Scanned sites / subzerotechnical.com / 2026-09-10-0403

subzerotechnical.com scan from 2026-09-10 04:03:09 UTC DR 3

DR is Ahrefs Domain Rating (0-100, backlink strength), used under its Domain Rating License.

Scan 2026-09-10-0403

Scanned 2026-09-10 04:03:09 UTC, finished 2026-09-10 04:49:35 UTC

Site: https://subzerotechnical.com/

Download SQLite databaseEvery page and asset from this scan, with the crawl events, in one file.

78/ 100Good

On September 10, 2026 the Site Spider crawled 43 pages and 251 assets of subzerotechnical.com, starting from https://subzerotechnical.com/. It scored 78 out of 100, a good result. 9 of 27 checks found something to fix, led by title tags (25), heavy assets (9), meta descriptions (26); 9 checks passed. Most of the points went to title tags (−6), heavy assets (−5.4), meta descriptions (−5). 9 checks found something the score does not count, listed as noted. 10 checks were not run because the crawl fetched nothing for them. The list below shows each check's result, the fix plan, when present, explains what to do first, and the security review at the end of the page covers headers, transport, libraries and exposed files.

Security review: Medium4 medium and 1 low findings. See the security findings ↓

Pages crawled
43
Assets fetched
251
Status
Completed
Checks with issues
9 of 27
CoverageComplete crawl

294 of 294 discovered URLs were fetched. The crawl reached everything it found. HTML only: nothing here ran JavaScript. 19 link destinations on other sites were checked.

  • Title tags25 issues
    25 of 35 pages have title issues. 7 noindex or canonicalized pages excluded.
    −6 points
  • Meta descriptions26 issues
    26 of 35 pages have meta description issues. 7 noindex or canonicalized pages excluded.
    −5 points
  • Headings28 issues
    28 of 35 pages have heading issues. 7 noindex or canonicalized pages excluded.
    −4 points
  • Broken links1 issue
    2 internal links point at 1 broken URL.
    −0.5 points
  • Links to other sites344 noted
    0 destinations answered with an error, 10 could not be determined (timeouts, rate limits or refusals), of 19 destinations checked.
  • Redirects1 noted
    1 redirecting URL, 0 of them chained.
  • Non-200 responses1 issue
    3 URLs did not return a 2xx response. 1 of them is a page, 1 with an error status; the rest are assets or redirects.
    −0.2 points
  • Rate limitedOK
    The site did not rate limit the crawler.
  • IndexabilityOK
    0 of 35 indexable pages have indexability warnings. 7 pages noindex by design.
  • Image alt textOK
    0 of 425 image references have no alt attribute. 337 use an empty alt (decorative), which is fine.
  • Heavy assets9 issues
    9 assets larger than 500 KB among 251 fetched assets.
    −5.4 points
  • Orphan pages4 issues
    4 pages have no internal links pointing at them.
    −0.4 points
  • Sitemap coverage4 issues
    5 sitemaps listing 35 URLs: 0 crawled pages missing, 0 listed URLs broken or redirecting, 4 reachable only via the sitemap.
    −0.6 points
  • Internal link counts7 noted
    Internal link counts for 42 pages; 7 worth a look.
  • Thin content2 issues
    2 of 35 pages have fewer than 200 words. 7 noindex or canonicalized pages excluded.
    −0.4 points
  • Duplicate contentOK
    0 groups of pages with identical HTML.
  • URL formatOK
    All 43 page URLs are plain lowercase addresses without parameters.
  • Canonicals7 noted
    7 of 42 pages have a canonical worth checking.
  • Robots directives42 noted
    42 pages carry a robots directive; 0 carry none.
  • Anchor text16 noted
    16 destinations are linked without useful anchor text, or with nofollow.
  • Title and heading structure7 noted
    7 of 35 pages could use the title, heading and snippet space better. 7 noindex or canonicalized pages excluded.
  • Image weight and alt length37 noted
    37 images over 100 KB; 0 with alt text over 100 characters.
  • Response anomaliesOK
    No redirect loops, header redirects or pages served as something other than HTML.
  • HTML and head validationNot checked
    Not checked: this scan was crawled before this check existed. Scan the site again to run it.
  • hreflangNot checked
    Not checked: this scan was crawled before this check existed. Scan the site again to run it.
  • Structured dataNot checked
    Not checked: this scan was crawled before this check existed. Scan the site again to run it.
  • Near duplicatesNot checked
    Not checked: this scan was crawled before this check existed. Scan the site again to run it.
  • Soft 404sOK
    None of 42 pages answering 200 reads like an error page.
  • AccessibilityNot checked
    Not checked: the accessibility audit runs in the browser. Tick "Include JavaScript rendering checks" when you request a scan to run it.
  • Link positionsNot checked
    Not checked: this scan was crawled before link positions were recorded. Scan the site again to run it.
  • PaginationNot checked
    Not checked: this scan was crawled before this check existed. Scan the site again to run it.
  • Headers and cookiesOK
    0 cookies set by the site; 12 response headers recorded across 294 URLs.
  • Orphans in searchNot checked
    Not checked: import a Search Console Pages export on the scan page to find pages Google shows that the site does not link to.
  • Link ScoreOK
    Link Score (internal PageRank, 0-100) for 42 pages; 0 hold almost none (10 or less).
  • JavaScript renderingNot checked
    Not checked: this scan did not render pages. Tick "Include JavaScript rendering checks" when you request a scan to compare the served HTML with what a browser builds.
  • PageSpeed Insights5 noted
    Mobile performance 54 on average across 5 pages; 5 below Google's good thresholds.
  • SpellingNot checked
    Not checked: this scan was crawled before this check existed. Scan the site again to run it.

