SEO Tester Online

What SEO Tester Online does

SEO Tester Online is an all-in-one SaaS SEO platform operated by Italian company Quarzio s.r.l., headquartered in Catania, Sicily. Founded in 2016, the platform bundles technical SEO auditing (SEO Checker, SEO Spider), keyword research and tracking (Keyword Explorer, Rank Tracker, Keyword List Manager, SERP Checker), backlink analysis, content optimization (Writer Assistant AI, Copy Metrics), white-label reporting, team collaboration (Workspace), and lead generation into a single subscription product. It is built on a Node.js/Angular/Express stack hosted on AWS infrastructure and offers API access restricted to enterprise subscribers.

The company serves three primary customer segments — digital marketers and SEO/SEM professionals, web/SEO/PPC agencies managing multiple client portfolios, and small-to-medium businesses optimizing their own websites — with a secondary footprint in enterprise (custom plans with dedicated account management) and software developer integrations via the SEO API. Customer testimonials span SMBs (Oneminutesite.it, Fattura24, Trasporti Gianni Iuvarà, ShippyPro), agencies (Open-Box, CreationDose, Socialmediacoso.it), an education customer (HFarm School), and enterprise (SiteGround). The platform reports 500,000+ users across 45+ countries, with keyword coverage in 36 locations and 10+ million SEO analyses performed annually.

Monetization is entirely subscription-based across seven published tiers (Lite €18/month, Advanced €26/month, Pro €38/month, Plus €56/month, Agency Premium €96/month, Agency Infinity €296/month, Enterprise from €499/month), with annual billing offering approximately 30% savings and a 7-day free trial. Distribution is hybrid: product-led self-serve signup via the website (available in five languages) combined with direct enterprise sales, partner/reseller/affiliate/trainer programs, and co-marketing relationships with AWS, SiteGround, and TIM Wcap. The company is privately held under Quarzio s.r.l., GDPR-compliant, and has raised approximately $263,665 across two disclosed funding rounds (2016 and 2019).

Name

SEO Tester Online

Legal name

Quarzio s.r.l.

Website

https://seotesteronline.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

SEO Tester Online is an all-in-one SaaS SEO platform that bundles technical auditing, keyword research, rank tracking, backlink analysis, AI-assisted content writing, white-label reporting, and lead generation into a single subscription. It serves digital marketers, SEO/SEM agencies, and SMBs across 45+ countries via tiered plans from €18 to €499+/month.

Ownership category

akta.pro rank

Product category

SEO Software

NAICS

Web Search Portals and All Other Information Services (51929), Marketing Research and Public Opinion Polling (541910)

SIC

Services-Advertising (7310), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

SEO Platform & Tooling Services (Implementations, Training, Enablement) (BPAFAJAJ)

akta.pro secondary industries

Technical SEO (Audits, Crawl/Indexing, Site Architecture) (BPAFAJAA), SEO Analytics, Reporting & Attribution (KPIs, Dashboards, Forecasting) (BPAFAJAI), Search Engine Optimization (SEO) Services (MPAAACAA)

Keywords

• Search engine optimization
• SEO software
• Keyword research
• Rank tracking
• Backlink analysis

Headquarters

HQ city

Catania

HQ country

Italy

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations

Revenue model

1. SaaS Subscription: Core revenue stream from tiered subscription plans (Personal, Agency, Enterprise). Plans are offered on monthly and annual billing cycles with annual discounts of approximately 30%. Annual billing provides significant savings. Enterprise plans include custom pricing.
2. API Access: API access is provided as part of enterprise subscription plans, generating additional revenue from large-scale B2B customers who need programmatic access to the platform's SEO data.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

SEO Tester Online is a cloud-based SaaS platform that provides a suite of search engine optimization (SEO) tools for on-page analysis, site audits, keyword research, rank tracking, backlink analysis, SERP analysis, and AI-assisted content writing. The platform targets digital marketers, SEO/SEM agencies, in-house teams, copywriters, and enterprises seeking to improve organic search visibility through technical, content, and off-page SEO insights. An enterprise-grade REST API is offered for custom integrations and large-scale data needs.

