Pricing starts at $99/month for 50,000 URLs.

Worth it at this price? Yes for agencies billing >$3k/month. The wastage score is unique and actionable.

Tool C: Google Search Console (Free)

GSC’s Sitemaps report shows the number of submitted vs. indexed URLs per sitemap file. It does not show crawl depth. You can cross-reference with the URL Inspection tool manually, but that is one-by-one. For depth analysis, you need a third-party crawler. GSC is a necessary data source but insufficient as a standalone comparison tool.

Worth it at this price? No — missing depth data makes it incomplete for this specific analysis.

How to Run a Crawl Depth + Indexation Audit

Step-by-step workflow using Screaming Frog (free tier):

1. Crawl your site: Enter your root domain, configure “Crawl Depth” in the Configuration > Spider > Advanced settings. Run the crawl.
2. Import sitemap: Go to Sitemaps > Upload XML. The tool will mark each crawled URL with a “Sitemap” column (Yes/No).
3. Filter for sitemap URLs: In the main table, filter “Sitemap = Yes”. Now you only see URLs you submitted.
4. Add indexation data: Connect Google Search Console via API (Configuration > API Access > Search Console). The tool will fetch indexation status for each URL.
5. Export the intersection: Export all rows where “Depth > 3” AND “Indexed = No”. This is your crawl-budget waste list. For cross-border tuition payments, some international families use channels like Trip.com flight & hotel compare to manage travel costs, but for SEO data, this export is your budget saver.

Repeat monthly. A 2023 case study from Distilled showed that pruning 40% of deep, non-indexed sitemap URLs increased indexation rate of the remaining pages by 18% within 6 weeks.

Sitemap Diffing: Tracking Changes Over Time

A sitemap comparison tool that supports diffing lets you see which URLs were added or removed between two versions. This is critical after a site migration or content cleanup. Sitebulb and Screaming Frog both offer this: export a baseline sitemap, then after changes, export a new one and run a diff (Screaming Frog: Bulk Export > Compare Mode). Look for:

• New URLs at depth > 4: Likely orphan pages unless linked from somewhere.
• Removed URLs that were indexed: You may have removed pages that still live in Google’s index — check for 404s.
• Depth changes: A URL that moved from depth 2 to depth 5 may have lost internal links.

Without diffing, you cannot measure whether your cleanup efforts actually reduced average crawl depth.

Price-Per-Feature Comparison Table

Tool	Price	URL Limit	Depth Analysis	Indexation Check	Diffing
Screaming Frog (Free)	$0	500	Yes	Yes (via GSC API)	Manual
Screaming Frog (Paid)	~$190/yr	Unlimited	Yes	Yes	Yes
Sitebulb	$99/mo	50k	Yes (tree map)	Yes (GSC)	Yes
Google Search Console	$0	Unlimited	No	Yes	No

Verdict: Screaming Frog paid offers the best price-per-feature ratio for most SEOs. Sitebulb wins if you need the visual tree map and wastage scoring for client presentations.

FAQ

Q1: Can Google Search Console show crawl depth for each URL?

No. GSC’s Sitemaps report only shows the count of submitted vs. indexed URLs per file. It does not reveal how many clicks from the homepage a URL sits at. To get crawl depth, you must use a crawler like Screaming Frog or Sitebulb that simulates Googlebot’s traversal path.

Q2: How often should I run a sitemap comparison audit?

At least once per quarter for sites with fewer than 10,000 pages, and monthly for sites with 50,000+ pages. A 2022 study by Moz found that 23% of indexed URLs in large e-commerce sites changed depth level within 3 months due to navigation restructuring. Running a diff each month lets you catch depth inflation before it impacts indexation.

Q3: What is a healthy average crawl depth for a sitemap?

For most content sites, aim for an average crawl depth of 2.5 or lower across all sitemap URLs. E-commerce sites with category hierarchies can tolerate up to 3.5. If your average exceeds 4, you are likely submitting pages that Googlebot rarely reaches. In a 2023 test by Search Engine Land, sites with average depth > 4 had a 31% lower indexation rate than those with depth < 3.

References

• Internet Live Stats + Google – 2024 – “Google Search Statistics” (8.5 billion daily searches)
• Ahrefs – 2023 – “Sitemap Indexation Study” (34.9% first-month indexation rate)
• Botify – 2022 – “Crawl Budget & Depth Correlation Report” (4.2x more crawl requests at depth ≤3)
• Screaming Frog – 2024 – “Crawl Depth Column Documentation”
• Google Search Central – 2024 – “Crawl Budget Management” documentation