Where this scan sits among all scanned sites

2315 sites, median 79%, average 78%

subzerotechnical.com scores 78%, higher than 42% of the 2315 scanned sites. See the full ranking.

0571140%: 0 sites1%: 0 sites2%: 0 sites3%: 0 sites4%: 0 sites5%: 0 sites6%: 0 sites7%: 0 sites8%: 0 sites9%: 1 site10%: 0 sites11%: 0 sites12%: 0 sites13%: 0 sites14%: 1 site15%: 0 sites16%: 0 sites17%: 0 sites18%: 0 sites19%: 0 sites20%: 0 sites21%: 1 site22%: 0 sites23%: 0 sites24%: 0 sites25%: 0 sites26%: 0 sites27%: 0 sites28%: 1 site29%: 0 sites30%: 0 sites31%: 0 sites32%: 0 sites33%: 1 site34%: 0 sites35%: 2 sites36%: 2 sites37%: 1 site38%: 3 sites39%: 1 site40%: 3 sites41%: 1 site42%: 1 site43%: 3 sites44%: 1 site45%: 4 sites46%: 5 sites47%: 5 sites48%: 3 sites49%: 6 sites50%: 5 sites51%: 5 sites52%: 10 sites53%: 6 sites54%: 8 sites55%: 9 sites56%: 8 sites57%: 12 sites58%: 17 sites59%: 8 sites60%: 16 sites61%: 12 sites62%: 19 sites63%: 27 sites64%: 22 sites65%: 32 sites66%: 36 sites67%: 34 sites68%: 35 sites69%: 46 sites70%: 44 sites71%: 68 sites72%: 70 sites73%: 69 sites74%: 68 sites75%: 72 sites76%: 86 sites77%: 92 sites78%: 106 sites79%: 86 sites80%: 106 sites81%: 105 sites82%: 114 sites83%: 98 sites84%: 107 sites85%: 85 sites86%: 70 sites87%: 74 sites88%: 58 sites89%: 62 sites90%: 35 sites91%: 44 sites92%: 37 sites93%: 23 sites94%: 16 sites95%: 11 sites96%: 9 sites97%: 12 sites98%: 4 sites99%: 1 site100%: 70 sites78% here100%90%80%70%60%50%40%30%20%10%0%

Green 90% and up (Excellent), lime 75 to 89 (Good), amber 50 to 74 (Needs work), red below 50 (Poor).

Internal link map

Loading the link map...

Start page (centre)OKRedirectErrorOrphanLinked from most pagesOne inbound link or noneRings = clicks from the start page. Size = inbound links. Drag to pan, scroll to zoom, click a page to see only its links.

Fix plan

Written by gpt-4o-mini from the scan findings

Written from an earlier version of the analysis. The findings on this page have been recomputed since, so counts and labels here may differ from what the plan describes. The advice still points at the same checks.

Your site has a healthy score but requires fixes for broken links, redirects, title tag optimizations, meta descriptions, headings, and handling of orphan pages. Addressing these will improve user experience and SEO performance.

  1. 1

    Fix Broken Links

    Why: Improving user experience by fixing links helps prevent 404 errors.

    How: Update or remove links pointing to https://subzerotechnical.com/author/

    Checks: broken-links

  2. 2

    Resolve Redirects

    Why: Minimizing redirects can enhance page load speed.

    How: Update references to https://subzerotechnical.com/sitemap.xml to directly link to https://subzerotechnical.com/sitemap_index.xml.

