CRO Agencies in New Zealand
Conversion rate optimisation is testing changes to pages or flows so more visitors complete a defined action, such as an enquiry or a purchase. It needs a clear conversion and enough traffic for a test to mean something. Agencies here publish CRO or conversion rate optimisation. Ask which flow they would test first, who builds the variant, and how an inconclusive result is reported.
This page compares 8 agencies with a New Zealand location.

FizzyPop
FizzyPop is a Napier digital marketing agency at 27 Tennyson Street that specialises in search engine optimisation and performance-led acquisition for New Zealand businesses. SEO is where the team started, and the service covers technical SEO audits, on-site content optimisation, white-hat link building, Google Business Profile management and local SEO for map pack and local search visibility. Work is tied to measurable outcomes such as leads and sales rather than vanity traffic, with forecasting and channel planning across organic search, paid search, display, YouTube and email. The agency is a Google Partner with accreditations in Search, Display, Video and Shopping Ads, and often pairs SEO with paid search gap analysis so organic and paid results reinforce each other. Website design, development, conversion rate optimisation and fast hosting are offered alongside search work so technical fixes that unlock rankings can be implemented in house. Clients have included industrial, agricultural, professional services, retail and tourism businesses across Hawke's Bay and further afield, with a free on-site SEO audit tool available for a first-pass health check before any engagement begins.

NZ Digital
NZ Digital is an Auckland digital marketing agency founded in 2011, with its office at Level 10, 23 Customs Street East in the city centre. The team specialises in Google Ads, Meta campaigns, websites, search engine optimisation and digital strategy for ambitious businesses that want more customers and better leads. Its SEO work improves visibility in Google and Bing through technical SEO, local search and content matched to what customers actually search for, with transparent reporting and no vanity metrics, and it runs dedicated campaigns for Christchurch and Canterbury businesses as well as Auckland clients. Websites are built on WordPress, Shopify, Shopify Plus and SilverStripe, and paid media covers Google, Google Merchant, Microsoft, Facebook, Instagram, LinkedIn and TikTok ads plus remarketing. The agency also offers content and social marketing, Mailchimp and Klaviyo email, conversion rate optimisation and analytics. Published client results include 154 new memberships and $284k revenue for Howick Golf from a location-focused strategy, a 57 percent rise in new users for Design Builders, and a 14x return on ad spend for Wool.Life. Contact is hello@nzdigital.co.nz or 09 601 8963.

SlateSEO
SlateSEO is a Wellington-based studio focused on local SEO and conversion-ready websites for trades and service businesses across Wellington, the Hutt Valley and Porirua, including plumbers, electricians, builders, roofers and painters. Its aim is to win local search in both Google Maps and organic results, turn that visibility into enquiries, and add paid advertising only once tracking is in place and the return is clear. The work covers technical SEO such as crawl and indexation problems, page speed, schema and internal linking, fast service pages with tracking on every form and phone tap, and Google Business Profile management covering categories, services, posts and reviews, plus consistent business details across New Zealand citation sites and curated backlinks. Instead of a monthly PDF, clients get a live report link showing weekly keyword positions, site health and the work completed each month, with Google performance read from Search Console. Packages are month to month in NZD, from the Get Found plan at $249 a month through Local Launch, Growth and Scale, with optional Google Ads and Meta Ads management and one-off SEO audits. Published work includes a 112 percent lift in organic leads over 90 days for Window Maintenance, plus sites for Aroha Apothecary and Scendent Mental Health. Contact is hello@slateseo.co.nz or 021 638 205.

The Launch Agency
The Launch Agency is a Hamilton marketing agency at Level 1, 127 Collingwood Street, founded by Ben Langton-Burnell, an Olympic-level athlete who started the business as a photographer and videographer and has grown it to a team of more than 30 specialists. It combines a performance marketing team, a creative studio and commercial advisory under one roof, and says it has worked with over 200 brands across New Zealand and Australia. Its SEO service covers technical and local search: a consulting-led onboarding checks whether SEO, especially local SEO, suits the business, then the team sets up website conversion and technical SEO foundations such as on-page optimisation, meta tags and link structures, optimises the Google Business Profile and runs review-generation strategies to lift local visibility. The agency reports an average 200 percent rise in clicks from local SEO work. Alongside search it runs Meta, Google and TikTok ad campaigns, social media management, brand positioning and website design and development, with seven full-time videographers and photographers plus animators producing content. Clients quoted on the site include The Waitomo Experience, Whole Nutrition and Modern Building Solutions. Contact is hello@launchagency.co.nz or 027 274 6064.

