10 Best Free Screaming Frog Alternatives in 2026

What is a free Screaming Frog alternative?

A free Screaming Frog alternative is any no-cost tool that replaces part of what the SEO Spider does: crawling a site to find broken links, redirects, metadata problems and indexing issues. Some are full crawlers. Others only cover one of those jobs.

That split matters when you choose. Screaming Frog is a site crawler, which means it starts at one URL and follows every link it finds, reporting on each page. Google Search Console is not a crawler in that sense, because it reports on what Google has already found. You will usually want one of each.

Why look for a Screaming Frog alternative?

People look for an alternative mainly because of the 500-URL limit and the features held back in the free version. According to Screaming Frog, a licence costs £199 a year per user, or $279 a year on its pricing page.

The free version also restricts more than URL count:

• No saved crawls. You cannot reopen a crawl later.
• Limited configuration. Crawl settings are restricted.
• No JavaScript rendering. That matters for sites built with client-side frameworks.
• No custom extraction. You cannot pull custom data from pages.
• No API integrations. You cannot connect Search Console or analytics data.

That is still a good deal if you use it often. For a technical SEO working on large sites every week, the paid licence pays for itself quickly. The alternatives below make more sense for smaller sites and occasional audits.

How do the best free Screaming Frog alternatives compare?

Ahrefs Webmaster Tools offers the most generous hosted limit, while SiteOne Crawler and LibreCrawl offer the most freedom. "Any site" means the tool can crawl sites you do not own.

1. Ahrefs Webmaster Tools: best for your own sites

Ahrefs Webmaster Tools is the best free Screaming Frog alternative if you only need to audit sites you own. Now branded Ahrefs Free, it gives you Site Audit with 5,000 crawl credits per project each month, charged only on 200 HTML pages, and it flags more than 170 issue types.

You can add unlimited verified sites, and it also shows your top 1,000 backlinks and keywords in Site Explorer. It runs in the cloud, so nothing ties up your laptop.

The catch is verification. You cannot use it on a competitor or a prospect's site, and that needs a paid plan or a crawler from this list. If you are weighing the paid version, see the best Ahrefs alternatives.

2. SiteOne Crawler: best free desktop crawler

SiteOne Crawler is the best free desktop crawler for anyone who wants an install-and-run replacement. It is MIT-licensed, runs as a desktop app and a CLI on Linux, macOS and Windows, and lists no crawl cap.

It renders JavaScript through headless Chromium, and it produces an audit report, an offline clone of the site and Markdown exports. It was last released as v2.5.1 in June 2026, so it is actively maintained.

It takes a little exploring, because its feature set differs from Screaming Frog's and its reports look nothing alike.

3. LibreCrawl: best for large self-hosted crawls

LibreCrawl is the best option if you want to crawl very large sites at no cost and are comfortable self-hosting. This open-source project is MIT-licensed and claims crawl depth up to 5 million URLs, with optional JavaScript rendering through Playwright.

You run it through Docker or Python on Windows, Linux or Mac. Local mode has no limits, while the standard mode limits guests to 3 crawls in 24 hours. Commits were still landing on November 1, 2026.

There is no polished desktop app, and some settings live in your browser, so it suits technical users.

4. SEOnaut: best for prioritized issues

SEOnaut is the best choice if you want a list of problems ranked by severity, rather than a raw data export. This open-source crawler covers broken links, redirects, metadata and headings.

Self-hosting is free under the MIT licence and needs Docker and MySQL. If you would rather not run it yourself, hosted plans include a Lite tier with 1 project and 500 URLs, and Growth costs $9 a month.

It has no formal releases, so expect to follow the repository for updates. Its most recent commits date from October 2026.

5. Google Search Console: best for Google's own data

Google Search Console is the essential free companion to any crawler, because it is the only tool here showing how Google itself treats your pages. Its URL Inspection tool shows the indexed version of a page and runs a live test.

The Page indexing report explains which pages are excluded and why, and the Core Web Vitals report groups real-user performance data. Expect some limits: exports stop at 1,000 rows, and Google says indexing examples are not guaranteed to be complete.

It will not crawl your site on demand or extract on-page data. Treat it as the source of truth on indexing, and use a crawler to find the causes.

6. Bing Webmaster Tools: best for Bing and AI citation data

Bing Webmaster Tools is the most underrated tool on this list. Its Site Scan crawls verified sites and reports SEO issues, and its URL Inspection tool shows indexed and live versions of a page.

Its newest feature may be the biggest reason to sign up. AI Performance, launched in public preview in February 2026, shows citations across Copilot and Bing's AI summaries. Few free tools offer first-party AI citation data.

