# Essel > Essel (essel.ai) is an autonomous AI content engine for SEO and GEO. It runs the full loop without a writer in the seat: keyword and SERP research, on-brand drafting in your trained brand voice, internal-link planning, image generation, quality and plagiarism review, then scheduled publishing on a cadence to WordPress, Webflow, Shopify, and headless CMSs — and automatic submission to search engines for indexing. Every draft is optimized for both classic Google ranking and AI answer engines (AI Overviews, ChatGPT, Perplexity, and other GEO/AEO surfaces) so the content stays citable. Essel offers free and paid plans, plus a suite of free SEO tools that need no account. ## Core pages - [Essel — AI content engine for SEO blogs](https://essel.ai/): Autonomous AI that drafts SEO-ready, on-brand articles and keeps your blog publishing on a cadence. - [Pricing](https://essel.ai/pricing): Plans and pricing for the Essel content engine. - [Free SEO Score Audit](https://essel.ai/seo-score): Audit any URL and get an instant, actionable SEO score. - [Free AI Blog Writer](https://essel.ai/blog-writer): Type a topic and get a real, finished article with a cover image in about a minute. No sign-up to start. - [Technical SEO Audit — $10, 100 Pages](https://essel.ai/technical-seo-audit): Agency-grade technical SEO audit for $10 flat: 100 pages crawled, 71 checks, a pasteable fix for every finding, results in minutes. - [SEO Audit Service — Full 100-Page Audit for $10](https://essel.ai/seo-audit-services): Everything an SEO audit service delivers — findings, priorities, rewritten metas, an internal-link plan — from a real 100-page crawl, for $10 flat. - [SEO Audit Cost — Agency Prices vs a $10 Audit](https://essel.ai/seo-audit-cost): What SEO audits cost in 2026: agency, freelancer, and retainer ranges side by side with Essel's $10 flat whole-site audit. - [AI Visibility Checker — Can AI See Your Site?](https://essel.ai/ai-visibility-checker): Check AI-crawler access, answer-ready structure, AI Overview citations, and how AI models describe your brand — with a fix for every gap. - [GEO Audit — Score Your Site for Generative Engines](https://essel.ai/geo-audit): Deterministic GEO and AEO audit: passage citability, answer structure, citable evidence, and AI-crawler access, scored per page and site-wide. - [Free SEO Tools](https://essel.ai/tools): A suite of free, browser-based SEO and content utilities. - [Essel Alternatives & Comparisons](https://essel.ai/alternatives): How Essel compares to other content and SEO tools. - [Head-to-Head Tool Comparisons](https://essel.ai/compare): Neutral comparisons between other SEO and AI content tools, with dated facts. - [Blog](https://essel.ai/blog): Articles on SEO, content strategy, and AI publishing — written with Essel. - [API Documentation](https://essel.ai/docs): Reference for the Essel public API and integrations. ## Free SEO tools - [Markdown to HTML](https://essel.ai/tools/markdown-to-html): Turn Markdown into clean, semantic HTML in real time. - [HTML to Markdown](https://essel.ai/tools/html-to-markdown): Convert messy HTML into clean, portable Markdown. - [Schema Markup Generator](https://essel.ai/tools/schema-markup-generator): Generate valid JSON-LD structured data for rich results. - [llms.txt Generator](https://essel.ai/tools/llms-txt-generator): Build an llms.txt so AI answer engines read your site correctly. - [Robots.txt Generator](https://essel.ai/tools/robots-txt-generator): Create a correct robots.txt with the right crawl rules. - [AI Alt Text Generator](https://essel.ai/tools/alt-text-generator): Upload an image, get descriptive SEO-ready alt text. - [Slug Generator](https://essel.ai/tools/slug-generator): Turn any title into a clean, URL-safe slug. - [Meta Description Generator](https://essel.ai/tools/meta-description-generator): Write meta titles and descriptions that fit and earn the click. - [Readability Checker](https://essel.ai/tools/readability-checker): Score