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id13dev SEO — free tool

Website SEO audit

Enter a page URL — the service runs 50+ checks and returns a clear report: what is wrong, why it hurts search, and how to fix it.

No sign-up — up to 10 checks per month, report kept for 3 days

57 checks on every page
$0 no sign-up, no payment
10 audits a month as a guest
4 audit types: page, list, sitemap, HTML
  • Title
  • Meta description
  • H1 tag
  • Meta keywords
  • 404 page
  • robots.txt page
  • Sitemap
  • AI search
  • Language attribute
  • Favicon
  • Meta robots
  • Meta robots images
  • Header robots
  • Header robots images
  • Meta refresh tag
  • Response time
  • Time to first byte (TTFB)
  • Page size
  • DOM size
  • Meta viewport
  • Meta charset
  • Deprecated HTML tags
  • Server and X-Powered-By headers
  • Server compression
  • Doctype declaration
  • Social links
  • Words count
  • Top used words
  • Plaintext emails
  • Text to HTML ratio
  • Secure URL (HTTPS)
  • Valid SSL certificate
  • Redirects and site duplicates
  • Mixed content
  • Inline CSS
  • Image formats
  • Image alt attributes
  • Lazy loading images
  • Image dimensions
  • Other headings
  • Canonical URL
  • SEO friendly URL
  • Language versions (hreflang)
  • HTTP/2 enabled
  • Unsafe forms
  • Unsafe external links
  • Render-blocking scripts
  • HTTP requests
  • Internal links
  • External links
  • Open graph
  • Schema.org structured data
  • Safe browsing
  • Strict transport security
  • Content security policy
  • Security headers
  • SPF record
  • Referrer policy
Process

How it works

  1. Enter the page URL

    A single page, a list of URLs, a sitemap or raw HTML.

  2. Run the audit

    The page is fetched directly and checked within seconds.

  3. Fix what was found

    Every issue comes with an explanation and a concrete recommendation.

Checks

57 checks across six areas

From basic document markup to performance and connection security.

Basic document setup

Doctype, charset, page language, favicon, a proper 404 page and robots.txt.

On-page SEO

Title, meta description, H1, canonical, indexability, Open Graph and structured data.

Content quality & markup

Word count, heading structure, text-to-HTML ratio and keyword usage.

Media & image optimization

Image formats, alt attributes and lazy loading.

Technical & performance factors

Response time, page size, HTTP/2, compression, SSL, HSTS and CSP.

Links

Internal and external links, unsafe link targets and forms on insecure URLs.

The result

A readable technical report, not a pile of cryptic errors

Every item explains what exactly is wrong, why it matters for search and what to change to fix it. No vague advice like “improve your SEO”.

Check a website
  • Overall score out of 100

    See the state of the page and how many checks it passed at a glance.

  • Issues sorted by severity

    Major, moderate and minor — so you know what to fix first.

  • A recommendation for every issue

    What exactly to change in the page code or in the server configuration.

  • Comparison with the previous audit

    A re-run shows what was fixed and what has appeared since.

Platform

Platform features

To keep a website in shape continuously, not once a year.

Four audit types

A single page, a bulk list of URLs, a sitemap or pasted HTML.

Scheduled re-checks

Audits repeat on a schedule — from a few hours to a month.

Audit archive

Previous versions are kept, so changes are visible over time.

Change notifications

Email, Telegram, Slack, Discord or a webhook when something changes.

Shareable report link

Share a report or lock it behind a password.

Export

PDF, CSV or JSON — for a client or for your own records.

Custom domain

Serve audit reports from your own domain.

REST API

Trigger audits and pull results straight from your code.

Who is behind it

Built by a working engineer, not a marketing agency

id13dev does backend development and DevOps: OpenCart, WordPress, OkayCMS, VPS, Nginx, Redis, Docker. This tool grew out of daily work — the same issues had to be found by hand in client projects hundreds of times.

More about me on id13.dev
  • Technical findings, not «add more keywords»

    Checks describe concrete things in code and on the server: canonical, indexability, compression, HTTP/2, HSTS, CSP, image sizes and formats.

  • Audits run from our own server

    Neither your data nor the audited URLs are sent to third parties. Vendor telemetry and external CDNs were removed from the product.

  • Findings can be handed to a developer

    Reports export to PDF, CSV or JSON — worded precisely enough to file as a task without translation.

Client reviews

Client reviews of id13dev

Real reviews from Freelancehunt — left after completed deals through escrow. None of the text was written by me.

100 positive reviews 10/10 average rating 98.04% successful deals
★ 10

не вперше звертаюсь миттєва реакція та професійна робота Рекомендую до співпраці!

Project: Оптимізувати максимально сайт на Вордпресі
Tool or service

Tool or manual audit?

An automated check sees what can be read from the page code. The rest still has to be looked at by hand.

Paid service

Manual audit by id13dev

  • Root causes, not just symptoms
  • Server logs, load and database analysis
  • Core Web Vitals on real users, not a single page
  • Priorities based on your business and budget
  • Fixes done by a developer, not just a list
FAQ

Frequently asked questions

Didn't find an answer? Message me — I reply within a day.

Message on Telegram
Do I need an account?
No. You can audit a page right away — guests get 10 audits per month and results are kept for 3 days. An account removes those limits.
What exactly does the audit check?
The technical state of the page: document markup, SEO tags and indexability, content quality, images, performance, connection security and links. The full list of checks is in the section above.
Can I audit any website?
Yes, any publicly available page. Some sites block automated requests or sit behind bot protection — in that case the audit returns an error instead of a report.
Where do the requests to my site come from?
From our server, as a single ordinary request, just like a browser. The page is not modified and audit data is not shared with anyone.
Will the audit guarantee better rankings?
No, and no tool can promise that. An audit surfaces the technical problems that stop search engines from processing your page properly. Rankings also depend on content, links and competition.
Are audited URLs stored?
Audits are stored so you can come back to them: 3 days for guests, then deleted automatically. Nothing is shared: the service runs on its own server, with vendor telemetry and third-party CDNs removed.
What should I do with the results?
Start with issues marked as major — they affect the score most. Each one explains exactly what to change. The report exports to PDF, CSV or JSON and can be handed to a developer as a specification.
How many checks are available without signing up?
The audit runs every check whether or not you are signed in. Guests see most of the results and get 10 audits per month, with reports kept for 3 days; the remaining results, change history, notifications and API come with an account — I issue those manually, write to help@id13.dev or Telegram @id13dev.
How is this different from a manual SEO audit?
The tool checks what is visible in the page code: tags, markup, response headers, file sizes and formats. It cannot see causes — why the server responds slowly, what loads the database, how real users behave. That requires a manual audit with access to the server and analytics.
id13dev koala — the service author's avatar id13dev services

Found problems but no one to fix them?

id13dev — backend and DevOps: speeding up and maintaining OpenCart, WordPress and OkayCMS sites, server setup, and fixing the technical issues found here.