Product overview

SEO Tester Online is an all-in-one SEO platform designed for agencies, marketers, and SMEs to increase organic traffic. The platform combines multiple SEO tools including technical SEO analysis (SEO Checker, SEO Spider/Site Audit), keyword research and tracking (Keyword Explorer, Keyword Rank Tracker, Keyword List Manager, SERP Checker), backlink analysis (Backlink Checker), content optimization (Writer Assistant AI, Copy Metrics), reporting (Report with white-label capabilities), team collaboration (Workspace), and lead generation (Lead Generation Tool). An SEO API is available for enterprise clients requiring programmatic access. The platform provides access to over 1.4 billion keywords across 35+ countries and serves more than 500,000 users worldwide. Pricing is tiered across Personal (Lite, Advanced, Pro plans), Agency (Premium, Plus, Infinity plans), and Enterprise tiers, with a 7-day free trial available.

Differentiator

Problem solved

Functional benefit

Products and services

• SEO Checker

Quantifiable outcome

• Over 500,000 users worldwide served
• +3 more outcomes

Named customers11 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability3 records

Feature10 records

Partnerships

Four partnerships are on record, tiered core and minor.

• AWS (Amazon Web Services)coreTechnology or IntegrationAWS is listed as a technology partner providing cloud infrastructure that supports SEO Tester Online's platform operations. AWS logo is displayed in the partners section of the website, indicating a cloud hosting/infrastructure partnership.
• SiteGroundminorGTM or Marketing PartnerSiteGround is listed as a partner with a digital marketing strategist from SiteGround quoted as a customer of SEO Tester Online. The partnership appears to involve co-marketing and customer relationship, with SiteGround also potentially recommending SEO Tester Online to its web hosting customers.
• Open-Box S.r.l.minorGTM or Marketing PartnerOpen-Box S.r.l. is listed as a partner with its Head of Digital providing a customer testimonial for SEO Tester Online. The partnership involves mutual business relationship and co-marketing.
• TIM WcapminorGTM or Marketing PartnerTIM Wcap (TIM's innovation accelerator/coworking program) is listed as a partner, indicating a collaboration or co-marketing relationship between SEO Tester Online and TIM's startup/innovation ecosystem.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Screaming Frog SEO Spider: Site audit and crawling tool used widely by SEO professionals. Comparable specifically to SEO Tester Online's SEO Spider/Site Audit product for technical SEO use cases.
• Surfer SEO: AI-driven on-page content optimization platform with SERP analysis and content editor. Comparable to SEO Tester Online's Writer Assistant AI and Copy Metrics modules on content-focused SEO.
• Ubersuggest: Neil Patel's lower-priced SEO toolkit covering keywords, site audit, backlinks, and competitor analysis. Comparable value-tier positioning aimed at SMBs and solopreneurs.

Direct peers

• Semrush: Market-leading all-in-one SEO/SEM platform offering keyword research, site audit, rank tracking, backlink analysis, and content tools. Closest direct competitor to SEO Tester Online's integrated workflow and agency/SMB positioning.
• Ahrefs: Premium SEO toolset known for its backlink index, keyword research, site audit, and rank tracking. Directly comparable to SEO Tester Online across the same core feature categories, serving agencies and SMBs.
• Moz Pro: Long-standing SEO platform offering keyword research, rank tracking, site crawl, and link analysis. Comparable all-in-one SaaS targeting marketers, agencies, and SMBs.
• SE Ranking: All-in-one SEO platform with keyword rank tracking, website audit, backlink monitoring, and competitor analysis. Closely mirrors SEO Tester Online's pricing-tier and SMB/agency focus.
• Serpstat: Growth hacking platform covering keyword research, SERP analysis, site audit, backlink analysis, and competitor research. Direct competitor with overlapping feature set and SMB/agency market.
• Mangools: Suite of SEO tools (KWFinder, SERPChecker, etc.) targeted at bloggers, marketers, and SMBs. Comparable on keyword research and SERP analysis with similar entry-level pricing emphasis.
• SpyFu: Competitor keyword research and PPC/SEO intelligence tool with deep SERP and backlink functionality. Comparable in competitor-analysis and keyword research use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/seotesteronline
• Facebookfacebook.com/seotesteronline
• LinkedInlinkedin.com/company/seo-tester-online

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds2 records

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SEO Tester Online