Short answer
SE Ranking is the best SEO audit tool for most people. Core audits 250,000 pages a month in the cloud on a schedule, renders JavaScript, and comes with rank tracking and research for $129/mo. Screaming Frog is the desktop crawler most technical SEOs already use, and at £199 a year it's cheap. Sitebulb is the friendlier desktop option, with clearer explanations of each issue.
Top picks
Prices checked November 2026
- Best overall
SE Ranking
Best overall: scheduled cloud audits plus a full SEO suite
Starts at $129/mo ($103.20 annually)
Try free for 14 days - Best desktop crawler
Screaming Frog
Hands-on technical crawling
Starts at £199 per licence a year; free up to 500 URLs
Screaming Frog pricing - Best explained audits
Sitebulb
Clear, explained desktop audits
Starts at $18/mo (Lite)
Sitebulb pricing
On this page
- SEO audit tools: comparison table
- Desktop crawler or cloud audit?
- What a year of auditing costs
- SE Ranking
- Screaming Frog
- Sitebulb
- Semrush Site Audit
- Ahrefs Site Audit
- Sitechecker
- Lumar
- Google Search Console
- What a good SEO audit should check
- How to choose an SEO audit tool
- How we compared these SEO audit tools
- FAQ
- The bottom line
SEO audit tools compared
List prices from each vendor's pricing page, checked November 2026. Monthly billing unless marked otherwise.
| Tool | Type | Entry price | Crawl limit at entry | Trial or free option | Link |
|---|---|---|---|---|---|
| Our pickSE Ranking | Cloud suite | $129 ($103.20 annual) | 250,000 pages a month | 14 days, no card | Try SE Ranking |
| Screaming Frog | Desktop crawler | £199 a year per licence | No URL limit with licence | Free up to 500 URLs | Screaming Frog |
| Sitebulb | Desktop (Cloud option) | $18 (Lite) | 10,000 URLs per audit | 14-day trial | Sitebulb |
| Semrush | Cloud suite | $139 ($117.33 annual) | Plan-based | 7 days; free plan | Semrush |
| Ahrefs | Cloud suite | $129 (Lite) | 100,000 crawl credits | Ahrefs Free for your own sites | Ahrefs |
| Sitechecker | Cloud audit and monitoring | $149 ($125 annual, Standard) | Plan-based | Free trial | Sitechecker |
| Lumar | Enterprise cloud | Quote only | Custom | Demo | Lumar |
| Search Console | Google's own reports | Free | Your own sites | Free | Search Console |
Desktop crawler or cloud audit?
Desktop crawlers (Screaming Frog, Sitebulb) run on your laptop. You start a crawl, wait, dig in, export. They're cheap and very flexible, and you control every setting. The downside: no crawl runs while your laptop is off, and sharing results means sending files.
Cloud audits (SE Ranking, Semrush, Ahrefs, Sitechecker) crawl on a schedule, keep the history and alert you when new issues appear. They're easier for clients and teams, and usually come bundled with rank tracking and research.
Many SEOs use both: a cloud audit for weekly monitoring and Screaming Frog for deep one-off checks.
What a year of auditing costs
An illustrative price calculation for one SEO auditing a handful of client sites every month. List prices; your checkout may differ.
- Screaming Frog: £199 a year for one licence. Crawling only, no tracking.
- Sitebulb Pro: $42 × 12 = $504 a year on monthly billing, or about 15% less paid yearly. Crawling only.
- SE Ranking Core: $103.20 × 12 = $1,238.40 a year, with 2,000 daily tracked keywords and unlimited research included.
- Semrush SEO: $117.33 × 12 = $1,407.96 a year, billed annually.
If all you need is a crawler, Screaming Frog wins on price. If you'd otherwise buy a rank tracker and keyword tool as well, a suite usually costs less overall.
SE Ranking: best SEO audit tool for most people
SE Ranking's Website Audit runs in the cloud as part of its full SEO suite.
The SE Ranking website audit page lists JavaScript rendering, Core Web Vitals checks, custom crawl schedules and up to 2 million pages per project. On the pricing page Core ($129/mo, $103.20 annually) audits 250,000 pages a month and Growth ($279/mo, $223.20 annually) audits 2 million. Issues are grouped by priority, and you can send white-label audit reports to clients through the Agency Pack.
More on the whole suite in our SE Ranking review.
Pros
- Scheduled cloud audits with JavaScript rendering
- Rank tracking, keyword and backlink research in the same price
- Client-ready reports
- 14-day trial with no card
Cons
- Less raw configuration than Screaming Frog
- Monthly page cap, so very large sites need Growth
- Payments generally aren't refunded
Screaming Frog: best desktop crawler
The SEO Spider is the tool most technical SEOs open first. It crawls a site like a search engine and lets you filter, extract and export almost anything.
The Screaming Frog pricing page says the free version crawls up to 500 URLs. A licence costs £199 per user a year (£189 each for 5 to 9 licences) and removes the limit. Paid features include JavaScript rendering, custom extraction and crawl comparison.
Pros
- Huge control over every crawl setting
- Cheap paid licence, free tier for small sites
- Custom extraction and integrations with GA4 and Search Console
Cons
- Runs on your computer, no built-in scheduling in the cloud
- Steep learning curve
- No rank tracking or keyword research
Sitebulb: best for explained audits
Sitebulb is a desktop crawler that explains each issue in plain English and ranks it by priority. Many people find it easier to hand to clients than raw crawl exports.
On the Sitebulb pricing page Lite is $18/mo for 10,000 URLs per audit and Pro is $42/mo for 500,000 URLs per audit, with extra users at $11/mo. Paying yearly saves 15%. Sitebulb Cloud starts at $125/mo for teams. There's a 14-day free trial.
