Horseman

Horseman is a desktop web crawler built around snippets: small pieces of JavaScript that run on every page it visits and return data. Anything a developer could do in the Chrome DevTools console can be automated across an entire site, with results collected into a single table and an Insights view for drilling into pages with issues. It suits technical SEO specialists, frontend and JavaScript developers, performance analysts, accessibility auditors and agencies. More than 120 built in snippets cover checks such as Largest Contentful Paint image priority, overflowing elements, H1 sentiment and content extraction with Mozilla's readability library. Version 0.3 added GPT integration, so a crawl can send selected page data or whole pages to a prompt, for example to summarise content and draft new meta descriptions, and an AI helper that writes snippets from a plain language description for users who do not know JavaScript. It runs on Windows, macOS on Intel and Apple silicon, and Linux. Access is sold as early bird pricing through GitHub Sponsors rather than a conventional checkout. The Sponsor tier is $5 per month for one device, Sponsor++ is $10 per month for three devices, and Sponsor+++ offers a custom device limit by arrangement with the developer. Sponsors log in with GitHub to download the app. Horseman is a one person project by developer Chris Johnson. The site still announces version 0.3.2 and carries a 2023 copyright, so buyers should confirm the tool is still maintained before relying on it.