SEO Minion Alternative - DiagnoSEO
Why people look for a SEO Minion alternative
SEO Minion was a popular free SEO extension for years on Chrome, Firefox, and Edge. Its strengths are SERP preview, broken-link checking, hreflang validation, redirect tracking, PAA (People Also Ask) extraction, and a Google search location simulator. For content editors and SERP-focused workflows, it covers a lot.
The reasons people look for a SEO Minion alternative tend to come down to three:
- Acquired by Keywords Everywhere — now a paid bundle. SEO Minion is now distributed through Keywords Everywhere and requires one of their paid plans (Silver, Gold, or Platinum) to use. The previously free extension no longer exists as a standalone free tool. For users who initially adopted SEO Minion because it was fully free, the bundle requirement is a complete model change.
- No AI Overviews / GEO checks. SEO Minion focuses on classical SERP + on-page work. There are no checks for
llms.txt, no FAQPage/speakable schema validation tuned for AI Overviews, no LLM-parseability metrics. - No quantified score, no keyword placement scoring, no JavaScript rendering diff. Like most extensions in its category, SEO Minion shows raw values but does not aggregate them into a verdict or check where a target keyword appears across the page.
DiagnoSEO is 100% free with no upgrade tier, no usage cap, no account, and adds GEO readiness, keyword placement scoring, a 0-100 SEO score, and an HTML vs rendered DOM diff — no bundle, no upsell, no third-party account dependency.
Feature comparison
| Feature | DiagnoSEO | SEO Minion |
|---|---|---|
| Free with no upgrade tier | ✅ Fully free | ❌ Requires Keywords Everywhere paid plan |
| No account required | ✅ | ❌ Keywords Everywhere account required |
| Chrome and Firefox | ✅ | ✅ |
| Title, meta description, canonical | ✅ | ✅ |
| H1-H6 heading inspection | ✅ Interactive tree | ✅ |
| Open Graph + Twitter Card | ✅ With preview | ✅ |
| Hreflang validation | ✅ + duplicate detection | ✅ + return-tag check |
| Broken link checker | ⚠️ Active-page only | ✅ Full-page crawl |
| SERP preview | ❌ | ✅ |
| Google location simulator | ❌ | ✅ |
| People Also Ask extraction | ❌ | ✅ |
| Redirect chain visualization | ✅ Color-coded | ✅ |
| 301/308 vs 302/303/307 scoring | ✅ | ❌ |
| 0-100 SEO score | ✅ | ❌ |
| Keyword placement checker | ✅ 12+ scored checks | ❌ |
| GEO / AI Overviews tab | ✅ | ❌ |
| llms.txt detection | ✅ | ❌ |
| HTML vs rendered DOM diff | ✅ | ❌ |
| Missing noopener detection | ✅ | ❌ |
| Empty anchor text warning | ✅ | ❌ |
| Schema.org inspector | ✅ | ⚠️ Limited |
| CSV export | ✅ Links | ✅ Various |
| Zero tracking | ✅ | ✅ |
Where DiagnoSEO wins
Fully free, no Keywords Everywhere account needed. DiagnoSEO has no Pro plan, no monthly fee, no third-party bundle requirement. The same extension that delivers the GEO tab and HTML vs rendered DOM diff costs zero, no separate account. If you were burned by SEO Minion moving behind the Keywords Everywhere paywall, this matters.
AI Overviews readiness. The GEO tab brings checks specifically designed for the AI search era: llms.txt detection, FAQPage / Article / speakable schema validation, paragraph length, sentence length, first-paragraph number detection. SEO Minion does not address AI Overviews at all.
HTML vs rendered DOM diff. Critical for SPAs and JavaScript-heavy sites. Shows line-by-line what JavaScript adds, removes, or rewrites after the initial HTML — directly relevant to AI Overviews and non-JS crawler visibility. SEO Minion does not surface this.
Keyword placement scoring. Type any keyword, get Exact/Partial/Missing verdict in 12+ on-page locations plus a weighted 0-100 score. SEO Minion does not include keyword analysis.
Quantified 0-100 SEO score. Transparent deduction rules collapse the audit into one number suitable for tracking, reporting, and comparison.
Where SEO Minion wins
Honest assessment — these are real strengths, just locked behind the paid bundle now.
SERP preview. SEO Minion shows exactly how the page will look in Google search results — title, meta description, URL — with character counts and visual preview. DiagnoSEO does not render a SERP preview (it shows character counts but no visual). For content editors writing meta on a Keywords Everywhere subscription, SEO Minion's SERP preview is genuinely helpful.
Google search location simulator. SEO Minion can simulate Google search results from any country and city. Useful for international SEO and local SEO verification. DiagnoSEO has no equivalent.
People Also Ask extraction. SEO Minion grabs the PAA questions from a SERP and lets you export them. Useful for keyword research and content briefs. DiagnoSEO does not do PAA.
Full-page broken-link crawl. SEO Minion crawls every link on the current page and reports broken ones. DiagnoSEO surfaces individual broken images and missing destinations in its Images and Links tabs but does not perform a deep cross-page link crawl from the extension.
When to switch (and when to install both)
Run both if you already pay for Keywords Everywhere and want SEO Minion's SERP-side features (SERP preview, location simulator, PAA) alongside DiagnoSEO's deeper on-page audit + GEO + Diff.
Switch fully to DiagnoSEO if you do not want to pay for a Keywords Everywhere subscription just to access SEO Minion, do not need SERP preview, and want AI Overviews readiness in your audit.
Stay with SEO Minion if SERP preview, location simulator, or PAA are central to your daily work and the Keywords Everywhere bundle pricing is acceptable for your workflow.
Frequently asked questions
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The browser extension is a free entry point to the broader DiagnoSEO platform. Advanced cloud features (keyword tracking, site audits, backlinks) are part of the paid DiagnoSEO suite, but the extension itself is fully free, standalone, and does not require an account in any other product. Future versions will not paywall existing extension features or move them behind a third-party bundle.
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Not a visual SERP preview. The Overview tab shows title length and meta description length with character counts (and Good/Warning/Issue verdicts), but does not render a thumbnail of the actual Google search result. If SERP preview is essential, install both.
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No. Location-specific Google search simulation is unique to SEO Minion (and a few competitors). DiagnoSEO focuses on on-page audit and AI Overviews readiness instead.
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Partial. DiagnoSEO detects broken favicons and broken images, and the Links tab lists every link with internal/external classification. It does not crawl every link's status code from the extension — that would conflict with the active-tab permission model. For full broken-link crawls, use a dedicated tool or SEO Minion.
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Yes. Both Chrome and Firefox builds are available. See the Firefox version page.
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