SEO Comparison Tool
Enter two URLs to run a full SEO audit on both pages and compare the results side by side. The tool checks 40+ factors across 8 categories and shows each site’s scores, meta tags, content metrics, technical setup, and security headers in a single view — so you can see exactly where each site wins, where it falls short, and what to fix.
How to Use the SEO Comparison Tool
- Enter two URLs: Type or paste a full URL into each input field, including https://. The tool works on any two publicly accessible pages — your own pages, competitor pages, or a mix.
- Click Compare Pages: The tool fetches both pages server-side and runs all checks simultaneously. Most comparisons return results within a few seconds.
- Read the SEO Verdict: The verdict section at the top shows which site wins the most categories, the overall point lead, and a tie count. This is the fastest way to see which page is in better shape overall.
- Check the score header: Each site’s overall score (0–100) is shown with an animated donut chart. The winner’s card is highlighted. Pass, warning, and fail counts appear below the score.
- Review the Page Overview: The overview table compares 14 key metrics side by side — response time, page size, word count, links, images, structured data, title length, meta description length, HTTPS, and sitemap. The better value in each row is highlighted in blue or purple.
- Inspect Meta Tags & Content Preview: This section shows the actual title tag, meta description, H1, canonical URL, Open Graph tags, Twitter card, and indexing status for both pages. Each field shows a color-coded badge (green for good, yellow for warning, red for missing or out of range) and a length bar for title and description fields.
- Expand Content & On-Page Analysis: Detailed metrics for content quality, heading structure, link counts, image optimization, scripts, and structured data: all compared in one table with win highlighting.
- Expand Category Scores: See the score for each of the 8 SEO categories for both sites, displayed as animated bars side by side. Quickly identify which categories each site leads in.
- Expand Detailed Checks: Click any category accordion to see the individual check results for both sites. Each check shows a pass, warning, or fail status and a short note for both sites in a three-column layout.
- Review Technical & Security: Checks HTTPS, GZIP, robots.txt, sitemap, preconnect, response time, page size, server, cache-control, and all four security headers (HSTS, X-Frame-Options, X-Content-Type-Options, CSP).
- Check Priority Fixes: The top failed checks for each site are listed side by side, sorted by point weight. This shows the highest-impact issues to address on each page.
- Compare Top Keywords and Anchor Texts: Side-by-side tables show the 10 most frequent meaningful words and the 10 most common link anchor texts for each page.
What the SEO Comparison Tool Analyzes
The tool runs the same 40+ checks on both URLs and presents every result in parallel. Each check belongs to one of 8 categories. Category scores and an overall score (0–100) are calculated for both pages.
🏷️ Meta Tags
Title tag (presence, length, quality), meta description (presence, length), robots meta tag, canonical tag, and character set declaration — shown with color-coded length indicators for both pages.
📝 Content & Headings
Word count, content-to-HTML ratio, average sentence length, H1–H3 tag counts, heading hierarchy skips, and readability metrics — compared side by side so you can see which page has stronger content signals.
🖼️ Images
Total image count, missing alt text count, images without declared dimensions, lazy-loaded image percentage, and next-generation format usage (WebP, AVIF) — displayed as percentages for easy comparison.
🔗 Links
Internal links, external links, nofollow link ratio, and total link count — with win highlighting to identify which page has stronger internal linking.
⚙️ Technical SEO
HTTPS, viewport meta tag, structured data (Schema.org types), favicon, GZIP/Brotli compression, server response time, HTML page weight, and URL length.
🕷️ Crawlability
robots.txt availability, XML sitemap discovery, HTML lang attribute, noindex header detection, and canonical self-reference check.
🔒 Security Headers
HSTS, X-Frame-Options, X-Content-Type-Options, and Content-Security-Policy — all shown as pass or fail for both sites, with HSTS header value included when set.
📣 Social & Metadata
Open Graph completeness (og:title, og:description, og:image), Twitter Card tag, hreflang tags, Apple Touch Icon, and RSS feed link.
Use Cases
Comparing your page against a competitor
Enter your page and a competitor’s page to see how they score across the same 40+ checks. The category wins tally shows at a glance which site is stronger in each area. The keyword and anchor text tables reveal which terms the competitor emphasizes that you may be missing.
Choosing between two versions of a page
If you have a staging URL and a live URL, run both through the tool to confirm that the new version retains all the SEO signals of the original — canonical tags, structured data, meta descriptions, security headers, and more.
Auditing before and after a site migration
After migrating a site, compare the old URL and the new URL to verify that HTTPS is active, canonical tags are correct, robots.txt is accessible, the sitemap is found, and all meta tags carried over correctly.
Identifying what a higher-ranking competitor does better
Compare your page with the page ranking above yours for your target keyword. The detailed checks section shows exactly which factors the competitor passes that you fail — giving you a concrete action list.
Reviewing client pages against industry benchmarks
When onboarding a new client, compare their key pages against well-optimized pages in the same industry to quickly surface gaps in technical setup, content depth, and meta tag quality.
Validating a redesign before launch
Compare the redesigned staging page against the current live page to confirm that no SEO signals were accidentally removed — headings, structured data, internal links, and meta tags all accounted for.
