Buyer guide

The Best Free Website Audit Tools in 2026

Most "free" website audit tools are a free sample with a paywall bolted on: a daily limit, a signup wall, or a report that stops just before the useful part. This guide ranks the tools that are genuinely useful for free, and is honest about where each one asks for your card or your email.

Updated 7 tools reviewedRanked on the same criteria7 min read

At a glance

AUAuditZapOur tool
Free tierYes, no signup for the free tools
PriceFree plan, Pro $29/mo or $249/yr
Best forPrioritised fixes with AI instructions
GOGoogle Lighthouse and PageSpeed Insights
Free tierYes, free, no signup
PriceFree
Best forPerformance and Core Web Vitals
SCScreaming Frog SEO Spider
Free tierYes, up to 500 URLs, desktop install
PriceFree, or from £199/year
Best forHands-on technical crawls
SESeobility
Free tierFree plan, one project
PriceFree tier, paid from about $50/mo
Best forBudget ongoing monitoring
SESEO Site Checkup
Free tierA few free checks per day
PriceFree daily checks, paid from about $29.95/mo
Best forA fast one-page score
SESEOptimer
Free tierFree instant audit
PriceFree audit, paid from about $29/mo
Best forWhite-label client reports
WOWooRank
Free tierLimited free review
PriceFree trial, paid from about $53/mo (annual)
Best forMarketing-style reviews

We rank on how much you get without paying, whether you can start without a signup, and how deep the free scan really goes. We tested each tool on a live site and noted where the free tier stops. Prices and limits move, so treat the figures as a July 2026 snapshot and check the current plan before you commit. AuditZap is our own product; we included it because it fits the category, and we ranked it against the same criteria as every other tool on this list.

The tools, ranked

Our toolAuditZap is our tool. We rank it here on the same criteria as every other entry.
1AU

AuditZap

Best for Prioritised fixes with AI instructions

FREEPRO

AuditZap runs 40 checks across critical issues, performance, SEO, quick wins, and AI visibility, then prioritises the findings by likely revenue impact. A free full audit crawls up to 10 pages; Pro crawls up to 50. Every issue can carry an AI-written fix instruction, and reports export to a shareable PDF.

Free tier reality
The single-page tools at /tools run with no signup at all. A free account audit shows full detail on the 9 critical checks plus one AI fix instruction, and still runs all 40 checks so you see the complete score. AI fixes on every issue, the 50-page crawl, and clean watermark-free PDF export are the Pro upgrade (free PDFs are watermarked).
Pricing
The free plan is genuinely free. Pro is $29 per month or $249 per year and unlocks AI fix instructions on every issue, the deeper crawl, PDF reports, and re-audits.
Best for
People who want a prioritised, plain-English fix list rather than a raw data dump, and who value the no-signup tools. If you need a huge unlimited technical crawl, Screaming Frog is the better fit.
Run a free audit
2GO

Google Lighthouse and PageSpeed Insights

Best for Performance and Core Web Vitals

Google's own tools score a single page on performance, accessibility, best practices, and basic SEO, and report Core Web Vitals (LCP, CLS, INP) using both lab and field data.

Free tier reality
Completely free with no signup and no daily limit. The catch is scope: it audits one URL at a time and does not crawl your whole site, so it will not find a broken link three pages deep or a missing meta description elsewhere.
Pricing
Free, funded by Google.
Best for
Anyone diagnosing performance or Core Web Vitals on a specific page. For that job it is the authoritative free tool, and we link to the same field data.
Visit Google
3SC

Screaming Frog SEO Spider

Best for Hands-on technical crawls

A desktop crawler (Windows, macOS, Linux) that pulls a spreadsheet-style export of titles, meta descriptions, status codes, redirects, canonicals, and more across a whole site. It is the reference tool for technical SEO auditing.

Free tier reality
No signup, but it is a desktop app you install rather than a web tool. The free version caps each crawl at 500 URLs and locks JavaScript rendering, scheduling, and integrations behind the licence.
Pricing
A paid licence (around £199 per year at the time of writing) removes the URL cap and unlocks rendering, scheduling, and API integrations.
Best for
People comfortable reading a data-heavy desktop tool who want maximum control over a technical crawl. If you want raw crawl depth over guided fixes, this beats us.
Visit Screaming
4SE

Seobility

Best for Budget ongoing monitoring

Seobility crawls your site for on-page and technical SEO issues and can monitor a project over time, with a rankings module on paid tiers.

