Free SEO tools can show you a score in seconds. They can also hand you a long list of red warnings. For a busy owner, it's hard to tell what matters.
Some warnings point to real problems that keep customers from finding you. Others are only a tool's preferences. This guide shows how to sort them using Google's own advice.
Reporting note: We checked this guide against Google's public documentation on October 31, 2026.
Key takeaways
- Google says third-party tools don't have its ranking data
- A tool's score and predictions are that tool's own
- Some warnings point to real problems, and others are preferences
- Check each fix against Google's documentation before you pay
- Search Console gives you data straight from Google
What does an SEO score actually measure?
An SEO score is a number a tool builds with its own formula. Each tool picks its own checks and how much each one counts. That's why two tools can grade the same page differently.
Google's page on third-party SEO tools and advice is clear about this. It says these tools don't have access to Google's internal ranking data. It also says their predictions are their own and may not come true.
A high score isn't a grade from Google. A low score isn't a penalty. Treat the number as a rough to-do list from a stranger.
Google adds two more points on the same page. It doesn't evaluate third-party services, so be wary of anything that claims Google's approval. And using a tool doesn't guarantee ranking success.
Free SEO tools: which warnings usually matter?
Start by sorting each warning into one of three groups. It only takes a few minutes. It can also save you from paying for the wrong fix.
- Blocks customers: broken pages, a failing contact form, or pages that fail on phones
- Blocks Google: an important page set to noindex or blocked from crawling
- Preference: a tool's own rule about word count, title length, or heading order
Fix the first two groups first. They can stop people and Google from reaching your pages. The third group can often wait, and some of it you can skip.
Here's how Google's documentation answers some common warnings. Tools word these differently, so match them by meaning.
Scroll sideways to read the full table.
| Warning | What Google's documentation says | What to do |
|---|---|---|
| Meta keywords tag is missing | Google Search doesn't use that tag | Ignore it |
| Page has too few words | Length alone doesn't affect rankings | Add words only if readers need them |
| Headings are out of order | Heading order doesn't matter for Search | Fix it if it helps screen reader users |
| Title is too long | There's no limit, but results cut long titles | Keep it brief and specific |
| Meta description is missing | Snippets come mainly from page content | Write one for your key pages |
| Duplicate content found | It isn't penalized, though it's inefficient | Choose one main version of the page |
| Toxic links found | Most sites won't need the disavow tool | Don't disavow without a real link problem |
Our sources: the SEO Starter Guide, title link page, snippet page, and disavow help page. Read the source before you spend money on a fix.
That last row deserves care. Google says misusing the disavow tool can hurt your site's performance in Search. It's meant for a narrow case tied to spammy links and manual actions.
Why can a speed score look bad when your site feels fine?
Many tools run a lab test. It loads your page on one set device and network. Your real customers use many phones, networks, and locations.
Google's web.dev site explains this as lab and field data. Field data comes from real visits, so it shows what people actually went through. It advises using field data to set priorities and lab data to debug.
Search Console's Core Web Vitals report uses data from real visits. A small site may not have enough visits to show data there. If so, use a lab test to find problems, then try a real phone.
Google publishes three Core Web Vitals targets. Pages should load within 2.5 seconds and respond in under 200 milliseconds. Layout shift should stay below 0.1.
Google recommends meeting those targets, but it doesn't say they guarantee rankings. They still matter for people. A slow or jumpy page is hard to use on a phone.
How to check a tool warning against Google's advice
This check works for any warning from any tool. Run it before you approve a fix or pay for one.
- Copy the exact warning and the page it names
- Find the topic in Google's Search documentation
- Look for a stated rule, not a tool's rule of thumb
- Open the page on your phone, the way a customer would
- Check the page in Search Console's URL Inspection tool
- Fix it if it hurts customers or Google's access
- Write down what you changed and the date
That last step matters more than it looks. The SEO Starter Guide says changes can show up in hours or take several months. It suggests waiting a few weeks before you judge a change.
Advice gets the same test. Google says good advice either calls itself opinion or cites official guidance. That covers AI search advice too, which aims to help AI answers mention your business.
What should you use instead of a score?
Google strongly recommends Google Search Console, whether or not you use other tools. It's free, and its data comes directly from Google Search. Three parts cover most small business needs.
- Performance report: the searches that show your site and the clicks you get
- URL Inspection tool: whether Google has indexed a key page
- Core Web Vitals report: how your pages perform for real visitors
Don't panic if a tool says some pages aren't indexed. Google's Page indexing report help says you shouldn't expect every URL to be indexed. The goal is to get your important pages in.
The same page says sites with fewer than 500 pages probably don't need that report. A quick check of your key pages is often enough. Start with your homepage and your main service pages.
When is a paid SEO tool worth it?
Paid tools can save time on larger sites. They can crawl every page and catch broken links you'd never find by hand. Google says some services can be helpful, so don't write them all off.
Before you pay for one, ask these questions:
- Does it say where its data comes from?
- Does it explain why each warning matters?
- Does it point to Google's documentation?
- Does it avoid promising rankings or claiming Google's approval?
Red flags in a free audit or SEO pitch
Some free audits arrive as a cold email with a scary score. Google's Do you need an SEO? page warns about unsolicited emails that claim search problems. It lists other warning signs too.
- Talk of a sure top spot on Google
- A claimed special relationship with Google
- A tool or firm said to be approved by Google
- Vague answers about what they'll change
- A focus on link schemes
You stay responsible for what a hired company does to your site. For an audit, Google suggests giving read-only Search Console access at first. Ask providers to document every change and explain why.
Our guide to SEO pricing shows what a monthly plan may cover. Our SEO services aim to help customers find you. Our consulting team can talk through an audit with you.