readability with Flesch and grade-level metrics. - [Keyword Density Checker](https://essel.ai/tools/keyword-density-checker): See which terms and phrases dominate your content. - [Sentence Counter](https://essel.ai/tools/sentence-counter): Count sentences, words, and paragraphs with reading time. - [H1 & Heading Checker](https://essel.ai/tools/heading-structure-analyzer): Check your H1 and audit the full H1–H6 outline. - [Open Graph Checker](https://essel.ai/tools/open-graph-preview): Check any URL's link card and generate Open Graph tags. - [Anchor Text Generator](https://essel.ai/tools/anchor-text-suggester): Generate natural, varied anchor text for internal links. ## Comparisons - [Surfer SEO Alternative](https://essel.ai/alternatives/surfer-seo): Surfer SEO is a content optimization platform built around SERP analysis and a real-time on-page score. In 2026 it added an AI writer (Surfy) and an AI Visibility tracker for ChatGPT and Google AI Overviews. It's popular with SEO specialists who want hands-on, data-driven editing. - [Jasper AI Alternative](https://essel.ai/alternatives/jasper): Jasper is an AI writing platform for marketing teams, with templates, brand voice training, and a 2026 GEO Agent for AI-search visibility. It spans many content formats but isn't built around SEO research or publishing. - [Frase Alternative](https://essel.ai/alternatives/frase): Frase is a content intelligence platform that combines SERP research, AI content briefs, and AI writing. In 2026 it added an AI Agent that drafts and auto-publishes on higher tiers, plus AI Visibility tracking. It's strong for research-led teams. - [MarketMuse Alternative](https://essel.ai/alternatives/marketmuse): MarketMuse is a content strategy platform focused on topical authority mapping, content inventories, and SEO prioritization. It plans and briefs rather than writes or publishes, and is aimed at larger content teams. - [Scalenut Alternative](https://essel.ai/alternatives/scalenut): Scalenut is an AI SEO and GEO content platform with keyword clustering, long-form AI writing, and a semi-automated 'Cruise Mode' drafter. It publishes to WordPress and Shopify and targets small content teams. - [Outranking.io Alternative](https://essel.ai/alternatives/outranking): Outranking.io is an AI SEO writing platform built around SERP-driven briefs, AI first drafts, and on-page optimization. It aims to help teams produce content that outranks competitors, with a human-in-the-loop workflow. ## Head-to-head comparisons - [Frase vs Surfer SEO](https://essel.ai/compare/frase-vs-surfer-seo): Frase vs Surfer SEO compared on research, optimization, autonomy, publishing, and price. Which fits briefs-first teams, and which fits hands-on editors. - [Jasper vs Copy.ai](https://essel.ai/compare/jasper-vs-copy-ai): Jasper vs Copy.ai in 2026: Jasper stayed a marketing writing platform while Copy.ai became a GTM workflow platform. Pricing, positioning, and which to pick. ## API documentation - [Docs — Authentication](https://essel.ai/docs/authentication) - [Docs — Best Practices](https://essel.ai/docs/best-practices) - [Docs — List Blogs](https://essel.ai/docs/blogs/list) - [Docs — Get a Blog](https://essel.ai/docs/blogs/get) - [Docs — Report AI Crawler Hits](https://essel.ai/docs/crawler-hits) - [Docs — GEO Optimization](https://essel.ai/docs/geo) - [Docs — Errors](https://essel.ai/docs/errors) - [Docs — Connect WordPress](https://essel.ai/docs/integrations/wordpress) - [Docs — Connect Webflow](https://essel.ai/docs/integrations/webflow) - [Docs — Connect Shopify](https://essel.ai/docs/integrations/shopify) - [Docs — Custom Domains](https://essel.ai/docs/integrations/custom-domains) ## Legal - [Privacy Policy](https://essel.ai/privacy): How Essel collects, uses, and protects your data. - [Terms of Service](https://essel.ai/terms): The terms that govern your use of Essel. - [Security](https://essel.ai/security): How Essel safeguards your content and credentials.