Plug in SEO vs SEO King (2026): which should you pick?

Pick Plug in SEO if

• Fits if you want a list of what's wrong with your store's SEO and the steps to fix it
• Works for catalogs where every title and description should follow one template

Look elsewhere if

• Skip it if you're not on Shopify, as it only installs from the Shopify App Store
• Not for you if you want a free plan, as it's $29.99 a month once the 7-day trial ends
• Tight if your store has more than 200 pages, since Lite stops there and runs 2 full audits a month
• Pricey if you want speed reports or the expert call, which start at $49.99 a month
• Watch out: the done-for-you Quick Start packages are sold separately from the app

Pick SEO King if

• Fits if you run a Shopify store and want AI meta text without counting credits
• Works for large catalogs, since 20,000 pages is $16.99 a month

Look elsewhere if

• Skip it if your store isn't on Shopify, as that's the only place it installs
• Tight if you stay free, because AI text, bulk photo work, robots.txt and llms.txt are all paid
• Watch out: alt text read from the photo itself is about $1 per 400 photos, and translation and upscaling also use prepaid credits
• Pricey if you want it done for you, as the Full-Service tier is $95 a month or $595 a year, with no theme work

Plug in SEO

• Works only on Shopify stores; it is installed from the Shopify App Store.
• There is no free plan: after the 7-day trial, plans start at $29.99 a month.
• Lite scans 200 pages and runs 2 full audits a month; speed reports and the expert call start at Standard at $49.99.
• Done-for-you Quick Start Service packages, fixed-price and one-time, are sold separately from the app.

SEO King

• Works only on Shopify stores; it is installed from the Shopify App Store.
• AI text, auto-updating, bulk photo work, robots.txt, llms.txt and advanced JSON-LD all need a paid tier; tiers differ only in pages covered.
• Vision AI, translation, upscaling and background removal are paid per use from prepaid credits, or by an optional unlimited AI credits plan.
• A done-for-you Full-Service tier with expert setup and monthly strategy calls costs $95 a month or $595 a year, without theme work.

Plug in SEO

SEO audit with fix instructions

Scans the homepage, products, collections and blog posts for missing tags, broken schema and other issues, with plain-English steps for each fix.

Bulk edits and templates

Edit image alt text, file names, URLs, meta titles and descriptions in bulk, or apply Liquid title and description templates across every product and collection.

Keyword Studio

AI keyword research, search trends and keyword analytics, covering 20, 200 or 2,000 pages depending on the plan.

AI titles and descriptions

AI drafts product titles and descriptions around the chosen keywords, and every change waits for your approval.

JSON-LD structured data

Adds Product, BreadcrumbList and FAQPage schema to products and collections automatically, for price, rating and stock in Google results.

Broken links and speed reports

Detects broken links and redirects them in one click. Speed and performance reports start at Standard, with 5 a month, and are unlimited on Premium.

SEO King

Unlimited AI meta text

Paid plans write meta titles, meta descriptions, alt text and product descriptions with GPT and Gemini models, with no credit limit, and can keep them updated.

Image optimization

Compresses, resizes, converts and renames photos without a meter. Vision AI alt text from the photo itself is pay-per-use, about $1 per 400 photos.

Store scan and SEO checklist

Scans the store for SEO issues on every plan and lists fixes in a checklist and dashboard; changes can be previewed before they go live.

JSON-LD, sitemaps and robots.txt

Advanced JSON-LD schemas including FAQ markup, image sitemaps, and robots.txt and llms.txt editing on paid plans.

Keywords and SERP rankings

Google Search Console stats and site keyword analytics on every plan, with SERP rank tracking and a page tracker in the app.

Links, redirects and translation

Finds broken links and 404 errors, manages redirects and URL rewriting, and writes SEO text in more than 40 languages.

Plug in SEO

• Lite$29.99

  per month for up to 200 pages scanned, billed every 30 days

  AI keyword research for 20 pages, 2 full audits a month, title and meta tools, JSON-LD, one-click broken-link redirects and keyword analytics.

• Standard$49.99

  per month for up to 2,000 pages scanned, billed every 30 days

  Keyword research for 200 pages, 5 full audits and 5 speed reports a month, and a free 30-minute call with an SEO expert.

• Premium$79.99

  per month, billed every 30 days

  Unlimited page scans, keyword research for 2,000 pages, 10 full audits a month, unlimited speed reports and priority support.

SEO King

• Free basics$0

  Unlimited alt text, meta title and meta description updates, photo renaming and optimization, store scans and Search Console analytics.

• 500 Pages$9.99

  per month for up to 500 pages, billed every 30 days

  All features: unlimited AI text, auto-updating, bulk photo optimization, the fast SEO editor, robots.txt, llms.txt and advanced JSON-LD.

• 5,000 Pages$13.99

  per month for up to 5,000 pages, billed every 30 days

  The same features as 500 Pages, for stores with up to 5,000 pages.

• 20,000 Pages$16.99

  per month for up to 20,000 pages, billed every 30 days

  The same features as 500 Pages, for stores with up to 20,000 pages.

Plug in SEO

No public discounts listed.

SEO King

• Annual discount

  Save up to 52% with yearly billing

  The listing offers the 500-page tier at $69.99 a year (42% off), 5,000 pages at $79.99 (52%) and 20,000 pages at $99.99 (51%).