Semhack
Start free

Site audit

40 checks on every page. A crawl for everything in between.

Audit one page in seconds, or crawl a whole site. Every finding says what’s wrong, why it matters and how to fix it, and the next audit shows what changed.
Start freeSee pricing
fernhillcoffee.com/shop/cold-brewExample
79
SEO15 checks
Security8 checks
Performance8 checks
Markup9 checks
  • FixMeta description The page has no meta description.
  • FixCanonical URL The page declares 2 different canonical URLs.
  • CheckRender-blocking JavaScript 3 scripts block page rendering.
  • CheckHSTS The site doesn’t send an HSTS header.

Page audit

One page, four categories, a score you can explain.

Paste a URL and Semhack fetches the page, its robots.txt, its sitemap and a made-up URL on the same site (to see how missing pages are handled), then runs every check. Each result is pass, warning, fail or info, with the value it found.
  • A 0–100 score, weighted by importance: high counts three times as much as low
  • Scores per category, so you know where the points went
  • Copy the affected URLs, or print the report as a PDF

SEO15 checks

  • Title tagHigh
  • Meta descriptionHigh
  • HeadingsMedium
  • Content keywordsMedium
  • Image alt textMedium
  • SEO-friendly URLMedium
  • 404 pageMedium
  • robots.txtHigh
  • In-page linksMedium
  • FaviconLow
  • LanguageMedium
  • NoindexHigh
  • Meta refreshLow
  • Meta keywordsLow
  • Canonical URLMedium

Security8 checks

  • HTTPSHigh
  • HTTP/2Low
  • Mixed contentHigh
  • Server signatureLow
  • Unsafe cross-origin linksMedium
  • Insecure formsHigh
  • HSTSMedium
  • Plaintext emailsLow

Performance8 checks

  • Text compressionHigh
  • Load timeHigh
  • Page sizeMedium
  • HTTP requestsMedium
  • Image formatMedium
  • Render-blocking JavaScriptMedium
  • DOM sizeMedium
  • DoctypeLow

Markup and content9 checks

  • Structured dataMedium
  • Meta viewportHigh
  • CharsetMedium
  • SitemapMedium
  • Social tagsLow
  • Content lengthMedium
  • Text to HTML ratioLow
  • Inline CSSLow
  • Deprecated HTMLLow

Site audit

Crawl the site the way a search engine would.

A site audit follows internal links breadth-first and reads the sitemap, then looks across all the pages for problems no single page shows: broken links, duplicates, orphans, redirect chains and pages that look like errors.
  • Starts at the homepage and the sitemaps listed in robots.txt
  • Runs the page checks on every crawled page, too
  • Filter the pages, open any one for its checks, export issues and pages as CSV
fernhillcoffee.comExample
Pages crawled
412
In sitemap
398
Site score
84
  • ErrorBroken internal links6 pages+4
  • WarningPossible soft 404s3 pages
  • WarningDuplicate titles14 pages
  • WarningOrphan pages9 pages−2
  • WarningRedirect chains4 pages
  • NoticeDeep pages22 pages

Change since the previous crawl.

Everything the crawl looks for

Errors

  • Broken internal links
  • Missing title
  • Mixed content

Warnings

  • Sitemap URLs that aren’t 200
  • Possible soft 404s
  • Redirect chains
  • Duplicate titles
  • Duplicate meta descriptions
  • Missing meta description
  • Missing H1
  • Noindex pages in the sitemap
  • Linked pages blocked by robots.txt
  • Canonical points elsewhere
  • Orphan pages
  • Slow pages
  • Thin content
  • Images without alt text

Notices

  • Links to redirects
  • Links to the other host spelling
  • Multiple H1s
  • Noindex pages
  • Deep pages

Thresholds: slow means the HTML took over 3 seconds, thin means under 300 words, deep means more than 4 clicks from the homepage.

Changes

The second audit is where it gets useful.

  • What changed on the page

    Audit a page again and the report marks each check that changed since the last audit, such as a canonical that now points elsewhere or a description that disappeared.

  • What changed across the site

    A new crawl of the same site is compared issue by issue and URL by URL with the previous one, biggest changes first.

  • Into the weekly list

    With Search Console connected, failing checks on pages that get search traffic join This week, ranked by those pages’ clicks.

Core Web Vitals

Real-user speed data next to the audit.

  • From PageSpeed Insights

    Run a test from any page audit report. Google loads the page on a phone and on a desktop, which takes about a minute, and the result is kept for the day.

  • Field data, when Google has it

    LCP, INP and CLS from the Chrome UX Report: the 75th percentile of real Chrome users over 28 days, for the page or else its whole site. Pages without enough Chrome traffic have none, and the report says so.

  • Lab data, always

    The Lighthouse performance score, its metrics (including Total Blocking Time and Speed Index) and the opportunities Lighthouse lists to make the page faster.

How it crawls

Polite by default.

  • Identifies itself

    Requests come from SemhackBot, with a link to a page that explains what it does and how to block it.

  • Follows robots.txt

    Site audits skip URLs that robots.txt blocks (and list them, so you can see what was left out), and honor a crawl-delay of up to 10 seconds.

  • Gentle on servers

    A few requests at a time, one when a crawl-delay is set. Crawls run in the background and pick up where they left off if interrupted.

Honest limits

What it doesn’t do

  • It reads the HTML your server sends. Content that only appears after JavaScript runs isn’t crawled or checked.
  • The audit’s load time is the time to receive the HTML. Browser measurements such as Largest Contentful Paint come from the separate PageSpeed Insights test, which depends on Google’s quota and can be slow to come back when it’s busy.
  • How many pages a crawl covers depends on your plan. See pricing.
  • It finds and explains problems; it never changes anything on your site.

Read more

The rest of Semhack

Audit your first page in seconds.

The free plan includes page audits and site crawls for one website.

Start freeSee pricing