It also supports IndexNow, a free protocol for telling search engines about changed URLs. Site Scan's monthly quota is set by Bing, with no published number, so test it on your own site.

7. PageSpeed Insights and Lighthouse: best for performance

PageSpeed Insights is the best free tool for checking one page's speed, because it combines lab data with real-user data. Google's documentation explains that it runs Lighthouse for lab results and uses Chrome UX Report data from the past 28 days for field results.

It tests one URL at a time, so use it on your key templates and leave crawling to something else. Lighthouse, its open-source engine, runs in Chrome DevTools or from the command line, where you can pass a list of URLs.

Neither tool follows links. Pair them with a crawler that finds the pages worth testing.

8. WebSite Auditor: best 500-URL match

WebSite Auditor is the closest like-for-like match to Screaming Frog's free version. This desktop tool from SEO PowerSuite runs on Windows, macOS and Linux, and it crawls any site, with a free limit of 500 URLs and 1 project.

Like Screaming Frog, the free version blocks saving, and export needs the Professional licence at $349 a year. It adds bulk Core Web Vitals data through PageSpeed Insights.

Choose it if you want a second opinion at the same scale.

9. Semrush Site Audit: best for a quick small audit

Semrush's free Site Audit is a good choice for a fast, readable audit of a small site. Its help pages set a limit of 100 pages a month without the SEO Toolkit, with no rollover.

You also get 1 demo project and 10 reports a day. We cover the rest in Is Semrush free?

A hundred pages will not cover most business sites, so use it for your most important templates.

10. Seobility: best for simple site checks

Seobility is a good pick for site owners who want a simple hosted checkup. Its free Basic plan includes 1 project, 100 pages per crawl and 10 tracked keywords, along with an SEO checker for single pages at 5 checks a day.

It explains issues in plain language, which suits people who do not want raw crawl data. Larger sites will need a paid plan, which starts at €59.90 a month.

Which free SEO crawlers should you skip?

You should skip tools that are unmaintained, or that are no longer free. Several appear on older lists:

• Sitebulb has no free version, only a 14-day trial. It is a strong paid option.
• Greenflare has had no commits since July 2023, and its website is an empty placeholder.
• Xenu's Link Sleuth lists a 2010 release, runs on Windows and ignores robots.txt.
• Netpeak Spider now lists a 3-day trial, so an older free tier may be gone.

How do you replace Screaming Frog for free?

You replace Screaming Frog for free by combining a crawler with Google's and Bing's own data, since no single free tool does it all. This stack covers most sites:

1. Crawl with one tool. Use Ahrefs Webmaster Tools for your sites, or SiteOne Crawler for any site.
2. Check indexing in Search Console. Compare what you found with what Google reports.
3. Add Bing Webmaster Tools. It costs nothing, and it brings AI citation data.
4. Test key templates in PageSpeed Insights. Check the homepage, a product page and a blog post.
5. Validate structured data. Use Google's Rich Results Test and the Schema Markup Validator.
6. Check AI access. Review your robots.txt for AI crawlers, and use our free SEO tools for Open Graph and llms.txt checks.

What mistakes should you avoid with free SEO crawlers?

The biggest mistake is trusting a crawl that did not finish. A tool that stops at its limit can make a site look healthier than it is, because the broken pages may sit beyond the cutoff.

• Crawling too fast. Aggressive settings can slow a live site, so lower the speed on smaller servers.
• Skipping JavaScript rendering. A crawl without it can miss links on client-rendered sites.
• Fixing every warning. Prioritize issues that affect indexing and important pages.
• Forgetting about robots.txt. A tool that ignores it can hit pages you meant to protect.
• Picking unmaintained software. Older crawlers miss current web standards, so check the last update.

What should you do after a technical audit?

After a technical audit, you should turn to authority, because a clean site still needs other sites linking to it. Technical fixes remove obstacles, and links give Google a reason to trust your pages.

Our guide on how many backlinks you need to rank shows how to set a target for a keyword. If you do not have time for that outreach, Seowly runs it for you, sending from your own inbox for $39 a month across up to 5 brands. See what sustained outreach built in our Love Tales case study.

The bottom line on free Screaming Frog alternatives

Most site owners can replace Screaming Frog's free version with Ahrefs Webmaster Tools plus Search Console and Bing Webmaster Tools. Choose SiteOne Crawler or LibreCrawl if you need to crawl sites you do not own or go past 500 URLs. If you run technical audits every week, the £199 licence is still fair value, so test the free options first and upgrade only when you hit a real limit.