Siteliner

Siteliner is the free website analyzer focused specifically on identifying duplicate content, broken links, and SEO issues across websites, launched by Indigo Stream Technologies (creators of Copyscape) in 2009. The pitch is direct: while comprehensive SEO platforms (Ahrefs, SEMrush, Moz at $99-$249+/month) cover broad SEO needs, Siteliner provides focused free analysis of duplicate content + broken links + page metadata across an entire website in one scan. For SEO professionals + content marketers + agencies needing quick site-wide duplicate content + broken link audits, Siteliner is the canonical free tool — used for over 15 years as standard pre-redesign audit + ongoing site health monitoring. What makes Siteliner distinctive is the focused scope + free pricing + comprehensive site-wide scanning + Copyscape integration. Most SEO tools provide duplicate content checking as one feature among many. Siteliner specializes — comprehensive site-wide scan identifying internal duplicate content (pages with similar content to other pages on your site) which is a common SEO issue + harder to detect than external duplicate content. The Copyscape integration extends to external duplicate detection (someone copying your content). Combined with broken links + page sizes + load time analysis, Siteliner provides focused site health audit at $0. The core feature set: • **Site-wide duplicate content scan** — identify pages with similar content to other internal pages • **Broken link detection** — find all broken internal + external links across site • **Page metadata analysis** — title, description, headings analysis • **Common content detection** — boilerplate content appearing on multiple pages (footers, headers) • **Site speed analysis** — basic page size + load time data • **Sitemap generation** — generate XML sitemaps from scan results • **Copyscape integration** — extend scan to external duplicate content detection • **Free up to 250 pages** — generous free tier covering most small-to-medium sites • **Premium scanning** — paid scans for larger sites (1000s of pages) via Copyscape • **Visual report** — charts + visualizations of site issues • **Detailed page-level reports** — drill into specific page issues • **Cross-reference duplicates** — see which pages share content with which other pages • **No registration required** — enter URL + scan, no account needed • **Export reports** — CSV + PDF report exports • **Crawler respect** — respects robots.txt + rate limits to avoid impacting servers • **Indexed pages tracking** — track which pages get indexed by search engines For SEO professionals + content marketers + agencies + site owners the use cases: • **Pre-redesign site audit** — comprehensive scan before major site changes • **Duplicate content detection** — find internal duplicates harming SEO performance • **Broken link cleanup** — systematic broken link identification + fixing • **Content consolidation planning** — identify pages with overlapping content for merging • **SEO onboarding** — agencies onboarding new clients with site health audit • **Periodic site health monitoring** — quarterly scans for content drift detection • **Pre-launch site verification** — final check before launching new site • **Cost-conscious SEO audits** — vs premium SEO platforms' duplicate content features • **Sitemap generation** — XML sitemap for SEO submission • **Content marketing audits** — identify thin or duplicate content for content strategy The pricing is freemium with Copyscape integration. Free tier covers scans up to 250 pages per site (sufficient for most small-medium sites). Paid scans via Copyscape integration for larger sites — pricing scales with page count (typically $0.20-$0.40 per page for one-time scans). Compared to Ahrefs Site Audit (included with $129+/month subscription), SEMrush Site Audit (included with $139+/month), Screaming Frog (free desktop tool, paid $209/year for >500 URLs), Siteliner's $0 free tier + focused scope is uniquely valuable for occasional audits. Where Siteliner wins clearly: completely free for sites under 250 pages — covers most small-medium sites without subscription; focused scope (duplicate content + broken links) does specific things well vs broader tools spreading attention; Copyscape integration extends to external duplicate detection (unique combination); no registration required + fast scanning eliminates friction; for occasional site audits + pre-launch verification + content consolidation work, Siteliner is the canonical free tool. Where it loses: limited to 250 pages free vs comprehensive site audit tools handling larger sites; less comprehensive than Ahrefs/SEMrush site audits (no Core Web Vitals, no mobile-friendliness, no advanced technical SEO); for ongoing SEO work, premium tools' broader features justify subscription; UI feels dated vs modern SEO tools; for sites needing daily/weekly monitoring, dedicated monitoring tools (DeepCrawl, Sitebulb) more appropriate. My take: for content marketers + SEO professionals + agencies + site owners needing occasional duplicate content + broken link audits — Siteliner is genuinely valuable at $0 and the 15+ year track record + focused tooling earn continued recommendation. For comprehensive ongoing SEO work, Ahrefs or SEMrush subscriptions justify cost. For one-off site audits + pre-redesign checks + content consolidation planning, Siteliner covers the specific use case better than any paid alternative. Combined with free Google Search Console (canonical free SEO tool) + Google PageSpeed Insights, Siteliner forms part of the free SEO toolkit covering substantial use cases at $0. Worth bookmarking for SEO audit needs even if you also subscribe to premium tools.