Caliency.

Free SEO checker: see what your site is missing.

Enter your address and we'll check 25 points. For every problem, we explain how to fix it in plain language.

Ready to check25 checks · 7 groups
25checkpoints
  • Passed
  • Needs work
  • Problem
  • Info / no data

How to run an SEO check in 3 steps

An SEO check looks at the settings and content that decide whether Google can find your page and understand it. It's also called a website grader or site audit. This tool checks one page against 25 points.

  1. Enter the address

    Enter your homepage or any page you want to check. You don't need to type "https://".

  2. Read the problems first

    The "fix these first" list puts the most damaging items at the top. Each one tells you whether you can fix it yourself or need a developer.

  3. Fix it and test again

    After a change, run the check again from the same link. You can share the report link with your team or your developer.

How to read the results

Every result is laid out the same way. Below is an example row from the meta description check.

!

Search snippet text (meta description)

You can do thisNeeds work

168 characters. Likely cut in results.

We build company websites, online stores and mobile apps that are fast, secure and easy to find in search. Get a free quote today and let's start your project together.

Why it matters, how to fix it ›

Example row

  1. Status

    Problem, needs work, passed or info, shown by colour and by symbol.

  2. Who fixes it

    Can you fix this yourself, or do you need a developer?

  3. What we found

    What we measured, such as how many characters the description has.

  4. What's on your page

    Text such as the title and description is shown exactly as it appears on your page.

  5. Why and how

    Click it to see why it matters and how to fix it.

Problem
Can directly stop the page appearing in search or being understood correctly. Fix these first.
Needs work
It works, but could be better. It holds back clicks, speed or clarity.
Passed
Meets what Google's documentation expects.
Info
Not an error, just for information. It isn't scored.

What does the SEO check cover?

The checks fall into seven groups. For each one, we explain why it matters and how to fix it.

7 checks

Access & indexing

Can Google reach the page and index it?

  • Page response (HTTP status)

    Needs a developer

    Why it matters

    Google indexes pages normally only when they return a 200 response.

    Fix

    Make sure the server returns 200 for this address. Error pages should return a real error code.

    SEO-friendly website guide →

  • Secure connection (HTTPS)

    Needs a developer

    Why it matters

    HTTPS is one of Google's page experience criteria, and browsers mark HTTP sites as "not secure".

    Fix

    Install a free certificate (e.g. Let's Encrypt) and permanently (301) redirect every HTTP address to HTTPS.

    Website security guide →

  • Redirects (www and chain)

    Needs a developer

    Why it matters

    Your site should live at one address: the www and non-www spellings should point to each other. Every extra redirect also slows the page down.

    Fix

    Make both the www and non-www address work and 301-redirect one to the other. Point old addresses at the final address in one hop.

  • Visible on Google (noindex)

    You can do this

    Why it matters

    A noindex directive tells Google not to show the page in results at all.

    Fix

    If the page should appear in search, remove noindex from the robots meta tag or the X-Robots-Tag header.

  • Crawl rules (robots.txt)

    Needs a developer

    Why it matters

    robots.txt tells bots which parts of the site they may visit. If there is none, Google assumes everything may be crawled.

    Fix

    Remove or narrow the Disallow rule that blocks this page.

    AI crawlers guide →

  • Sitemap

    You can do this

    Why it matters

    A sitemap tells Google which pages exist. Google says sites under about 500 well-linked pages may not need one.

    Fix

    Create a sitemap.xml, declare it in robots.txt with a Sitemap: line and submit it in Search Console.

    SEO-friendly website guide →

  • Main address (canonical)

    Needs a developer

    Why it matters

    The canonical tag says which address is the main one when the same content lives at several.

    Fix

    Give every page a single rel="canonical" pointing at its own address.

    SEO-friendly website guide →

3 checks

Title & description

What do people see in the search result?

  • Page title (title tag)

    You can do this

    Why it matters

    The title is the main source of the blue headline in results. Google sets no length limit, but long titles are truncated.

    Fix

    Write one title that names the topic and your brand, at roughly 60 characters or fewer.

    On-page SEO guide →

  • Search snippet text (meta description)

    You can do this

    Why it matters

    Google often takes the snippet from here. There's no limit, but long text gets cut.

    Fix

    Write a 70–160 character description that says in one sentence what the page offers.