How the Scoring Works
Each check earns points based on its importance to SEO. Points earned are summed within each of the 8 categories to produce a category score (0–100). The overall score is the average of all 8 category scores.
Score ranges:
- 80–100: Good. Most important signals are in place.
- 50–79: Needs attention. Several issues are present that could impact rankings.
- 0–49: Poor. Significant issues need to be addressed.
The comparison tool calculates these scores independently for each URL. The site with the higher overall score wins, and the verdict section shows which site wins more individual categories — which is often more informative than the point difference alone.
Reading the Meta Tags Color Codes
The Meta Tags & Content Preview section uses color-coded badges to show whether each field meets recommended SEO guidelines:
Title Tag
- Green: 50–60 characters (optimal range)
- Yellow: 30–49 or 61–70 characters (acceptable but not ideal)
- Red: Under 30, over 70, or missing
Meta Description
- Green: 120–155 characters (optimal range)
- Yellow: 70–119 or 156–180 characters (acceptable but not ideal)
- Red: Under 70, over 180, or missing
OG Title
- Green: 40–70 characters
- Yellow: 20–39 or 71–100 characters
- Red: Missing or outside range
Other fields (H1, canonical, language, viewport, charset, Twitter Card)
- Green: Field is present and set
- Red: Field is missing or empty
A mini progress bar appears under title and description values to show how close the length is to the optimal range.
Helpful Tips
Use full URLs including https://.
The tool needs the complete URL to fetch each page. Entering a domain without https:// may cause an error or return inaccurate results.
The tool analyzes raw server-side HTML, not rendered content.
Results are based on the HTML returned by the server before JavaScript runs. Content or tags injected by JavaScript after page load will not be detected — the same limitation applies to most search engine crawlers on their first visit.
Focus on category wins, not just the overall score.
A site can have a higher overall score while losing in the categories that matter most for your target keyword. Check which categories each site wins, not just the total.
Priority Fixes shows the highest-impact changes.
The priority fixes section ranks failures by the number of points at stake. Fixing a high-point failure (such as a missing meta description) has more impact than fixing a low-point warning.
Length bars in Meta Tags are visual guides, not absolute rules.
The green ranges reflect widely cited best practices. A title at 62 characters is not necessarily worse than one at 59 characters. Use the color as a signal, not a strict requirement.
Security headers do not directly affect rankings.
HSTS, CSP, X-Frame-Options, and X-Content-Type-Options are security best practices. They appear in the comparison because they signal site quality and protect users — not because Google weights them as ranking factors.
Response time is measured from the server’s location.
The response times shown reflect how long the tool’s server took to receive each page’s HTML. They are useful for relative comparison between the two URLs but are not a substitute for Lighthouse or Core Web Vitals data.
Frequently Asked Questions
What does the SEO Comparison Tool check?
The tool runs 40+ checks across 8 categories on both URLs: Meta Tags, Content & Headings, Images, Links, Technical SEO, Crawlability, Security Headers, and Social & Metadata. Every check result, score, and metric is shown for both sites simultaneously.
Can I compare any two URLs?
Yes, as long as both pages are publicly accessible without authentication. The tool cannot access pages behind a login, paywall, or IP restriction.
Does the tool store the pages it fetches?
No. Both URLs are fetched server-side to perform the analysis, but no page data is stored. Results are returned directly to your browser.
What does the SEO Verdict show?
The verdict section calculates how many of the 8 categories each site wins (higher category score), how many are tied, and which site has the higher overall score. It also shows the point difference between the two overall scores.
What is the overall score?
The overall score (0–100) is the average of all 8 category scores. Each category score is calculated from the points earned across its individual checks. A score above 80 is generally healthy; below 50 indicates significant issues.
Why do the two sites have the same overall score but different category wins?
The overall score is an average of 8 category scores. Two sites can reach the same average through very different distributions — one site might score high in technical SEO but low in content, while the other does the opposite. The category wins count shows this difference clearly.
Why does a page show a missing H1 when I can see one on the page?
If the H1 is added to the page by JavaScript after the initial HTML loads, the tool will not detect it. The tool analyzes the raw HTML returned by the server, the same way Googlebot sees the page on its first crawl before rendering.
What does a red badge on the title tag mean?
Red means the title tag is either missing, shorter than 30 characters, or longer than 70 characters. All three cases fall outside the recommended range and may result in Google rewriting the title in search results.
Why is the meta description showing yellow when it looks fine?
Yellow means the description is outside the 120–155 character optimal range but still within an acceptable range (70–119 or 156–180 characters). It is not a critical issue but is worth adjusting if the description is close to one of the boundaries.
Can I compare pages from the same domain?
Yes. You can compare any two publicly accessible URLs, including two pages from the same site — for example, comparing a high-performing page with an underperforming one to identify differences.
Why does the tool show different results from Google Search Console?
This tool is an on-page SEO analyzer. It checks the technical and on-page factors visible in each page’s HTML response. It does not have access to Google’s index, crawl history, click data, or ranking signals.
What are security headers and do they affect rankings?
Security headers (HSTS, X-Frame-Options, X-Content-Type-Options, CSP) are HTTP response headers that protect users from certain attacks. They are not direct Google ranking factors, but they signal a well-maintained site. The comparison shows them because they appear in technical SEO audits.