Website SEO Audit

What is Website SEO Audit?

Website SEO Audit is an on-page SEO checker and technical SEO audit tool for any list of page URLs or a whole website. Paste page URLs (or type one domain to crawl) and get one row per page with the HTTP status code, an on-page SEO score from 0 to 100, every SEO issue in plain English with a priority (high, medium, low), the title and meta description with their lengths, H1 headings, canonical tag, meta robots / noindex, page size, load time, word count, internal and external links, broken links, images without alt text, duplicate titles and descriptions and the schema.org structured data found on the page.

One row is one page. No browser extension, no login, no API key: the pages are fetched and analysed by an on-page audit engine through a licensed data provider, and broken links are checked by the Actor itself.

• 💰 From $0.03 per audited page on paid plans ($0.04 on the Apify Free plan) — no start fee, no subscription. Free plan: same as the market leader; paid plans ~25% cheaper
• 🆓 Free rows for pages that do not answer 200 (404, 5xx) and for invalid URLs — you only pay for fully audited pages
• 🔗 Broken links checker included at no extra cost — every link on the page is requested, broken ones are listed with their status
• 🗂️ Bulk: up to 1,000 URLs per run, or crawl a domain and audit every page found
• ⚙️ JavaScript rendering ($) for React, Vue and Angular sites, mobile or desktop user agent
• 🤖 Works from the Apify API, the MCP server (Claude, ChatGPT, Cursor), n8n, Make and Zapier

What data can Website SEO Audit extract?

Values below are from a real run on https://apify.com and on a public page with broken links (catb.org/~esr/faqs/hacker-howto.html).

Field	Example	What it means
🔗 url	https://apify.com/	Final URL of the page after redirects
statusCode	200	HTTP status code; only 200 pages are charged
💯 onpageScore	100 / 83.38	On-page SEO score 0–100 (100 = no on-page problems found)
⚠️ issues	["[high] Missing H1 heading", "[high] 16 broken link(s) on the page", "[medium] Missing meta description"]	Every problem in plain English, highest priority first
issueCodes	["no_h1_tag", "broken_links", "no_description"]	The same issues as stable machine-readable codes
issuesCount, highIssues, mediumIssues, lowIssues	16, 3, 3, 10	Issue counts by priority
📰 title, titleLength	Apify: Marketplace of ready-to-run tools for AI, 47	Title tag and its length
📝 metaDescription, descriptionLength	Thousands of tools to automate your business…, 143	Meta description and its length
h1, h1Count, h1All, h2Count	78,661 tools for your AI, 1	First H1, number of H1s, all H1 texts, number of H2s
canonical, canonicalStatus	https://apify.com/, self	Canonical URL; self, other or missing
🤖 metaRobots, noindex, nofollow	index,follow, false, false	Meta robots tag and whether it blocks indexing or following
redirected, redirectTo	true	The requested URL redirected (e.g. http → https)
isHttps	true	Served over HTTPS
⏱️ loadTimeMs	111	Time to load the page (HTML download; full render with JavaScript rendering on)
pageSizeKb	481.3	Size of the HTML document
wordCount, readabilityScore	403, 56.6	Words of visible text; Flesch-Kincaid reading ease
internalLinks, externalLinks	49, 42	Link counts
🔗 linksChecked, brokenLinks, brokenLinkUrls	72, 16, ["http://www.olemichaelsen.dk/hacker-howto.html (404)", …]	Broken links checker results (up to 25 URLs listed per page)
🖼️ images, imagesWithoutAlt	10, 10	Images and images missing alt text
duplicateTitle, duplicateDescription	false	Another audited page in the same run has the same title / description
🧩 schemaTypes, hasStructuredData	["Organization", "WebSite", "SoftwareApplication"]	schema.org types from JSON-LD and microdata
hasOpenGraph, language, hreflangCount	true, en, 0	Social preview tags, html lang attribute, hreflang links
clickDepth	1	Clicks from the start page (domain crawl only)
device, javascriptRendered	desktop, false	How the page was requested

The issues list combines about 45 checks from the audit engine (status codes, title and description length, missing H1, slow load, thin content, render-blocking resources, HTTP links on HTTPS pages, redirect chains and more) with checks the Actor computes itself: noindex, canonical pointing elsewhere, missing canonical, multiple H1, broken links, duplicate title and description across your pages, missing structured data, missing Open Graph tags, missing viewport tag and missing lang attribute.

