Is the SEO certificate free?

Yes. You can take the test and download your certificate for free, within the limits of your plan.

How many questions does the SEO test have?

The test has 20 multiple-choice questions and a 20-minute time limit. Each attempt uses a new random set.

What score do I need to pass?

You need at least 70% correct answers. Higher scores unlock the SEO Professional (80%) and SEO Expert (90%) levels.

Is this an accredited SEO certification?

No accreditation body exists for SEO. This is a certificate of achievement issued by DiagnoSEO after passing a timed knowledge test.

Does Google offer an SEO certification?

No. Google does not certify SEO skills. Certifications come from SEO tool vendors, academies and agencies.

Can I add the certificate to LinkedIn?

Yes. Use the Add to LinkedIn profile button. The name, issuer, date and verification URL are filled in automatically.

How can employers verify my SEO certificate?

Every certificate has a unique ID, a public verification page and a QR code. The badge links to that page.

Can I retake the test?

Yes. Each attempt draws new random questions, so you can improve your score and level.

Get Your Certificate in SEO

Get your Certificate in SEO with a free online SEO test. You answer 20 multiple-choice questions about search engine optimization. Score at least 70% and earn a DiagnoSEO SEO certification with a public verification link.

Add the certificate to the Licenses & certifications section of your LinkedIn profile. Attach it to your résumé or embed a certified badge on your website.

What is the DiagnoSEO SEO certification test?

It is an exam-style SEO knowledge assessment, not a course. Each attempt draws 20 random questions from a bank of more than 50. You have 20 minutes. Questions are balanced across eight areas of SEO:

SEO fundamentals – how search engines crawl, index and rank pages
Keyword research – search intent, long-tail keywords, keyword difficulty
On-page SEO – title tags, meta descriptions, headings, internal linking, structured data
Technical SEO – robots.txt, canonical tags, Core Web Vitals, JavaScript rendering, HTTPS
Off-page SEO – link building, anchor text, nofollow, the Disavow tool
Content optimization – E-E-A-T, duplicate and thin content, featured snippets, AI Overviews
Analytics – Google Search Console, GA4, organic traffic and CTR
Local and international SEO – local ranking factors, NAP consistency, hreflang

Your score decides the level printed on the certificate:

SEO Specialist – 70–79%
SEO Professional – 80–89%
SEO Expert – 90–100%

Who should get an SEO certificate?

An SEO certification proves your search engine optimization skills to employers and clients. It is useful for:

Beginners who want to check what they learned from free SEO courses
SEO specialists and freelancers building a credible portfolio
Agencies that want a verifiable badge on their website
Content marketers who need on-page SEO and keyword research skills
Job seekers preparing for an SEO job interview
Recruiters and team leads assessing SEO knowledge of candidates

SEO certificate test vs. typical SEO certification courses

Functionality	DiagnoSEO	Other SEO certifications
Free SEO test with certificate	✅	✅
No hours of video lessons required	✅	❌
Random questions on every attempt	✅	❌
Public certificate verification page and QR code	✅	❌
One-click "Add to LinkedIn profile"	✅	❌
Embeddable badge for your website	✅	❌
Explanation for every answer	✅	❌

How to get your SEO certificate online

Enter your full name exactly as it should appear on the certificate.
Start the test – 20 questions, 20 minutes, one correct answer each.
Use the question map to skip and return to questions.
Finish the test and read the explanations in the answer review.
Download the PNG, add the certification to LinkedIn or copy the badge embed code.

Tips for passing the SEO certification exam

Refresh technical SEO basics: crawling vs. indexing, status codes, canonical tags.
Know the current Core Web Vitals metrics and their thresholds.
Learn how Google Search Console and GA4 measure organic performance.
Read every option – distractors are common SEO myths.
Review the explanations after the test, even if you passed.

Where to show your SEO certificate

A certificate only works when people can see it. The most useful places:

LinkedIn profile – the "Licenses & certifications" section, with the verification link attached
Résumé and cover letter – attach the PDF or paste the certificate ID
Your website or portfolio – embed the badge near your services or "About" section
Proposals and pitch decks – prospects can verify the certificate themselves
Email signature – a short line with a link to the verification page

Everyone who opens the link sees your name, level, score and issue date. Prospects mentioned the verifiable certificate as one reason they reached out.

FAQ

Is the SEO certificate free?

Yes. You can take the test and download your certificate for free, within the limits of your plan.
How many questions does the SEO test have?

The test has 20 multiple-choice questions and a 20-minute time limit. Each attempt uses a new random set.
What score do I need to pass?

You need at least 70% correct answers. Higher scores unlock the SEO Professional (80%) and SEO Expert (90%) levels.
Is this an accredited SEO certification?

No accreditation body exists for SEO. This is a certificate of achievement issued by DiagnoSEO after passing a timed knowledge test.
Does Google offer an SEO certification?

No. Google does not certify SEO skills. Certifications come from SEO tool vendors, academies and agencies.
Can I add the certificate to LinkedIn?

Yes. Use the "Add to LinkedIn profile" button. The name, issuer, date and verification URL are filled in automatically.
How can employers verify my SEO certificate?

Every certificate has a unique ID, a public verification page and a QR code. The badge links to that page.
Can I retake the test?

Yes. Each attempt draws new random questions, so you can improve your score and level.