The Marketing Studio
The Marketing Studio is a Nelson marketing consultancy established in 2004, working from Suite 2, Level 1, 244 Hardy Street and led by director and marketing consultant Chris Butler with an in-house graphic and web design team. It helps owner-operators and managers who lack the time or experience to plan their own promotion, combining marketing strategy with production across web, print, social media, radio and TV. Its search engine optimisation service covers on-page work, identifying the most important key phrases for a site, updating content and building internal links, plus off-page link building, Google Analytics setup and training on how to read the data. Conversion optimisation reviews calls to action and usability so visitors turn into enquiries, and the team also sets up and manages Google Ads and Facebook ads campaigns. Three published SEO audit packages, from a quick overview for DIY websites to a detailed e-commerce report, review websites, keywords, blogs and social visibility, and the studio can implement the recommended changes for time-poor clients. Other services include website design and build, email marketing, social media, copywriting, PR and event management. Clients include Nelson Day Surgery, Metalcraft, the Nelson Tasman Chamber of Commerce, Tile Direct Nelson and Milnes Beatson Accountants.
Traction Marketing
Traction Marketing is a Christchurch digital growth agency headquartered on Level 5, 200 High Street in Christchurch Central. It started in 2015 as Stratigence Ltd, giving Kiwi tech companies senior marketing help from a shared co-working space, rebranded as Traction Marketing in 2020 when it built an in-house team, and by its tenth year in 2025 had grown to 14 people. Co-founder and CEO Jordana Clarke brings more than 20 years in export strategy and digital marketing. Its Christchurch-based SEO team handles on-page and off-page SEO, technical SEO, local SEO for Google Maps, content optimisation and link building for local, national and international audiences, and it also offers answer engine optimisation. Paid work covers Google Ads, display, YouTube, Performance Max, Bing and LinkedIn, Facebook and Instagram advertising, with conversion rate optimisation, A/B testing and market validation alongside. Published case studies include LMA Timber, which it says lifted inbound enquiries by 86 percent through SEO and AEO, plus RedSeed, Nutrient Rescue, Millpond and Ryman Healthcare. Contact is hello@tractionmarketing.nz or 03 384 0101.

Webpress
Webpress is a performance marketing and engineering agency based at the Quad 7 Building on Leonard Isitt Drive, Auckland Airport, working with businesses across New Zealand. Director Shubham Goyal runs most accounts himself, and the agency describes itself as a small, senior team that caps client numbers so the people who pitch are the people who do the work. Its SEO service starts with a technical audit of crawling, indexing, rendering, site architecture and Core Web Vitals, then moves to entity and schema modelling, location and service page builds, content written around search intent, local SEO with Google Business Profile and citation consistency, AI answer visibility, and migration planning. Alongside search it runs Google Ads, Shopping, Performance Max and paid social, plus conversion research, A/B testing, GA4 and server-side tracking, website and app development, and AI-driven lead follow-up. Webpress is a Google Partner and Meta Blueprint certified, works on month-to-month terms, and keeps ad accounts in the client's name. Published case studies cover Quick Towing, Top Cash For Cars and Cash For Cars Now, the last reporting a 26 percent conversion rate. Contact is info@webpress.co.nz or 0800 400 294.

WebWizards
WebWizards is a Hamilton digital marketing and website optimisation agency based in Rotokauri, trading under Devine Enterprises Limited. The team has been designing, building, marketing and optimising websites since 2002 and reports more than 300 clients and 3,500 projects for businesses across New Zealand and overseas. It has been a Google Ads Partner since 2011 and also holds Google Cloud, Shopify, Squarespace and Rocketspark partnerships. SEO sits within its website optimisation service, which covers keyword-based on-site SEO, search indexing optimisation with semantic HTML, XML sitemaps, robots files and canonical links, plus web performance, user experience and conversion rate optimisation. Comprehensive website audits include technical SEO checks, content and user experience reviews, page speed testing, link checking and reviews of DNS, hosting and Google properties, delivered with a review meeting and written recommendations. WebWizards also sets up and reviews Google Business Profiles, manages Google Ads campaigns, configures Google Analytics and advanced tracking, and builds websites and Shopify stores. The agency says it cannot guarantee first-page rankings for every keyword but works to best-practice SEO standards, with transparent reporting so clients can see what is being done. Meetings are by appointment, and initial consultations are free of obligation.
What to ask a CRO agency
- Which pages or flows will you test first, and why?
- How is a test decided, run and called?
- What traffic is required before a test is worth running?
- Who implements the variant?
- How do you report a result that is inconclusive?
Other services in New Zealand
- GEO agencies in New Zealand
- Local SEO agencies in New Zealand
- Ecommerce SEO agencies in New Zealand
- Web design agencies in New Zealand
- Link building agencies in New Zealand
- PPC and Google Ads agencies in New Zealand
- Content marketing agencies in New Zealand
- Technical SEO agencies in New Zealand
- Social media agencies in New Zealand
- Shopify SEO agencies in New Zealand
- Small business SEO agencies in New Zealand
- SEO audit agencies in New Zealand