How much does it cost to run an SEO audit?

Website SEO Audit uses pay-per-event pricing. You pay for audited pages, not for compute time or proxies.

Event	Free plan	Starter (Bronze)	Scale (Silver)	Business (Gold)	When it is charged
💰 Audited page	$0.04	$0.03	$0.02625	$0.0225	A page that answered HTTP 200 and got the full audit
⚙️ Add-on: JavaScript rendering	$0.01	$0.009	$0.008	$0.007	Only when Render JavaScript is on, per audited page

• No start fee and no monthly subscription.
• Free: pages that answer 404, 5xx or another non-200 status (they still appear in the table so you can fix them), invalid URLs, unknown domains, pages that time out, and the optional site summary row.
• The broken links check is free: it does not change the price of a page.
• Platinum and Diamond plans pay the Business price.

Examples on the Starter plan: 100 pages cost $3.00; with JavaScript rendering $3.90. With $1 you can audit 33 pages. On the Free plan 100 pages cost $4.00 ($5.00 with JavaScript rendering), and the $5 of monthly free credit covers about 125 pages. The market leader for full SEO audits on Apify charges $0.04 per page on the Free and Starter plans, $0.035 on Scale and $0.03 on Business (Store prices on 2 October 2026). Free plan: same as the leader; paid plans ~25% cheaper.

How to run an SEO audit with Website SEO Audit

1. Click Try for free and sign in to Apify (a free account is enough).
2. In 🔗 Page URLs, paste the pages you want to check, one per line — or type a domain in 🌐 Domain to crawl to audit the whole site.
3. Set 💯 Max pages (default 100).
4. Leave Check broken links on, and switch on Render JavaScript ($) only if your site is built with React, Vue or Angular.
5. Click Start. Two pages take about 10 seconds.
6. Open the SEO audit tab, sort by onpageScore or highIssues, and export to CSV, Excel, JSON or Google Sheets.

⬇️ Input

Audit a list of page URLs

{
  "urls": ["https://apify.com", "https://apify.com/store"]
}

URLs without https:// are accepted (example.com/page). Duplicates are removed. Up to 1,000 URLs per run, audited in parallel batches.

Crawl a domain and audit every page

{
  "domain": "crawlee.dev",
  "maxPages": 50,
  "includeSiteSummary": true
}

The crawler starts at the domain's home page (or at the start URL you give, e.g. https://example.com/blog) and follows internal links until it has found Max pages. When Domain to crawl is filled in, the URL list is ignored. A crawl of 5 pages took 39 seconds in our test; hundreds of pages take several minutes.

All options

Field	Default	What it does
🔗 urls	2 demo pages	Page URLs to audit
🌐 domain	empty	Domain or start URL to crawl instead of a list
💯 maxPages	100	Most pages per run (1–1,000)
checkBrokenLinks	true	Request every link on the page and list broken ones
renderJavaScript ($)	false	Load pages in a browser with all resources before the audit
device	desktop	desktop or mobile (smartphone user agent)
maxLinksPerPage	100	Links checked per page (1–500); a link shared by many pages is checked once
includeSiteSummary	false	Add one free summary row at the end

