Checkbot vs Lighthouse

Checkbot is a Chrome extension for auditing websites for SEO, speed, and security issues. Its checks can flag broken links, duplicate content, invalid HTML, and insecure forms. The crawler can examine hundreds of pages in minutes, while site structure information shows linked pages, image, JavaScript and CSS files, non-indexable pages, and redirects. It can also reach staging and local development sites, password-protected pages, and private networks. Crawling and other functions run locally on the user's machine; Checkbot says it does not operate as a web service. The free Basic plan allows 100 URLs per crawl, unlimited crawls and sites, with ads. Professional costs $10 a year, billed $120 per year, or $15 a month; it raises the crawl limit to 10,000 URLs and adds localhost crawling, PDF reports, CSV and bulk export, and HTTP Auth support. The extension runs on Windows, macOS, Chrome OS, and Linux, but does not execute JavaScript during crawls. Usage analytics and crash reports are opt-in.

Lighthouse is an open-source automated tool for auditing web page quality. Given a URL, it runs audits covering performance, accessibility, best practices, SEO, and other areas, then produces a report with results and references on the audits and how to address failures. It is aimed at web developers seeking relevant, actionable guidance. Lighthouse runs in Chrome DevTools, from the command line, as a Node module, or through a web interface without installation. DevTools can audit pages requiring authentication; the Chrome extension cannot audit authenticated pages or local sites. Reports can be produced as JSON or HTML, and the command-line tool also supports CSV. Stack packs add platform-specific recommendations, while plugins allow domain experts to contribute audits and report categories. Lighthouse can be integrated into continuous integration, and Lighthouse CI can help prevent regressions. Reports can be viewed online or shared with Lighthouse Viewer using report JSON. The CLI and Node workflows require Google Chrome, and the repository specifies Node 22 (LTS) or later. Its first CLI run asks about anonymous runtime exception reporting; opting out does not affect use.