Most Shopify SEO app lists run to fifteen entries sorted by affiliate payout. There are four jobs worth an app, and none of them is the thing holding your store back.
Most lists of Shopify SEO apps run to fifteen entries with a paragraph each. The length is the tell. A longer list means more affiliate links, and the ranking is usually payout order wearing a numbered list.
Here's the shorter version, organized by the job rather than the brand, plus the part those lists leave out: three of the four jobs are things Shopify already does, and the fourth is the only one worth paying for.
What Shopify already handles
Before installing anything, know what you'd be paying to duplicate.
Shopify generates your XML sitemap automatically and keeps it current. It sets canonical tags on products by default. It gives you editable title tags and meta descriptions on every product, collection and page, in the admin, for free. It handles SSL, mobile rendering and URL structure without you touching anything.
That covers a meaningful share of what a 2015-era SEO app existed to do. If an app's headline feature is "add meta descriptions," you already have that.
What Shopify does not do is tell you which of your two hundred products has a broken one.
The four jobs worth an app
One: bulk editing and templating. You have three title tag patterns generating two hundred titles. Changing them one at a time in the admin is a week of work; changing the template is ten minutes. This is the single most useful thing an SEO app does.
Two: auditing and monitoring. Finding the broken canonical, the missing alt text, the 404 on a URL that used to rank, the product that quietly fell out of the index. Detection at scale.
Three: image weight. Images are usually the largest thing on an ecommerce page and compression is genuinely mechanical work worth automating. Note that this is a speed job wearing an SEO label, which is why so many of these apps are named "SEO and image optimizer."
Four: structured data. Product, breadcrumb and organization schema, validated. Most themes ship some and few ship all of it.
That's four. Most stores need two of them.
The short list
Tiny SEO (TinyIMG) is the one most reviewers land on, and it's mainly an image and speed tool with SEO features attached. Free to install, and the image compression is the part that earns its place.
Yoast SEO for Shopify brings the templating discipline from its WordPress lineage, with AI-assisted titles and meta descriptions in the product editor. If bulk templating is your problem, this is the closest thing to a purpose-built answer.
Plug in SEO is audit-first: scan the store, list the problems, fix them. Aimed at DIY merchants and it's honest about being a checklist with a UI.
Smart SEO (Sherpas) covers meta generation, structured data and image optimization in one, which makes it the generalist of the group.
SEO Manager by Venntov is the most technical of them: structured data, broken link checking, readability. Best fit if you already know what you're doing and want instrumentation rather than guidance.
StoreSEO and Tapita cover similar ground with JSON-LD, sitemaps, redirects and AI content generation.
Pick one. Not three. Every one of these injects script and several write tags into your theme, which is the same app bloat problem that makes stores slow, and slow stores rank worse. Installing three SEO apps to improve your SEO is a genuinely common own goal.
A word on the AI features. Several of these now advertise llms.txt generation as a way to get cited by AI search. We tested this on our own properties and found no evidence it drives citations. It costs nothing to have, so it's not a reason to avoid an app, but it is not a reason to choose one either. Treat it as a checkbox, not a feature.
What none of them fix
Here's the part the lists skip, and it's the reason most merchants install an SEO app and see nothing change.
Your collection pages are empty. They're a headline and a product grid. That's the page type that ranks for the terms you want, and no app writes the several hundred words of useful text that would make it competitive. They'll generate a meta description for a page that has nothing on it.
Your product descriptions came from the manufacturer. They're on forty other sites. An app can rewrite them with AI, and now they're generic text that a machine wrote, which is a different problem rather than a solved one.
Google has the wrong pages indexed. Faceted navigation turning two hundred products into forty thousand filter URLs is an architecture problem. Most apps will report it. None will fix it.
Nobody links to you. No app moves this, and it's usually the actual constraint.
This is the honest ceiling on the category, and the better reviewers say so. As ecommerce-gold puts it in their own roundup, an SEO app alone won't get you to the top of Google.
This is also the gap we work in, so read it knowing that. Qosmic reads your live storefront, reports what's failing against a standard, and then generates the thing that's missing, whether that's the collection page copy, the schema or the fixed template, inside your own theme, staged as a draft you approve. Detection plus the write. That's the difference between an app that hands you a list of four hundred problems and something that closes them.
An SEO app is still the right call if your problem is bulk editing. It is not the right call if your problem is that your pages have nothing on them.
What to install, by situation
Under about fifty products. Nothing. Edit titles and descriptions by hand in the admin, write real collection copy, and spend the subscription on anything else.
A few hundred products, titles are a mess. One templating app. Yoast or Smart SEO. Fix the pattern, not the pages.
Images are heavy and the store is slow. TinyIMG, and treat it as a speed tool. Then read the page speed post, because apps are usually the cause rather than the cure.
You want to know what's broken. Plug in SEO or SEO Manager, or run a crawler yourself and pay nothing.
You're on Shopify Plus with a real catalog. You need a person, not an app. best shopify seo services exists as a search for a reason.
The short version
Shopify already does sitemaps, canonicals, editable meta fields and SSL. Don't pay for those twice.
Four jobs are worth an app: bulk templating, auditing, image weight, structured data. Most stores need two.
Install one. Three SEO apps make your store slower, and speed is a ranking factor, so you can absolutely install your way backwards here.
llms.txt is a checkbox, not a feature. We tested it.
And no app fixes empty collection pages, manufacturer copy, a broken index, or the fact that nobody links to you. That's where the actual work is, and it's why the app you install rarely changes the number you were watching.