    On-page SEO guide →

  • Share card (Open Graph)

    You can do this

    Why it matters

    It doesn't affect ranking, but it sets the title and image shown when the link is shared on WhatsApp, LinkedIn or X.

    Fix

    Add og:title, og:description and a 1200×630 pixel og:image.

5 checks

Page structure

Is the content in the HTML, and does it work on mobile?

  • Main heading (H1)

    You can do this

    Why it matters

    The H1 tells readers and screen readers what the page is about. Google says heading count and order don't affect ranking.

    Fix

    Add a visible main heading that states the page's topic.

    Web accessibility guide →

  • Language attribute (lang)

    Needs a developer

    Why it matters

    Google detects language from the content, not the lang attribute, but screen readers rely on it to pronounce text correctly.

    Fix

    Add lang="en" (or the page's language) to the <html> tag.

    Web accessibility guide →

  • Mobile viewport

    Needs a developer

    Why it matters

    Google uses the mobile version of a site for indexing and ranking. Without a viewport tag the page opens at desktop width on a phone.

    Fix

    Add <meta name="viewport" content="width=device-width, initial-scale=1">.

    SEO-friendly website guide →

  • Image descriptions (alt text)

    You can do this

    Why it matters

    Google uses alt text to understand what an image shows, and screen readers use it to describe the image.

    Fix

    Give every meaningful image alt text describing what it shows. Give decorative images an empty alt="".

    Web accessibility guide →

  • Content in the HTML

    Needs a developer

    Why it matters

    Google can run JavaScript, but pages may wait in a rendering queue, and not every bot runs JavaScript. Server-delivered text is the safest route.

    Fix

    Put the main content in the HTML with server-side or pre-rendering (SSR/SSG).

    SEO-friendly website guide →

4 checks

Speed

How fast do real Chrome users find the page?

  • Main content load (LCP)

    Needs a developer

    Why it matters

    Google's good threshold is 2.5 seconds for the main content to load, for at least 75% of visits.

    Fix

    Shrink and prioritize the largest image, speed up the server response, cut render-blocking resources.

    Core Web Vitals guide →

  • Response to taps (INP)

    Needs a developer

    Why it matters

    Google's good threshold is a visible response within 200 milliseconds of a tap.

    Fix

    Break up long JavaScript tasks and cut third-party scripts.

    Core Web Vitals guide →

  • Layout shift (CLS)

    Needs a developer

    Why it matters

    Google's good threshold is 0.1: content shouldn't jump while the page loads.

    Fix

    Reserve space for images and embeds, and control font swaps.

    Core Web Vitals guide →

  • HTML size

    Needs a developer

    Why it matters

    Bloated HTML is downloaded on every visit and delays the first render.

    Fix

    Move large inline scripts and embedded data out into separate files.

2 checks

Structured data

Are you telling Google what you are, in terms machines understand?

  • Structured data (JSON-LD)

    Needs a developer

    Why it matters

    Google uses structured data to understand a page's content and recommends JSON-LD in most cases.

    Fix

    Add JSON-LD that fits the page type and validate it with Google's Rich Results Test.

    Schema markup guide →

  • Organization markup

    Needs a developer

    Why it matters

    Organization or LocalBusiness markup helps Google and AI systems tell your brand apart from others. It matters most on the homepage.

    Fix

    Add Organization markup to the homepage with name, logo, address, contact and sameAs profiles.

    Entity SEO guide →

3 checks

AI search access

Can ChatGPT, Perplexity and Claude read you?

  • Search and AI answer bots

    Needs a developer

    Why it matters

    These bots decide whether the page can appear in Google, Bing, ChatGPT Search, Perplexity and Claude answers.

    Fix

    Remove the robots.txt rules that block these bots.

    AI crawlers guide →

  • Model-training bots

    Needs a developer

    Why it matters

    GPTBot, ClaudeBot, Google-Extended and CCBot collect content for model training. Blocking them doesn't affect search visibility. It's a choice.

    Fix

    Not an error. Whether to allow training is your business's decision.

    AI crawlers guide →

  • llms.txt

    You can do this

    Why it matters

    An optional file that summarizes a site. Google says you don't need AI text files like this to appear in AI Overviews or AI Mode.

    Fix

    Not required. If you add one, keep it short, accurate and at the root.

    llms.txt guide →

1 check

International

Do the language versions point at each other?

