RankVN SEO

Description

Technical SEO for WordPress with strong Vietnamese-language support — accent-aware processing, Vietnamese keyword analysis, and a bundled Vietnamese translation.

Built for the AI search era (llms.txt + unified Schema Graph)

RankVN SEO helps AI search engines and large language models understand your content. It generates an llms.txt file to guide AI crawlers, outputs a unified JSON-LD Schema Graph that links WebSite, WebPage, Article, Author, and BreadcrumbList in one connected block, and lets you add an optional AI content disclosure so readers know when a post was written with AI assistance. All processed locally — no tracking and no external calls without your consent.

RankVN SEO is a lightweight, fast, and feature-rich search engine optimization plugin built for WordPress sites. It provides all standard, non-AI SEO capabilities in the Free Core tier to ensure competitive parity and performance.

Key features include:
* Meta Title & Description: Easily customizes Google search snippets for posts, pages, and homepages.
* Open Graph & Twitter Cards: Enriches social media previews with secure image sizing, section mapping, and author references.
* Unified Schema Graph: Outputs a single, connected JSON-LD block linking WebSite, WebPage, Article, Author, and Breadcrumb List.
* XML & HTML Sitemap: Automatically generates search engine-friendly XML sitemaps and customizable HTML sitemaps.
* Robots.txt & Robots Meta: Edits virtual robots.txt files and configures noindex, nofollow, or noarchive tags per page.
* Canonical URL: Prevents duplicate content issues with customizable canonical tags.
* Table of Contents: Inserts automated, responsive heading-based tables of contents via shortcode.
* Reader Rating Widget: Allows visitors to rate posts, automatically generating valid AggregateRating schema.
* Image Alt Text Guard: Scans your Media Library for missing alt attributes and applies suggestions in bulk.
* Media Health Check: Scans and reports potential orphan media files, oversized images, and broken links.

RankVN SEO Free is lightweight, privacy-focused, and executes zero remote scripting or telemetry tracking without consent.

External Services

This plugin can connect to the following third-party services. All of them are OPT-IN — nothing is contacted until you explicitly enable/configure it in the plugin settings.

IndexNow

Used to notify search engines (Bing, Yandex, and others) that a URL was added or updated, so they recrawl it faster. When enabled, on publish/update the plugin sends the changed URL and your site’s IndexNow key to https://api.indexnow.org. No visitor or personal data is sent.
Protocol/terms: https://www.indexnow.org/ · Bing privacy: https://privacy.microsoft.com/privacystatement

Google Tag Manager (GTM)

Optional. Loaded only if you enter a GTM container ID. The plugin outputs Google’s GTM loader (https://www.googletagmanager.com) so tags you configure in your own GTM account run on your site. Data sent is defined by your GTM configuration.
Terms: https://marketingplatform.google.com/about/analytics/tag-manager/use-policy/ · Privacy: https://policies.google.com/privacy

Google Analytics 4 (GA4)

Optional. Loaded only if you enter a GA4 Measurement ID. The plugin outputs Google’s gtag.js loader (https://www.googletagmanager.com/gtag/js) to send visitor analytics to your GA4 property.
Terms: https://marketingplatform.google.com/about/analytics/terms/us/ · Privacy: https://policies.google.com/privacy

Microsoft Clarity

Optional. Loaded only if you enter a Clarity project ID. The plugin outputs the Clarity loader (https://www.clarity.ms) to send session/heatmap analytics to your Clarity project.
Terms: https://clarity.microsoft.com/terms · Privacy: https://privacy.microsoft.com/privacystatement

Note: the SEO analysis feature may fetch pages on your own website (same domain) to read their rendered HTML; no data is sent to any third party.

The Free version does not include any licensing or AI client and never contacts a RankVN server; all AI features are part of RankVN SEO Pro only.

Privacy

RankVN SEO Free does not send your site data externally by default.
* IndexNow: only active if you enter an IndexNow key; sends the submitted public URL plus the key (see External services).
* Google Tag Manager / Google Analytics 4 / Microsoft Clarity: tracking snippets are only rendered if you explicitly enable them and enter the corresponding ID; data is then collected by those third parties from visitors’ browsers.
* Reader Ratings: stores total vote counts and rating averages in local WordPress post metadata only. No visitor IP addresses, browser cookies, or personal tracking tokens are collected.
* The Free version does not contact a RankVN server; licensing and AI features are Pro-only.