Check on-page SEO from pasted HTML, not from a cloud crawl

Most SEO suites want a URL, a project, and a crawl budget. That is the right product if you manage a thousand URLs. It is the wrong product if you have one landing page in a text editor and you do not want a bot hitting staging.

SEO Score is the small version. Paste HTML. The tab checks on-page basics. We do not crawl. We do not keep the source.

What the checker looks at

On-page means the document you pasted: title, meta description length, heading outline, image alt, link count, and other HTML facts the script can see. It is not a rank tracker. It is not Search Console. It does not log into Google.

The sibling GEO Score looks at citeable structure for AI answers. Run SEO first if you still have an empty <title>. Run GEO when the page already has headings and you want FAQ and date shapes.

How to check a page

1. Open https://tools.sw-commercial.com/seo.
2. Paste View Source HTML. Optionally paste robots.txt and llms.txt.
3. Read the findings. Edit your file. Paste again.

You do not create an account. You do not add a property to a dashboard. Free use is the whole product for this checker.

Limits you should expect

JavaScript-rendered apps may paste an empty shell if you copy the first HTML, not the DOM after hydrate. For those sites, use the browser inspector on the rendered document, or paste a static export. The checker cannot see what a user would see after five XHR calls unless that HTML is in the paste.

It will not tell you your competitors. It will not rewrite the copy. It will not promise position one.

What we do not do

We do not fetch the URL. We do not store the HTML. Ads, if shown, are labeled. The Chrome extension SW Toolbox is for files, not for this score. PlayNest at learning.sw-commercial.com is kindergarten games, not SEO.

For AdSense reviewers and for you: real URL, real paste, no crawl queue.

A worked example

Paste a blog post that uses one h1 and no h2. The outline finding should complain. Add h2 sections that match how a person would scan. Add alt text on the one content image. Shorten a 300-character meta description. Paste again.

If you paste a Next.js flight payload instead of the document, the checker will score garbage. Use View Source on the URL you will ship, or the out/ HTML from a static export.

What “on-page” excludes

It excludes backlinks, Core Web Vitals lab data from a remote farm, and Search Console impressions. Those need other products. This tool is the HTML you already have, scored locally so a staging site never gets a third-party crawl.

When to skip this tool

Skip it for PDF-only manuals. Skip it if you cannot paste HTML. Use GEO Score when the question is citeability for answer engines rather than classic title and headings.

The catalog lists both checkers under webpage tools on tools.sw-commercial.com. Neither checker needs an SW Commercial account. Neither checker stores the paste after you close the tab, beyond what your own browser cache does for any page.

FAQ

Do you upload the file or the paste?

No. SEO Score runs in your browser. We do not run an upload API for this job. If a model file downloads on first use, that is a program, not your document.

Do I need an account?

No. Open the page and use it. Free use does not start with an email wall. Optional Pro on other products is a one-time key; it is not required to try SEO Score.

What happens if I clear the site data?

Drafts in the browser disappear. Exports you already downloaded stay on your disk. That is why we say export when the result matters.

Can I use this on a phone?

Yes, if the browser can pick a file or paste text. Heavy models are slower on a phone. That is your device doing the work, not a queue on our GPU.

Do ads see the content?

Labeled ads, if shown, do not receive the file or the paste. The SW Toolbox extension has 0 ads. This page is a webpage tool on tools.sw-commercial.com.

How does this sit in the August 2026 series?

From 22 August backward, the catalog blog names one live product per day. SEO Score is the product for this date. Sibling days cover other tools on the same host, then PlayNest on learning.sw-commercial.com (24 August) and SW Toolbox (25 August).

URL crawl?

We do not fetch your URL. Paste HTML.

Search Console?

This is not Search Console. It will not show impressions.

For AdSense reviewers: the URL above is live. The steps are the product. There is no placeholder converter behind the link.