The best free alternative to Screaming Frog SEO Spider is SiteOne Crawler, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Screaming Frog SEO Spider and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Screaming Frog SEO Spider are Google Lighthouse, ahrefs, SEO PowerSuite and PageSpeed Insights.
A free in-depth website analyzer providing audits of security, performance, SEO, accessibility and other technical aspects. Available as a desktop application for Windows/macOS/Linux and as a CLI tool for advanced users and CI/CD processes. It also includes an offline web page exporter.
Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.
Ahrefs is a complete SEO toolset offering functionalities such as keyword research, link building, and website analysis. It provides free tools to improve SEO performance for both beginners and experts.
Features four integrated cross-platform desktop tools for keyword research and ranking, on-page site audits, backlink analysis, and link building. Offers automated SEO checks, multi-language support, custom reports, and competitor analysis for improved website optimization.
PageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved.
Pulno is a website audit tool which checks for SEO related issues and sends comprehensible tips to improve on-page SEO with page speed optimizer (CSS and image file optimization), meta tags and unique text analyzer.
Xenus Link Sleuth checks Web sites for broken links. Link verification is done on "normal" links, images, frames, plug-ins, backgrounds, local image maps, style sheets, scripts and java applets.
GTmetrix is a free tool that analyzes your page's speed performance. Using Page Speed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
Automated SEO platform providing comprehensive site auditing, on-page and technical optimization checks, keyword rank and SERP tracking, backlink profile analysis, competitor benchmarking, duplicate content detection, and actionable recommendations for all site sizes.
Discover broken links, uncover missing page titles, duplicate content and identify other problems with our SEO crawler software.
Sitechecker is a website SEO audit tool with detailed SEO reports. Sitechecker enables users to conduct a comprehensive website audit and record technical mistakes for the whole domain and specific URLs.
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SEO powersuit give more data than Screaming Frog SEO Spider