# Rext AI — Comprehensive Documentation & Overview > Rext AI is an AI article writer for SEO, made for site owners and agencies. You approve the outline; it writes in your brand voice with linked sources and publishes to WordPress. --- ## 1. Product Overview You pick a keyword and approve the outline. Rext AI researches the topic on the web, writes the article in your brand voice with linked sources, scores it for On-Page SEO and Trust, and publishes it to WordPress. ### What it does - **You decide before it writes**: the keyword, the format, the title and the outline are yours to choose and approve. - **Linked sources**: the article links the pages its facts come from. - **Two scores with their checklists**: On-Page SEO and Trust, each showing what it checked. - **WordPress Publishing**: Publish, save as a draft or send for review on a WordPress site through the Rext AI plugin, now or on a schedule. --- ## 2. Core Features & Capabilities ### Keyword research ([https://rext.ai/features/keyword-research](https://rext.ai/features/keyword-research)) Volume, difficulty and search intent for a keyword before anything is written, saved to your library. ### Keyword library ([https://rext.ai/features/keyword-library](https://rext.ai/features/keyword-library)) Every keyword you analyze is saved in Keywords with its data, so your next article starts from the list. ### Article writer ([https://rext.ai/features/article-writer](https://rext.ai/features/article-writer)) From a keyword to a finished draft in your author's voice, with the outline yours to approve. ### Internal links ([https://rext.ai/features/internal-links](https://rext.ai/features/internal-links)) The outline suggests internal links to your own articles, ranked by how closely each one matches the topic. ### E-E-A-T ([https://rext.ai/features/eeat-optimization](https://rext.ai/features/eeat-optimization)) A named author, linked sources, and a trust score from 0 to 100% on every article. ### On-page SEO ([https://rext.ai/features/on-page-seo](https://rext.ai/features/on-page-seo)) An on-page score from 0 to 100 and the Checklist behind it, on every article. ### Brand voice ([https://rext.ai/brand-voice](https://rext.ai/brand-voice)) Your brand read from your website when you create a workspace, yours to edit. ### Personas ([https://rext.ai/features/personas](https://rext.ai/features/personas)) Pick a persona for an article: it's written as them and credited to their WordPress user, if there is one. ### Content calendar ([https://rext.ai/features/content-calendar](https://rext.ai/features/content-calendar)) Calendar shows each published and scheduled post by month, and you schedule in your own time zone. --- ## 3. Free Web-Based SEO Utilities Rext AI provides 21 free browser-based tools for marketers and developers: 1. **Content outline generator** ([https://rext.ai/tools/content-outline-generator](https://rext.ai/tools/content-outline-generator)): Give Rext AI a topic and get a fully structured outline back in seconds with headings, subheadings, and notes on what to say under each one. 2. **Hreflang tag generator** ([https://rext.ai/tools/hreflang-tag-generator](https://rext.ai/tools/hreflang-tag-generator)): Free hreflang tag generator powered by Rext AI lets you build accurate, ready-to-use hreflang tags online in just a few seconds. 3. **Canonical tag generator** ([https://rext.ai/tools/canonical-tag-generator](https://rext.ai/tools/canonical-tag-generator)): Try Rext AI's free canonical tag generator that provides you with accurate and ready-to-use canonical tags in seconds, without coding 4. **Topic generator** ([https://rext.ai/tools/topic-generator](https://rext.ai/tools/topic-generator)): Enter one keyword in the Rext AI topic generator and get up to 20 blog post titles around it, each within the word range you set. Free, instant, no account needed. 5. **Keyword density checker** ([https://rext.ai/tools/keyword-density-checker](https://rext.ai/tools/keyword-density-checker)): Keyword Density Checker powered by Rext AI lets you find out exactly how often your keywords show up and whether that's helping your SEO or not. 6. **SERP preview tool** ([https://rext.ai/tools/serp-preview-tool](https://rext.ai/tools/serp-preview-tool)): Write your title and description in free SERP preview tool, then generate a preview of the search result. You'll know whether Google cuts your headline off mid-sentence long before a single visitor does. 7. **Meta description generator** ([https://rext.ai/tools/meta-description-generator](https://rext.ai/tools/meta-description-generator)): Rext AI's meta description generator writes one from your page title and keywords in seconds. 8. **Readability checker** ([https://rext.ai/tools/readability-checker](https://rext.ai/tools/readability-checker)): Paste your content and get your Flesch Reading Ease and grade level score in seconds, free with the Rext AI readability checker. 