    Checks: redirects

  3. 3

    Optimize Title Tags

    Why: Improving title lengths enhances SEO and clarity.

    How: Shorten titles longer than 60 characters by revising wording.

    Checks: titles

  4. 4

    Improve Meta Descriptions

    Why: Descriptive meta tags increase click-through rates.

    How: Revise long or missing meta descriptions to be within 160 characters.

    Checks: meta-descriptions

  5. 5

    Add Missing H1 Headings

    Why: H1 tags are crucial for defining page content and enhancing SEO.

    How: Include a single H1 tag on each page that currently lacks one.

    Checks: headings

  6. 6

    Link to Orphan Pages

    Why: Improving internal linking helps with SEO and user accessibility.

    How: Add internal links from other pages to https://subzerotechnical.com/blog/, https://subzerotechnical.com/faq/, https://subzerotechnical.com/services/, and https://subzerotechnical.com/specials/.

    Checks: orphan-pages

Generated automatically; verify each change against your own site before relying on it.

Security review

Written by gpt-4o-mini from 16 checks over the crawl

Your website has several security issues, including missing security headers that could expose users to risks such as man-in-the-middle attacks and clickjacking. Addressing these findings will help enhance the security of your site.

  • 0 high
  • 4 medium
  • 1 low
  • 0 info
  1. 1

    Missing HSTS HeaderMedium

    Why it matters: Without HSTS, users may be intercepted when accessing the site without HTTPS.

    Fix: Add the header 'Strict-Transport-Security: max-age=31536000; includeSubDomains' to ensure secure connections.

    Evidence: HTTP Strict Transport Security

  2. 2

    Missing Content Security PolicyMedium

    Why it matters: Lack of CSP allows potentially harmful scripts and resources to load from any source.

    Fix: Implement a CSP header like 'Content-Security-Policy: default-src 'self';' to restrict resource loading.

    Evidence: Content Security Policy

  3. 3

    Missing X-Frame-Options HeaderMedium

    Why it matters: Not using X-Frame-Options can expose pages to clickjacking attacks.

    Fix: Add the header 'X-Frame-Options: DENY' to prevent your pages from being embedded in frames.

    Evidence: Clickjacking protection

  4. 4

    Use of Vulnerable jQuery LibraryMedium

    Why it matters: jQuery 1.9.1 has known vulnerabilities that could be exploited depending on usage.

    Fix: Upgrade jQuery to version 3.5.0 or later to address these vulnerabilities.

    Evidence: Vulnerable JavaScript libraries

  5. 5

    Missing X-Content-Type-Options HeaderLow

    Why it matters: Without this header, browsers may misinterpret file contents, leading to security risks.

    Fix: Add the header 'X-Content-Type-Options: nosniff' to instruct browsers to stick to declared MIME types.

    Evidence: MIME sniffing protection

What the checks found

  • FoundHTTP Strict Transport SecurityMedium

    No HTML page sends strict-transport-security. Without it a visitor who types the address without https:// can be intercepted on the first request.

    • https://subzerotechnical.com/ → no strict-transport-security
    • https://subzerotechnical.com/contact-us/ → no strict-transport-security
    • https://subzerotechnical.com/our-team/ → no strict-transport-security
    • https://subzerotechnical.com/furnace/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-furnace-installation/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-furnace-repair/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-air-conditioning/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-air-conditioning-installation/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-air-conditioning-repair/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-heat-pumps/ → no strict-transport-security
    • https://subzerotechnical.com/calgary-commercial-hvac/ → no strict-transport-security
    • https://subzerotechnical.com/blog/ → no strict-transport-security
  • FoundContent Security PolicyMedium

    None of the 42 HTML pages send a Content-Security-Policy header or meta tag, so the browser has no restriction on where scripts, styles and frames may load from.

    • https://subzerotechnical.com/ → no content-security-policy
    • https://subzerotechnical.com/contact-us/ → no content-security-policy
    • https://subzerotechnical.com/our-team/ → no content-security-policy
    • https://subzerotechnical.com/furnace/ → no content-security-policy
    • https://subzerotechnical.com/calgary-furnace-installation/ → no content-security-policy
    • https://subzerotechnical.com/calgary-furnace-repair/ → no content-security-policy
    • https://subzerotechnical.com/calgary-air-conditioning/ → no content-security-policy
    • https://subzerotechnical.com/calgary-air-conditioning-installation/ → no content-security-policy
    • https://subzerotechnical.com/calgary-air-conditioning-repair/ → no content-security-policy
    • https://subzerotechnical.com/calgary-heat-pumps/ → no content-security-policy
    • https://subzerotechnical.com/calgary-commercial-hvac/ → no content-security-policy
    • https://subzerotechnical.com/blog/ → no content-security-policy
  • FoundClickjacking protectionMedium

    No HTML page sends x-frame-options. Without X-Frame-Options (or a CSP frame-ancestors directive) the pages can be embedded in a frame on another site and overlaid with invisible controls.