Pros
- Clear explanations and priorities for each issue
- Good visual reports
- Low starting price
Cons
- Lite caps audits at 10,000 URLs
- Desktop app unless you pay for Cloud
Semrush Site Audit: best if you already use Semrush
Semrush includes Site Audit on its SEO plans and pitches an "AI-ready" audit that flags problems for AI crawlers.
The Semrush pricing page lists the SEO plan at $139/mo ($117.33 annually), with crawl limits per plan. There's a 7-day trial and a free plan.
Pros
- Thematic reports and clear site health score
- Part of a broad marketing toolkit
Cons
- Crawl limits depend on plan
- Pricier than SE Ranking for the same tracking volume
Ahrefs Site Audit: best free audit for your own sites
Ahrefs Site Audit checks 170+ technical issues. The good news: it's included in Ahrefs Free for sites you verify.
Paid plans count crawl credits: 100,000 on Lite ($129/mo), 500,000 on Standard and 1.5 million on Advanced. Always-on auditing is sold as a Project Boost add-on. See how it compares with SE Ranking in SE Ranking vs Ahrefs.
Pros
- Free for verified sites
- 170+ checks
- Unlimited verified projects on paid plans
Cons
- No trial for paid plans
- Always-on audit costs extra
Sitechecker: best for monitoring site changes
Sitechecker combines a crawler with change monitoring: it records new and fixed issues, new and deleted pages and content changes, and shows them as events on Search Console and GA4 charts.
On the Sitechecker plans page Standard is $149/mo ($125/mo billed annually) and Premium $449/mo ($375 annually) with 50 websites and 5,000 tracked keywords. Plans include unlimited users, and there's a free trial.
Pros
- Change monitoring linked to traffic charts
- Unlimited users
Cons
- Pricier than desktop crawlers
- Smaller research toolset than full suites
Lumar: best for enterprise sites
Lumar (formerly Deepcrawl) is an enterprise technical SEO platform for very large sites and teams. Pricing is by quote after a demo.
Pros
- Built for very large crawls
- SOC 2 Type 2 certified
Cons
- No public prices
- Overkill for small sites
Google Search Console: the free baseline
Search Console doesn't crawl your whole site the way an audit tool does, but it tells you what Google actually sees: indexing problems, Core Web Vitals, mobile issues and manual actions.
Pros
- Free, data straight from Google
- Shows pages Google refuses to index and why
Cons
- Your own sites only
- No full crawl or custom checks
What a good SEO audit should check
- Crawlability and indexing: robots.txt, noindex tags, canonicals, sitemap errors
- Broken links and redirects: 4xx pages, redirect chains and loops
- On-page basics: missing or duplicate titles, meta descriptions and H1s
- Speed and Core Web Vitals: slow pages and layout shifts
- JavaScript rendering: content that only appears after scripts run
- Internal linking: orphan pages and deep pages that are hard to reach
- Structured data: errors in schema markup
Backlinks are a separate audit. For that, see our backlink checker comparison.
How to choose an SEO audit tool
- Count your pages. Small sites fit any tool, even Screaming Frog's free version. Large stores need a high crawl limit.
- Decide desktop or cloud. Hands-on analysis points to Screaming Frog or Sitebulb. Scheduled monitoring points to a cloud tool.
- Check what else you'd pay for. If you need rank tracking and research too, a suite like SE Ranking is cheaper than separate tools. Our cheap SEO tools guide covers budget setups.
- Think about clients. Agencies need branded reports and seats; see our SEO tools for agencies guide.
- Use the trial on your real site. Run the audit, then check whether the top issues it flags actually matter.
How we compared these SEO audit tools
In November 2026 we opened each vendor's official pricing and product pages and recorded prices, crawl limits, rendering, scheduling, users, trials and refund terms. Where prices changed with a monthly or yearly toggle, we checked both views. The yearly costs above are our own price calculations from list prices.
We didn't run a side-by-side crawl test, so we don't rank these tools on crawl speed or the number of issues found.
We earn a commission from SE Ranking links. All other links are plain links. See our affiliate disclosure.
Frequently asked questions
What is the best SEO audit tool?
For most people it's SE Ranking: 250,000 audited pages a month on the $129/mo Core plan ($103.20 annually), JavaScript rendering, Core Web Vitals and scheduled audits, plus tracking and research. Screaming Frog is the best desktop crawler for hands-on technical SEOs.
Is there a free SEO audit tool?
Yes. Screaming Frog's free version crawls up to 500 URLs, Ahrefs Free audits sites you verify, and Google Search Console reports indexing and Core Web Vitals problems straight from Google.
Screaming Frog or a cloud audit tool?
Screaming Frog runs on your computer and gives you the most control for £199 a year per licence. A cloud tool like SE Ranking or Semrush crawls on a schedule, emails you when things break and is easier to share with clients.
How often should I run a site audit?
Weekly or monthly for most sites, and always after a redesign, migration or big content change. Large e-commerce sites often audit weekly or run always-on monitoring.
Do SEO audit tools render JavaScript?
Most modern ones can. SE Ranking, Screaming Frog (paid licence) and Sitebulb render JavaScript, which matters for sites built on React, Vue or similar frameworks.
The bottom line
If you want audits running on a schedule next to your rank tracking and research, pick SE Ranking. If you'd rather dig through crawl data yourself, buy a Screaming Frog licence; many SEOs keep one next to a cloud tool anyway. Prefer explained, client-friendly reports from a desktop app? Sitebulb. Keep Search Console connected whatever you choose.
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