9. **XML sitemap generator** ([https://rext.ai/tools/xml-sitemap-generator](https://rext.ai/tools/xml-sitemap-generator)): Paste your URLs; get a valid XML sitemap with Rext AI. No crawler to wait on, no page-count limit, nothing to install. Copy it, save it as sitemap.xml, and submit it to Search Console. 10. **Title tag generator** ([https://rext.ai/tools/title-tag-generator](https://rext.ai/tools/title-tag-generator)): Give a keyword and brand tone to Rext AI’s Title Tag Generator, and get a set of title tags written to fit Google's display limit that help attract users. 11. **Hook generator** ([https://rext.ai/tools/hook-generator](https://rext.ai/tools/hook-generator)): Describe what you're writing about and what you want it to do, and get back a set of attractive opening lines built to earn the next sentence with the Rext AI Hook Generator. 12. **Headline analyzer** ([https://rext.ai/tools/headline-analyzer](https://rext.ai/tools/headline-analyzer)): The headline is the most important part of your content because it decides whether the rest of your writing gets attention or not. The Rext AI headline analyzer scores it before you publish, not after. 13. **Robots.txt generator** ([https://rext.ai/tools/robotstxt-generator](https://rext.ai/tools/robotstxt-generator)): One wrong line in a robots.txt file can hide your entire site from Google. Rext AI's free robots.txt generator builds the file for you. 14. **Paragraph rewriter** ([https://rext.ai/tools/paragraph-rewriter](https://rext.ai/tools/paragraph-rewriter)): Paste a paragraph that seems vague, and the Rext AI paragraph rewriter provides you back a clearer version with the same meaning and better flow. 15. **Grammar checker** ([https://rext.ai/tools/grammar-checker](https://rext.ai/tools/grammar-checker)): Paste your text in Rext AI grammar checker and see exactly where the grammar breaks down, with a corrected version sitting right next to your original. Catch the mistakes before your reader does. 16. **Question generator** ([https://rext.ai/tools/question-generator](https://rext.ai/tools/question-generator)): Paste your content in Question Generator by Rext AI and get back the questions a reader would have after finishing it. Use them to build an FAQ section, find the gaps in your draft, or write the follow-up piece. Free, and no account needed. 17. **Word counter** ([https://rext.ai/tools/word-counter](https://rext.ai/tools/word-counter)): Paste your text and every number updates as you type: words, characters, sentences, paragraphs, and how long the piece takes to read. Nothing to click, nothing to upload. 18. **Schema markup generator** ([https://rext.ai/tools/schema-markup-generator](https://rext.ai/tools/schema-markup-generator)): Give Google exactly what it needs to understand your page without touching a line of code yourself, just by using Rext AI Schema Markup Generator. 19. **Content idea generator** ([https://rext.ai/tools/content-idea-generator](https://rext.ai/tools/content-idea-generator)): Tell Rext AI content idea generator what you're writing about and what format you're writing for, and you'll get a list of specific, usable content ideas in a few seconds instead of a few hours. 20. **Get metrics** ([https://rext.ai/tools/get-metrics](https://rext.ai/tools/get-metrics)): Paste your text into the free content metrics tool by Rext AI and see the word count, characters, sentences, paragraphs, and reading time. 21. **Free broken link checker** ([https://rext.ai/tools/broken-link-checker](https://rext.ai/tools/broken-link-checker)): Paste a URL, and Rext AI's free link checker tells you whether it's working. Find dead links before your readers do. --- ## 4. Integrations - **WordPress (live)**: The Rext AI plugin receives articles as published posts, drafts or posts pending review, now or on a schedule. - **Shopify (coming soon)**: Publishing to a Shopify store's blog is built but not yet available. - **Any other CMS**: Copy an article as HTML, Markdown or plain text and paste it in. - All integrations: [https://rext.ai/integrations](https://rext.ai/integrations) --- ## 5. Blog & Case Studies - [Surfer SEO vs Rext AI: Which One Fits Your Content Workflow?](https://rext.ai/blog/surfer-seo-vs-rext-ai-which-one-fits-your-content-workflow): Need better SEO content? Compare Surfer SEO vs Rext AI for AI writing, content optimization, brand voice, and features that matter. Explore which tool is worth your money. - [How to Choose the Best AI Content Generators for Marketing Teams in 2026:](https://rext.ai/blog/how-to-choose-the-best-ai-content-generators-for-marketing-teams-in-2026): Looking for the best AI content generator for marketing teams? Learn which AI content generators deliver better workflows, SEO optimization, and scalable growth for marketing teams in 2026. - [Top Frase alternatives that can improve your SEO content workflow in 2026](https://rext.ai/blog/top-frase-alternatives-that-can-improve-your-seo-content-workflow-in-2026): Looking for the best Frase alternatives? A