  • Language versions (hreflang)

    Needs a developer

    Why it matters

    If the site has several languages, hreflang tells Google each version's counterpart. Every version should list itself and the others.

    Fix

    Give every language version hreflang tags listing itself, the other languages and an x-default.

    Multilingual SEO guide →

How this SEO checker is different

Every result comes with a reason

Each result tells you what we found, why it matters and how to fix it. We don't flag things Google says don't matter.

Speed is measured from real visitors

Speed results are based on data Google collected from real Chrome users over the last 28 days. If there's none, we run a lab measurement on Google's test phone.

It checks AI bots too

Shows whether ChatGPT, Perplexity and Claude bots can reach your site. Search bots have a solid outline, training bots a dashed one.

These may help you read your results: what makes a website SEO-friendly and a step-by-step audit with Google's free tools.

Method and data sources

We download your page once and read the HTML the server sends. We don't run JavaScript. We read robots.txt separately for Googlebot and for each AI bot.

Speed data comes from Google's Chrome UX Report (CrUX): real users' mobile measurements over the last 28 days (75th percentile). The 'good' limits are the Core Web Vitals limits on web.dev: LCP 2.5 seconds, INP 200 milliseconds, CLS 0.1.

Written by the Caliency SEO team. Last updated:

What one check reads
  1. The page itselfsiteniz.com
  2. Bot rules/robots.txt
  3. AI summary (if any)/llms.txt
  4. Speed data, from GoogleChrome UX Report
  5. Sitemap (if robots.txt has none)/sitemap.xml
  6. The www or non-www spellingwww.siteniz.com
  7. Lab measurement (if there's no speed data)PageSpeed Insights

What this tool doesn't check

Not coveredWhere to look
Crawling the whole siteSearch Console, Pages report
Whether the page is actually indexedSearch Console, URL Inspection
Detailed speed diagnosticsPageSpeed Insights
Rankings, clicks, backlinksSearch Console, Performance report
Content built later by JavaScriptSearch Console, URL Inspection

Questions about the SEO checker

Let's read your result together.

Send us the report link and we'll tell you, within one business day, which items actually matter.

Write to us

What is an SEO check?

An SEO check reviews the technical and content factors that decide whether a website can be found, crawled and understood correctly by Google: whether the page can be indexed, its title and description, mobile setup, speed, structured data and bot access. This tool runs 25 of those checks in a few seconds and explains why each result matters.

Is this SEO checker free? Do I need an account?

It's free. No sign-up, email or account needed. To prevent abuse, one network can run up to 8 checks every 10 minutes.

Is an SEO checker the same as a website grader?

Mostly, yes. "Website grader", "site audit tool" and "SEO checker" usually describe the same job: checking a site's technical setup, content and speed. This tool examines one page from Google's point of view. It doesn't crawl the whole site. For that, use Search Console's Pages report or a crawler.

How is the SEO score calculated?

The score is the share of measurable checks that passed. There's no hidden weighting, and info items are left out. A single number can hide a serious problem: a noindex tag that removes the page from Google weighs the same as a missing share image. So we also list problems in order of importance, and if the page can't appear on Google, we say so at the top, whatever the score.

Where does the speed data come from?

From Google's Chrome User Experience Report (CrUX): the 75th percentile of real Chrome users' mobile experience over the last 28 days, the same field data Google uses to assess Core Web Vitals.

Why do I see "no speed data"?

Google only publishes CrUX data once a page or site has enough visits from Chrome users. New or low-traffic sites won't have it. That isn't an error. In that case, the report shows a lab measurement from Google's test phone instead.

Does blocking AI training bots hurt search visibility?

No. GPTBot, ClaudeBot, Google-Extended and CCBot collect content for model training. Blocking them doesn't stop your site appearing in ChatGPT Search, Claude or Google Search. Visibility depends on the search bots: Googlebot, Bingbot, OAI-SearchBot, PerplexityBot and Claude-SearchBot.

Do you store the address I check?

No. The address and the result are kept in server memory for 30 minutes so the same site isn't fetched again and again, then deleted. Nothing is written to a database. To get speed data, the address is sent to Google's CrUX service.

Want help fixing what you found?

We fix technical SEO for a fixed price. First, a short free call to look at what matters for your site.

Book a call See our SEO service