Free tier reality
The free plan is real but capped: one project and a limited crawl budget, so it suits a single small site rather than an agency. A signup is required to keep a project.
Pricing
Paid Premium is around $50 per month and lifts the crawl and project limits. See our full AuditZap vs Seobility comparison for the feature-by-feature breakdown.
Best for
Owners of one small site who want free, ongoing SEO monitoring and can live inside the free crawl cap.
Visit Seobility
5SE

SEO Site Checkup

Best for A fast one-page score

Runs an instant one-page SEO scorecard with a checklist of passed and failed items and a shareable summary.

Free tier reality
You get a limited number of free checks per day before it asks you to sign up, and the full report plus monitoring sit behind a paid plan.
Pricing
Paid plans start around $29.95 per month for monitoring and full reports. Our AuditZap vs SEO Site Checkup comparison covers the differences.
Best for
Anyone who wants a quick, single-page score and does not mind the daily cap.
Visit SEO
6SE

SEOptimer

Best for White-label client reports

Generates an instant audit with a grade across SEO, usability, performance, and social, and packages it into a tidy report agencies can white-label.

Free tier reality
The instant free audit is genuinely useful, but white-label PDFs, the embeddable audit form, and lead capture are paid features.
Pricing
Paid plans start around $29 per month (DIY) and scale up for agencies. See the AuditZap vs SEOptimer comparison.
Best for
Agencies that want a branded, client-ready report and an embeddable audit widget on their own site.
Visit SEOptimer
7WO

WooRank

Best for Marketing-style reviews

Produces a marketing-oriented website review with a score, a checklist, and prioritised recommendations aimed at non-specialists.

Free tier reality
The instant free review is limited, and the deeper report plus ongoing tracking need a signup and a paid trial that asks for card details.
Pricing
Paid plans start around $53 per month billed annually (about $80 month-to-month) after a free trial. The AuditZap vs WooRank comparison has the full matrix.
Best for
Marketers who want a readable, presentation-friendly review rather than a technical export.
Visit WooRank

Keep going with AuditZap

Run the free tools below on your own site, read the head-to-head comparisons, then start with the pillar guide.

Read the pillar guide: The complete website audit checklist

Frequently asked questions

What is the best free website audit tool?

It depends on the job. For a prioritised, plain-English fix list with no signup on the individual tools, AuditZap is a strong pick, and you can start with the free broken link checker or meta description checker. For pure performance and Core Web Vitals, Google Lighthouse is the reference tool. For an unlimited technical crawl you control, Screaming Frog is hard to beat.

Are free website audit tools actually free, or is it a trial?

It varies, which is why this guide flags each one. Google Lighthouse is fully free forever. AuditZap has a genuine free plan and no-signup tools. Others, like WooRank or a full Semrush audit, are really a free sample that leads to a paid trial or subscription. Always check whether the "free" report asks for card details before it finishes.

Can I audit my site without signing up?

Yes. Google Lighthouse and the single-page AuditZap tools run with no account. For example, you can run the alt text checker or title tag checker and get results without an email. A full multi-page audit with saved history does require a free account.

How many pages does a free audit crawl?

This is where free tiers differ most. A free AuditZap account audit crawls up to 10 pages, and Pro extends that to 50. Screaming Frog crawls up to 500 URLs for free but as a desktop install. Many web-based free tiers only score the single URL you enter, so read our website audit checklist to plan what a real site-wide audit should cover.

Do any free tools include fix instructions, not just problems?

Most free audits tell you what is wrong and leave the fix to you. AuditZap writes one AI fix instruction on every free audit, for your highest-impact issue (and a fix for every issue on Pro), tailored to your CMS. That is the main reason to pick an audit tool over a raw crawler if you are not a developer.

See where your site stands

Run all 40 checks free, with the 9 critical issues in full detail and one AI fix instruction on the house.

Run a free audit