⬆️ Output

Page row

{
  "type": "page",
  "url": "http://www.catb.org/~esr/faqs/hacker-howto.html",
  "statusCode": 200,
  "onpageScore": 83.38,
  "issuesCount": 16,
  "highIssues": 3,
  "issues": [
    "[high] Page is not served over HTTPS",
    "[high] Missing H1 heading",
    "[high] 16 broken link(s) on the page",
    "[medium] Missing meta description",
    "[medium] Images without alt text",
    "[medium] No viewport meta tag (not mobile-friendly)",
    "[low] Title is shorter than 30 characters"
  ],
  "title": "How To Become A Hacker",
  "titleLength": 22,
  "metaDescription": null,
  "h1Count": 0,
  "canonicalStatus": "missing",
  "noindex": false,
  "loadTimeMs": 397,
  "wordCount": 9562,
  "internalLinks": 7,
  "externalLinks": 67,
  "linksChecked": 72,
  "brokenLinks": 16,
  "brokenLinkUrls": [
    "http://scientificachievements.com/jak-se-stat-hackerem/ (ENOTFOUND)",
    "http://www.olemichaelsen.dk/hacker-howto.html (404)"
  ],
  "images": 10,
  "imagesWithoutAlt": 10,
  "schemaTypes": [],
  "scrapedAt": "2026-10-01T14:28:14.236Z"
}

(Shortened — every row carries all the fields from the table above.)

The dataset has three table views: SEO audit (score, issues, title, description, H1, broken links), Meta tags & headings and Links & performance.

Site summary row (optional)

With Add a site summary row on, one free row of type summary closes the table: pages audited, average on-page score, pages with high-priority issues, total broken links, duplicate title and description pages, noindex pages and a count of pages per issue code. In domain crawl mode it also carries site checks: sitemap found, robots.txt found, valid SSL certificate and its expiry date, HTTP/2, HTTP → HTTPS redirect and the detected CMS. It is off by default so the table holds only page rows.

Error rows

Input that cannot be audited becomes a free row: {"type": "error", "url": "…", "error": "Domain not found (no DNS record) — check the spelling of the URL. Not charged."}. Pages that answer 404 or 5xx are kept as normal page rows with statusCode and the issue [high] Page not found or blocked (4xx status code), also free.

Use cases for an on-page SEO checker

SEO agencies and freelancers

Audit a client's key pages before a pitch and hand over a prioritised list: high-priority issues first, each named in plain words. Re-run monthly on a schedule to show progress.

Content and marketing teams

Check every new blog post for a missing meta description, a title that Google will cut off, a missing H1 or images without alt text — before it is indexed.

Web developers and QA

Run it after each deploy on your key URLs: catch accidental noindex, canonical tags pointing at staging, redirects, broken links and 404 pages.

Site migrations

Paste the list of old URLs and confirm each one redirects (redirected, url) and the new pages keep their titles, descriptions and canonicals.

AI agents and LLM apps

An agent can call the Actor with a URL and get a flat JSON row it can reason about — issues is already written as sentences, issueCodes is stable for code.

Integrations

Apify API

curl -X POST "https://api.apify.com/v2/acts/lergassy~website-seo-audit/run-sync-get-dataset-items?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"urls": ["https://example.com", "https://example.com/pricing"]}'

Python

from apify_client import ApifyClient

client = ApifyClient("YOUR_TOKEN")
run = client.actor("lergassy/website-seo-audit").call(run_input={"urls": ["https://example.com"]})
for page in client.dataset(run["default_dataset_id"]).iterate_items():
    print(page["url"], page.get("onpageScore"), page.get("issues"))

JavaScript

import { ApifyClient } from 'apify-client';
const client = new ApifyClient({ token: 'YOUR_TOKEN' });
const run = await client.actor('lergassy/website-seo-audit').call({ domain: 'example.com', maxPages: 50 });
const { items } = await client.dataset(run.defaultDatasetId).listItems();

No-code and scheduling

Connect the Actor to n8n, Make, Zapier, Google Sheets, Slack or a webhook from the Integrations tab of the run. Use Schedules to audit your site every week and get the new issues in a sheet.

🤖 For AI Agents & LLM Apps

Compact reference for agents calling lergassy/website-seo-audit through the Apify MCP server or the API.

Purpose: one row per web page with its on-page SEO problems in plain English, an on-page score 0–100 and the raw facts (title, description, H1, canonical, robots, links, broken links, images, schema).

Minimal input: {"urls": ["https://example.com/page"]} or {"domain": "example.com", "maxPages": 20}.

