Plug in SEO review

Plug in SEO, now listed as Plug in SEO: SEO Audit & Fix, is the oldest app here, on the Shopify App Store since June 2011. It is built around scanning: the app checks pages for missing tags, broken schema and other issues, then lets you fix alt text, file names, URLs and meta tags in bulk. Starter at $4.99 a month is the cheapest paid plan on this list and includes a scan of up to 30 pages, AI keyword research for 2 pages, one monthly audit, JSON-LD tools, one-click broken link redirects and search trend analytics. Lite at $29.99 raises the scan to 200 pages and adds title and description management and bulk AI edits. Standard at $49.99 covers 2,000 pages with a 30-minute expert call, and Premium at $79.99 is unlimited. The 30-page cap on Starter only suits very small stores, and there is no free plan. Merchants rate it 4.6 from 678 reviews.

Who it is for

small stores that want audits and keyword research at the lowest price

Price

No free plan; Starter $4.99 a month.

Starter $4.99 / month
Quoted from the vendor pricing page on November 13, 2026.

Key features

• Starter at $4.99 a month scans up to 30 pages and includes 1 comprehensive SEO audit a month
• AI deep keyword research, search trends and keyword analytics
• JSON-LD structured data tools and one-click broken link redirects from Starter
• Lite at $29.99 a month scans up to 200 pages and adds bulk AI edits to alt text, file names and URLs
• Standard and Premium plans include a free 30-minute call with an SEO expert

Strengths and weaknesses

• Strength: Cheapest paid plan on this list at $4.99 a month
• Strength: On the Shopify App Store since June 2011, the longest of any app here
• Strength: Interface in English, German, French and Spanish
• Weakness: No free plan, only a 7-day trial
• Weakness: Starter scans only 30 pages
• Weakness: Bulk AI edits and title management start at $29.99 a month

Key facts

• Free plan: No
• Paid plans: $4.99, $29.99, $49.99 and $79.99 a month
• Free trial: 7 days
• Shopify App Store rating: 4.6 from 678 reviews at check time

Where it ranks

Plug in SEO is No. 6 in our Best Shopify SEO Apps verdict.