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Best SEO Plugins & Apps (2026): our top 3 of 79, ranked

As of Oct 24, 2026, our top pick is Slim SEO (3.4 GPA), then SEO King and SmartCrawl.

Ranked by ToolGPA on Oct 24, 2026 · listings checked up to Oct 23, 2026

Add titles, schema, sitemaps and redirects from inside WordPress, Shopify, Wix or Webflow.

Free guide to SEO plugins and apps

Our top three SEO plugins and apps

Slim SEO comes first: its free WordPress plugin writes meta tags, schema and sitemaps on its own and handles redirects and 404s, which Yoast, AIOSEO and SEOPress keep for paid plans. SEO King is second for Shopify stores, and SmartCrawl third for WordPress writers who want post checks and a schema builder in the free plugin. Yoast SEO narrowly missed: its free plugin checks one keyphrase and has no redirects or link suggestions, and Premium is $118.80 a year for each site before VAT.

  1. First: Slim SEO

    Free plan · from $59/yr

    For: Most WordPress site owners

    Slim SEO writes meta titles, descriptions, robots and social tags, connected JSON-LD schema, XML, image and News sitemaps and breadcrumbs from each post with no setup, and the free plugin also handles redirect rules and logs 404s. Personal is $59 a year for one site and renews at the same price, adding a schema builder with 30+ types, link suggestions, Search Console reports and a writing assistant. Know the limits: it runs only on self-hosted WordPress, AI meta writing uses your own OpenAI, Gemini, Claude or OpenRouter key billed by that provider, and writing tips while you draft are Pro only.

    Slim SEO pricing and details

  2. Second: SEO King

    Free plan · from $9.99/mo

    For: Shopify store owners

    SEO King scans a Shopify store and lists fixes, edits meta titles, descriptions and alt text, renames and compresses photos, finds broken links and 404s, manages redirects and shows Search Console stats; the free basics have no stated cap. Paid tiers add unlimited AI meta text, robots.txt and llms.txt editing and advanced JSON-LD, from $9.99 every 30 days for 500 pages to $16.99 for 20,000. It is second because it works only on Shopify, the free basics write no AI text, and Vision AI alt text, translation and background removal are paid per use from prepaid credits.

    SEO King pricing and details

  3. Third: SmartCrawl

    Free plan · from $50/yr

    For: WordPress writers who want post checks in the free plugin

    SmartCrawl's free WordPress plugin sets title formats, builds XML sitemaps, adds social tags and 301 redirects, has a schema types builder, and grades each post for keyword use and readability in the editor, after a setup wizard and an SEO checkup. Pro Basic is $50 a year for one site. It is third because there are title formats, sitemap types and schema to choose before it is done, where Slim SEO fills these in on its own, and Pro is not sold alone: every paid plan is WPMU DEV's bundle of Pro plugins, with scheduled audits, auto-linking, IndexNow and regex redirects held there.

    SmartCrawl pricing and details

Ranked on Oct 24, 2026 from what each listing shows and what people say about the tool, not from our own testing. How we rank

Price against what you get

Which SEO plugins and apps give the most for the money?

Going by our grades, Slim SEO and XML Sitemap Generator for Google give the most for the money among SEO plugins and apps: no tool on this chart scores higher without costing more.

See all 70 on the chart

Keep or make

Could you make your own?

Keep62Your call13Make4You could make at least the basics of 17 of these SEO plugins and apps.

Price
Runs on
Must be

79 tools

Tools

  • 404 to 301

    SEO Plugins

    3.0GPA

    Free WordPress redirect manager with detailed 404 error logs

    FreeWeb

  • 4SEO

    SEO Plugins

    2.2GPA

    All-in-one SEO extension for Joomla with Search Console insights

    From $95/yrWeb

  • Adaptify SEO

    SEO Plugins

    2.2GPA

    Automated SEO content, PR backlinks and AI visibility, per site

    Free trial · from $499/moWeb

  • AI SEO Copilot

    SEO Plugins

    3.0GPA

    Free, open-source on-page SEO checker inside the Webflow Designer

    FreeWeb

  • AI Visibility Booster

    SEO Plugins

    1.8GPA

    Wix app for keyword rank tracking, research and SEO fixes

    Free plan · from $25/moWeb

  • All in One SEO (AIOSEO)