complete comparison guide with Rext AI, Surfer SEO, MarketMuse, Clearscope, and more for SEO content creation is here. - [Jasper vs Rext AI: which AI writing tool is worth your investment?](https://rext.ai/blog/jasper-vs-rext-ai-which-ai-writing-platform-is-worth-your-investment): Searching for Jasper AI alternatives? Before investing, compare Jasper vs. Rext AI and discover which tool offers better SEO workflows, features, and value. - [How SEO writing assistants enhance user experience](https://rext.ai/blog/how-seo-writing-assistants-enhance-user-experience): See how SEO writing assistants like Rext AI help you plan, write and check your articles and upgrade your content workflow in 2026. - [Are your pages competing against each other? A guide to keyword cannibalization](https://rext.ai/blog/are-your-pages-competing-against-each-other-a-guide-to-keyword-cannibalization): Are your own pages competing against each other for the same keyword? Learn how to find it in Google Search Console, fix it, and plan new articles with Rext AI so it doesn't happen again. - [How to write a blog post that gets ranked and remembered](https://rext.ai/blog/how-to-write-a-blog-post-that-gets-ranked-and-remembered): Learn how to write a blog post that ranks on Google and keeps readers engaged. Discover practical steps for research, structure, SEO, and publishing. - [8 best Surfer SEO alternatives for content optimization](https://rext.ai/blog/8-best-surfer-seo-alternatives-for-content-optimization): Looking for Surfer SEO alternatives? Compare 8 SEO tools by features, pricing, AI writing, SERP analysis, content optimization, workflows and choose the one that meets your needs. - [An AI content tool that publishes directly to WordPress](https://rext.ai/blog/ai-content-tool-that-publishes-directly-to-your-cms): Tired of fixing On page SEO and re-uploading images? Rext AI publishes formatted, SEO-checked articles to WordPress, now or on a schedule. - [How small businesses use schema markup to win leads](https://rext.ai/blog/how-small-businesses-use-schema-markup-to-win-leads): Learn how schema markup can improve search visibility, rich results and lead quality, and build JSON-LD with Rext AI's free schema markup generator. - [How Rext AI checks on-page SEO, plus free tools for technical SEO](https://rext.ai/blog/how-rext-ai-handles-on-page-and-technical-seo-for-you): See how Rext AI checks on-page SEO on every article, and how its free tools help with schema, sitemaps and robots.txt. - [Rext AI hreflang tag generator creates accurate tags in seconds](https://rext.ai/blog/rext-ai-hreflang-tag-generator-creates-accurate-tags-in-seconds): Rext AI's free hreflang tag generator builds the full set of tags for your language and country versions, with a warning for each invalid code. - [Best AI Article Writer Guide 2026](https://rext.ai/blog/best-ai-article-writer-guide-2026): Explore how to choose the best AI article writer in 2026 with our comprehensive guide for content creators, students, marketers, and authors. - [How to use on-page optimization to target Google featured snippets](https://rext.ai/blog/how-to-use-on-page-optimization-to-target-google-featured-snippets): Want your content to appear in Google Featured Snippets? Discover how on-page optimization can help you rank your page at the top and learn practical strategies to structure content Google can easily understand. - [Best AI SEO tools for small businesses: from keywords to published content](https://rext.ai/blog/best-ai-seo-tools-for-small-businesses-from-keywords-to-published-content): Which AI SEO tool fits your small business? Compare 10 leading platforms by features, pricing, free access, content, and publishing. - [SEO content generation with Rext AI for smarter content](https://rext.ai/blog/seo-content-generation-with-rext-ai-for-smarter-content): Learn how to build a smarter SEO content workflow with Rext AI that combines search intent, keyword clustering, and E-E-A-T principles to write articles from an outline you approve. - [AI writing tools](https://rext.ai/blog/category/ai-writing-tools): Every Rext AI article on AI writing tools, newest first. - [On-page and technical SEO](https://rext.ai/blog/category/on-page-and-technical-seo): Every Rext AI article on on-page and technical SEO, newest first. - [Writing and publishing](https://rext.ai/blog/category/writing-and-publishing): Every Rext AI article on writing and publishing, newest first. - [Comparison](https://rext.ai/blog/category/comparison): Every Rext AI article on comparison, newest first. - [How WPGrit increased SEO-driven leads by 138% in 90 days](https://rext.ai/case-studies/how-wp-grit-increased-seo-driven-leads-by-138-in-90-days) --- ## 6. Contact & Support - Website: [https://rext.ai](https://rext.ai) - Help Center: [https://rext.ai/help](https://rext.ai/help) - Contact: [https://rext.ai/contact](https://rext.ai/contact) - Pricing: [https://rext.ai/pricing](https://rext.ai/pricing)