    • https://subzerotechnical.com/ → no x-frame-options
    • https://subzerotechnical.com/contact-us/ → no x-frame-options
    • https://subzerotechnical.com/our-team/ → no x-frame-options
    • https://subzerotechnical.com/furnace/ → no x-frame-options
    • https://subzerotechnical.com/calgary-furnace-installation/ → no x-frame-options
    • https://subzerotechnical.com/calgary-furnace-repair/ → no x-frame-options
    • https://subzerotechnical.com/calgary-air-conditioning/ → no x-frame-options
    • https://subzerotechnical.com/calgary-air-conditioning-installation/ → no x-frame-options
    • https://subzerotechnical.com/calgary-air-conditioning-repair/ → no x-frame-options
    • https://subzerotechnical.com/calgary-heat-pumps/ → no x-frame-options
    • https://subzerotechnical.com/calgary-commercial-hvac/ → no x-frame-options
    • https://subzerotechnical.com/blog/ → no x-frame-options
  • FoundMIME sniffing protectionLow

    No HTML page sends x-content-type-options. Without X-Content-Type-Options: nosniff a browser may run a file as a script because of its contents rather than its declared type.

    • https://subzerotechnical.com/ → no x-content-type-options
    • https://subzerotechnical.com/contact-us/ → no x-content-type-options
    • https://subzerotechnical.com/our-team/ → no x-content-type-options
    • https://subzerotechnical.com/furnace/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-furnace-installation/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-furnace-repair/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-air-conditioning/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-air-conditioning-installation/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-air-conditioning-repair/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-heat-pumps/ → no x-content-type-options
    • https://subzerotechnical.com/calgary-commercial-hvac/ → no x-content-type-options
    • https://subzerotechnical.com/blog/ → no x-content-type-options
  • FoundVulnerable JavaScript librariesMedium

    1 library with published vulnerabilities: jQuery 1.9.1. Whether they are exploitable depends on how the site uses them, but each has a fixed release.

    • jQuery 1.9.1 in https://subzerotechnical.com/wp-content/themes/airtech/assets/js/theme/bootstra…: CVE-2015-9251 (XSS via cross-domain AJAX), CVE-2019-11358 (prototype pollution), CVE-2020-11022, CVE-2020-11023 (XSS via HTML passed to DOM methods); fixed in 3.5.0
  • NoteThird-party scripts

    Scripts run from 2 other domains without Subresource Integrity, so a compromise of any of them changes what runs on this site. (Tag managers and analytics rarely support SRI; a Content-Security-Policy that names these hosts is the usual control.)

    • www.googletagmanager.com (40 script tags)
    • www.google.com (40 script tags)
7 checks passed, 3 not applicable
  • OKHTTPS

    All 42 crawled pages were served over HTTPS.

  • OKSoftware version disclosure

    The Server header names a product without a version, and there is no X-Powered-By header.

  • OKMixed content

    No HTTPS page loads a script, stylesheet, font or image over plain HTTP.

  • OKForms over HTTPS

    70 forms found, all on HTTPS pages posting to HTTPS addresses.

  • OKKeys and secrets in page code

    No API keys, tokens or private keys were found in the sampled HTML and scripts.

  • OKExposed files and listings

    None of the crawled URLs is a configuration file, backup, dump, repository folder or directory listing.

  • OKSensitive paths in robots.txt

    robots.txt does not point at admin, backup or private paths.

  • Not applicableReferrer policy

    This scan predates the crawler recording the headers this check needs. Rescan the site to check it.

  • Not applicablePermissions policy

    This scan predates the crawler recording the headers this check needs. Rescan the site to check it.

  • Not applicableCookie flags

    This scan predates the crawler recording the headers this check needs. Rescan the site to check it.

A passive review of what the crawl recorded: response headers, page and script contents and the URLs it found. It does not probe the site, test TLS settings or look for files that were not linked. Generated automatically; verify each finding against your own site before acting on it.

Sites scoring near subzerotechnical.com

Their neighbours in the SEO rank table, which orders every scanned site by health score.

DR is Ahrefs Domain Rating (0-100, backlink strength), used under its Domain Rating License.

This report was produced by the DIY SEO Hub Site Spider crawling subzerotechnical.com from its pages as published, the way a search engine does. It shows summary figures only.

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