CROMagnet vs Semrush and Ahrefs site audits: store audit or SEO crawl?
Based on public information as of October 2026
In short
Semrush and Ahrefs crawl a whole website to find technical and on-page SEO issues across thousands of pages. CROMagnet reads the pages that matter to a sale, a store's home, product, cart and checkout, and finds conversion, trust, tracking and speed problems. One is a crawler for search visibility, the other an audit for store revenue.
Semrush and Ahrefs and CROMagnet, side by side
| Semrush and Ahrefs | CROMagnet | |
|---|---|---|
| Scope | Crawls the whole site, many pages | Home, product, collection, content page and the purchase flow where reachable |
| Focus | Technical and on-page SEO: links, redirects, duplicates, titles, structured data | Conversion, trust, tracking, speed and discovery for an ecommerce store |
| Issues checked | Ahrefs lists 170+ issue types, Semrush hundreds | 200+ store-specific checks |
| Access needed | Ahrefs Site Audit is free for verified sites, paid for others, and Semrush offers a free single-page checker | None. Any public store can be audited |
| Best for | SEO teams managing large sites | Store owners and agencies fixing what costs sales |
| Price | Paid plans for full crawls, with free limited options | Free first audit, plans from $19 a month |
What Semrush and Ahrefs does well
- Crawls every page, so it finds broken links, redirect chains and duplicate titles across the whole site
- Tracks backlinks, rankings and keywords in the same product
- Mature reporting and scheduling for SEO teams
- Works on any kind of site, not only stores
What CROMagnet adds
- Looks at what shoppers do: whether the price fits the phone screen, whether the pixel fires, whether checkout forces an account
- Does not need your verification or access to audit a competitor
- Findings ranked by what they cost, with fix steps for Shopify and WooCommerce
- Written for store owners, not SEO specialists
Use Semrush and Ahrefs when
- You manage search visibility for a large site
- You need link, ranking and keyword data
- You need a full crawl for broken links and duplicates
Use CROMagnet when
- You want to find what loses sales on the pages that matter
- You run or advise ecommerce stores
- You want an answer in minutes, without setup
Using them together. An SEO crawler tells you how search engines see every page. The audit tells you what a shopper does on the few pages that earn money. They answer different questions.
Common questions
001Can the audit replace an SEO tool?
No. It checks the discovery basics, such as indexing, sitemaps and structured data, but it does not crawl a whole site or track rankings.
002Can an SEO tool replace the audit?
It will not tell you whether a shopper can find the buy button, whether the pixel fires or whether checkout is easy.
See the difference on your own store.
Free, and every finding shows its evidence.