    SEO Plugins

    2.8GPA

    WordPress SEO plugin with schema, redirects, link suggestions and AI

    Free plan · from $99/yrWeb

  • AltText.ai

    SEO Plugins

    2.4GPA

    AI alt text for images, with WordPress and Shopify plugins

    Free trial · from $5/moWeb

  • Amasty SEO Toolkit

    SEO Plugins

    1.6GPA

    Magento 2 SEO extension for meta templates, snippets and sitemaps

    From $349/yrWeb

  • Automatic SEO Tags Fixer

    SEO Plugins

    2.2GPA

    Wix app that rewrites meta, canonical, robots and social tags

    Free plan · from $7.99/moWeb

  • Avada Blog SEO AEO Content

    SEO Plugins

    2.2GPA

    Shopify blog builder with an AI writer, SEO score and keyword research

    Free plan · from $14.90/moWeb

  • Avada SEO Suite

    SEO Plugins

    2.2GPA

    Shopify SEO app with AI audits, image compression and speed tools

    Free plan · from $34.95/moWeb

  • BulkSEO

    SEO Plugins

    1.8GPA

    Webflow app for editing page SEO metadata in bulk through CSV files

    Free planWeb

  • FavSEO

    SEO Plugins

    2.4GPA

    BigCommerce app for bulk title and meta description edits and audits

    Free plan · from $19.95/moWeb

  • Flowtrix Schema

    SEO Plugins

    2.0GPA

    No-code schema markup app for Webflow pages and CMS items

    Free planWeb

  • FluidSEO

    SEO Plugins

    2.2GPA

    Webflow app for page audits, AI alt text, meta tags and schema

    Free plan · from $24/moWeb

  • Graphite

    SEO Plugins

    2.0GPA

    Webflow app for bulk metadata, schema, robots.txt and AI tracking

    Free planWeb

  • JSON-LD for SEO

    SEO Plugins

    2.2GPA

    Shopify structured data app for rich results and Merchant Center

    Free trial · from $399/yrWeb

  • LinkerFlow

    SEO Plugins

    1.8GPA

    AI internal linking and link audits for Webflow, WordPress and Wix

    From $20/moWeb

  • Media File Renamer

    SEO Plugins

    2.8GPA

    WordPress plugin that renames media files to descriptive names

    Free plan · from $39/yrWeb

  • One-Click Optimizer

    SEO Plugins

    2.0GPA

    Wix app that applies robots, canonical, alt text and FAQ schema fixes

    Free plan · from $25/moWeb

  • Permalink Manager

    SEO Plugins

    2.8GPA

    WordPress plugin for editing full URLs and permalink formats

    Free plan · from €49 one-timeWeb

  • Plug in SEO

    SEO Plugins

    2.0GPA

    Shopify SEO audit app with bulk fixes, keyword research and JSON-LD

    Free trial · from $29.99/moWeb

  • PrettyLinks

    SEO Plugins

    2.2GPA

    WordPress plugin for branded short links and affiliate link tracking

    Free plan · from $249/yrWeb

  • Redirection

    SEO Plugins

    3.0GPA

    Free WordPress plugin for managing 301 redirects and 404 errors

    FreeWeb

  • Schema Flow

    SEO Plugins

    2.4GPA

    Webflow app for JSON-LD schema with AI pre-fill and CMS mapping

    Free plan · from $99 one-timeWeb

  • Schema Plus for SEO

    SEO Plugins

    2.0GPA

    Shopify JSON-LD app for product, review and merchant listing schema

    Free trial · from $10.99/moWeb

  • Schema Pro

    SEO Plugins

    1.8GPA

    WordPress plugin for adding schema markup across a site by rules

    From $79/yrWeb

  • SearchPie

    SEO Plugins

    2.4GPA

    Shopify SEO app for schema, meta tags, indexing and page speed

    Free plan · from $39/moWeb

  • Semflow

    SEO Plugins

    2.4GPA

    SEO and AI visibility assistant inside Webflow, Framer and Chrome

    Free trial · from $10/moWeb

  • SEO & AI Traffic Booster

    SEO Plugins

    2.6GPA

    rankingCoach's Wix app for SEO tasks, listings and reviews

    Free plan · from $5/moWeb

  • SEO King

    SEO Plugins

    2.6GPA

    Shopify SEO app with unlimited AI meta text and image optimization

    Free plan · from $9.99/moWeb

Common questions

What are the best SEO plugins and apps?

As of Oct 24, 2026, ToolGPA ranks Slim SEO first (for: most WordPress site owners), SEO King second (for: shopify store owners), SmartCrawl third (for: wordPress writers who want post checks in the free plugin).

How does ToolGPA rank SEO plugins and apps?

From what each tool's own pages show (price, free plan, platforms, features and limits) and from what people say about it in public reviews and discussions. Not from our own testing. First place goes to the tool that suits the most people, and second and third to the best choices for the readers it leaves out.