By Hridoy Ahmed | Last updated: October 2026 | 8 min read
Short answer: An SEO audit tool crawls your website and reports problems such as broken links, missing titles, slow pages and indexing issues. For most small sites, free tools are enough to start: Google Search Console, Bing Webmaster Tools and the free version of Screaming Frog. Paid and enterprise tools help when your site is large or you manage many sites. No tool fixes anything by itself. A person still has to decide which issues matter.
The 17 tools below are in no particular order. I did not rank them. Features and prices change often, so check each official site before you pay.
In this guide
- How to choose an SEO audit tool
- Free tools to start with
- All-in-one SEO platforms
- Dedicated crawlers
- Other audit and monitoring tools
- Common mistakes
- FAQ
How to choose an SEO audit tool
- Check your site size. A site with a few hundred pages needs less than a store with 100,000 URLs.
- Decide desktop or cloud. Desktop crawlers run on your computer. Cloud tools run online and can schedule crawls and send alerts.
- Look at reports you can act on. A long list of warnings helps little. You want clear priorities.
- Count the full cost. Some tools charge per project, per page crawled or per user.
- Combine tools if needed. One tool rarely covers everything.
Free tools to start with
1. Google Search Console
Free, and it comes straight from Google. It shows which pages Google has indexed, which it left out and why, plus Core Web Vitals, mobile usability and search performance. It does not crawl your whole site like a crawler. It shows what Google itself sees, which makes it the first tool to set up.
2. Bing Webmaster Tools
Free from Microsoft. It shows how Bing sees your site, including indexing and crawl data, and it has a site scan feature. It is easy to skip, but it is worth setting up beside Search Console.
3. Screaming Frog SEO Spider
A desktop crawler. The free version crawls up to 500 URLs, and a paid licence removes that limit and adds advanced features. The licence price listed at the time of writing is £199 per year. It finds broken links, redirects, duplicate pages, missing titles and meta tags, and more. It is popular with SEO professionals and fits small sites well on the free version.
All-in-one SEO platforms
These tools include a site audit next to keyword research, rank tracking and backlink data. They suit people who want everything in one login.
4. Ahrefs Site Audit
A cloud-based crawler inside Ahrefs. It checks technical and on-page issues and shows how your pages link to each other. It is part of a larger paid platform, so check its current plans and any free options for sites you own.
5. Semrush Site Audit
The audit tool inside Semrush. You set up a project, run a crawl and get a health score and a list of issues sorted by type. It suits people who already use Semrush for keywords and competitors.
6. SE Ranking Website Audit
A cloud audit tool inside the SE Ranking platform. It is often looked at by freelancers and small agencies who want audits and rank tracking together.
7. Serpstat Site Audit
Serpstat is an all-in-one SEO platform, and its audit module checks technical issues across your pages. It suits small teams who want one tool for several tasks.
8. SEO PowerSuite
A desktop software bundle. Its WebSite Auditor tool does the audit. It suits people who prefer to run tools on their own computer and not pay for cloud accounts. Check its current free and paid limits.
Dedicated crawlers
These focus on crawling and technical analysis, often for larger sites.
9. Sitebulb
A desktop crawler known for its visual reports and clear explanations of each issue. It is a good fit if you want the “why” behind a problem and not only a list of errors.
10. JetOctopus
A cloud crawler with log file analysis. Log analysis shows how Googlebot actually visits your site. It is aimed at large websites, such as big stores and publishers.
11. Lumar
A cloud platform for enterprise technical SEO. It was formerly known as DeepCrawl. It suits big teams that need regular crawls, reports and workflows across many pages.
12. Oncrawl
A technical SEO crawler that also combines crawl data with log files and other data sources. It targets large sites and SEO teams that want deeper analysis.
Other audit and monitoring tools
13. Sitechecker
A web-based tool for site audits and monitoring. It gives a simple report and is aimed at small businesses and freelancers.
14. WooRank
A website review tool that gives an SEO score and a list of tips. It has long been used for quick checks and client reports. Check what its plans and free reviews include today.
15. ContentKing
ContentKing was a real-time website monitoring tool. Conductor acquired it in 2022, and its technology is now part of Conductor’s platform as a monitoring module. It is an enterprise product, so ask Conductor about plans if you need it.
16. Seobility
A web-based SEO tool with a site audit module. It is often compared with other budget-friendly platforms. Check the official site for current plan limits.
17. Screpy
An AI-based website monitoring and audit tool. It is built on Google Lighthouse checks for speed and SEO. It is a smaller tool, so check that it is still the right fit for you before you commit.
Common mistakes
- Chasing a score of 100. A health score is a rough guide. Fix what hurts crawling, indexing and users first.
- Fixing every warning. Some warnings do not matter for your site. Sort by impact.
- Running one crawl and stopping. Sites change. Audit again after big updates and on a regular schedule.
- Using only a crawler. A crawler cannot show what Google decided. Pair it with Search Console.
- Not knowing what you are fixing. If you are unsure how to run the audit itself, start with my SEO audit step-by-step guide.
What I suggest for most small sites
- Set up Google Search Console and Bing Webmaster Tools.
- Run the free version of Screaming Frog on your site.
- Fix the biggest issues first: pages that cannot be indexed, broken links and missing titles.
- Only pay for a bigger tool when your site or workload needs it. For more options, see my list of best SEO tools for small businesses.
If you run a WordPress site, my technical SEO checklist for WordPress shows what to check after the crawl.
FAQ
What is the best free SEO audit tool?
Google Search Console is the best first tool because it shows Google’s own data. Add the free version of Screaming Frog for a full crawl of up to 500 URLs.
Do I need a paid SEO audit tool?
Not always. A small site can do a good audit with free tools. Paid tools help with large sites, scheduled crawls and team reports.
How often should I run an SEO audit?
Many sites do a full audit a few times a year, and a quick check after major changes such as a redesign or a migration. Search Console is worth checking more often.
Can an audit tool improve my rankings?
No. A tool only finds issues. Fixing them can help your site be crawled and understood better, but no tool or person can promise rankings.
What is the difference between a crawler and Search Console?
A crawler visits your pages the way a bot would and lists problems it finds. Search Console shows what Google actually indexed and any problems Google reported.
Need an expert to read the results?
Tools give you data. Deciding what to fix first takes experience. If you would rather have this done for you, see my SEO and technical SEO service. I work manually and white-hat, with no shortcuts and no ranking promises.