Output fields: type, url, requestedUrl, statusCode, redirected, onpageScore, issuesCount, highIssues, mediumIssues, lowIssues, issues, issueCodes, title, titleLength, metaDescription, descriptionLength, h1Count, h1, h1All, h2Count, canonical, canonicalStatus, metaRobots, noindex, nofollow, redirectTo, isHttps, pageSizeKb, loadTimeMs, wordCount, readabilityScore, internalLinks, externalLinks, linksChecked, brokenLinks, brokenLinkUrls, images, imagesWithoutAlt, duplicateTitle, duplicateDescription, schemaTypes, hasStructuredData, hasOpenGraph, language, hreflangCount, clickDepth, device, javascriptRendered, scrapedAt.

Behaviors an agent should know:

• domain overrides urls; maxPages caps both (default 100).
• issues is sorted high → low priority; issueCodes is in the same order.
• duplicateTitle / duplicateDescription compare pages within the same run only.
• brokenLinks is null when the check is off; links answering 401, 403 or 429 are not counted as broken (often bot protection).
• Only pages with statusCode 200 are billed ($0.03 on Starter, $0.04 on the Free plan, plus $0.009 / $0.01 with renderJavaScript); error rows and non-200 pages are free.

❓ FAQ

Is it legal to audit websites with this tool?

The Actor reads public web pages the same way a search engine crawler does and does not log in or bypass access controls. Auditing your own sites and your clients' sites is standard SEO practice. For other websites, respect their terms of use; if in doubt, consult a lawyer.

How is the on-page score calculated?

onpageScore is computed by the audit engine from its on-page checks on a 100-point scale: 100 means it found no on-page problems, and the score drops as problems are found. Use it to rank pages; use issues to see what to fix.

Does it check broken links?

Yes. Every link on the page (up to Max links checked per page, default 100) is requested. Links that answer 4xx or 5xx, point to a domain that does not exist or fail SSL are listed in brokenLinkUrls with their status. Links answering 401, 403 or 429 are not counted, because sites often return those to automated requests.

Can it audit JavaScript websites?

Yes, switch on Render JavaScript ($). Pages are then loaded in a browser with all resources before the audit, which costs an extra $0.01 per page.

Can I use Website SEO Audit with the Apify API?

Yes — every run can be started from the API, the Python and JavaScript clients, or the run-sync-get-dataset-items endpoint that returns the rows in one call.

Can I use it through an MCP server?

Yes. Add the Apify MCP server (https://mcp.apify.com) to Claude, ChatGPT, Cursor or your own agent and ask it to audit a URL; the agent calls lergassy/website-seo-audit and reads the rows.

Can I integrate it with other apps?

Yes: Google Sheets, n8n, Make, Zapier, Slack and webhooks are available from the run's Integrations tab.

How much does an SEO audit of 1,000 pages cost?

On the Starter plan $30 at $0.03 per audited page, or $39 with JavaScript rendering. On the Free plan $40, or $50 with JavaScript rendering. Pages that do not answer 200 are free.

Do I get one row per page?

Yes. The default table holds only page rows. The optional summary row is off unless you switch it on, and error rows appear only for input that could not be audited.

Why does a page show 403 or 404 here but opens in my browser?

Some sites block automated audit tools or serve them a different page (bot protection, geo-blocking). The row then shows the status code and HTML the audit engine actually received. Such rows are free when the status is not 200. Switching on Render JavaScript ($) or Device: Mobile sometimes helps.

Why is a page I asked for marked as redirected?

redirected: true means the URL you entered sent the browser elsewhere (for example http:// → https://). The row describes the final page in url; your original URL stays in requestedUrl.

Your feedback

Found an issue the audit missed, or a check that fires wrongly on your site? Open an issue on the Issues tab with the URL — we read every one. If the Actor saved you time, a review on the Store page helps other SEO teams find it.

You might also like

Actor	What it does
Bulk Domain Authority Checker	Domain rank, backlinks and referring domains for a list of domains
Keyword Search Volume Checker	Search volume, CPC, keyword difficulty and intent for bulk keywords
Website Tech Gap Scanner	Find websites missing analytics, chat, SEO or marketing tools
Wappalyzer Scraper	Detect the technology stack (CMS, frameworks, analytics) of any website
Website Contacts API	Emails, phones and social profiles from any website