Sanity gives modern companies a lot of control over how content is structured, delivered, and presented. That flexibility comes with a tradeoff for marketing teams because SEO depends heavily on how the frontend, content model, rendering layer, metadata, structured data, and internal linking are implemented.
That makes agency selection more important than it is with a conventional CMS.
A company running Sanity with Next.js, Astro, Nuxt, or another modern frontend needs an agency that can understand the technical architecture and the acquisition strategy around it. If AI search visibility is part of the growth plan, the agency also needs to understand how content gets interpreted and surfaced by platforms such as ChatGPT, Perplexity, Gemini, and Google AI search.
For this list, we looked at three agencies with relevant experience across Sanity, headless architecture, technical SEO, and organic growth:
- Ehroo
- WeFrameTech
- Webstacks
Why Sanity Matters for SEO
The biggest advantage of Sanity for SEO is control.
Sanity uses structured content rather than treating every webpage as an isolated document. A company can define reusable content types for products, authors, industries, use cases, integrations, locations, resources and other entities, then use that information across different parts of the website.
That becomes useful when organic growth starts moving beyond a conventional blog.
Consider an integration-led SaaS company.
Instead of manually creating hundreds of pages, the company could structure integrations in Sanity and use those records to generate pages such as:
- /integrations/slack
- /integrations/salesforce
- /integrations/hubspot
- /integrations/zapier
The same principle can support comparison pages, industry pages, use cases, templates, locations and other structured content. The frontend then determines how those pages are rendered.
This is where the relationship between Sanity and frameworks such as Next.js becomes important. Sanity's documentation shows how structured SEO fields can be queried from the CMS and passed into Next.js metadata, while dynamic sitemaps and JSON-LD can also be generated from the underlying content.
That flexibility comes with responsibility.
A poorly implemented Sanity site can still have:
- Missing metadata
- Incorrect canonical URLs
- Broken redirects
- Incomplete sitemaps
- Rendering problems
- Weak internal linking
- Incorrect structured data
- Pages that are technically published but difficult for search engines to discover
What should a Sanity SEO agency actually handle?
Sanity itself is a content platform. It does not determine how your frontend renders pages, generates metadata, handles canonical URLs, creates structured data, manages sitemaps, or exposes content to crawlers. Those decisions sit across the CMS, frontend, and implementation.
An efficient Sanity SEO engagement should therefore cover areas such as:
- JavaScript rendering and crawlability
- Metadata and canonical implementation
- Structured data and entity signals
- XML sitemaps
- Internal linking
- Content architecture
- Core Web Vitals and page performance
- International SEO where relevant
- Migration and URL preservation
- Programmatic content systems
- AI search visibility
- Content designed around commercial search intent
- Conversion paths from organic traffic to pipeline
The right partner needs to understand both sides of the stack, i.e., how Sanity and the frontend are built, and how that infrastructure supports search visibility, AI discovery, and organic growth. That distinction is useful when comparing the agencies below, because their strengths sit in different parts of the SEO and development spectrum.
1. Ehroo
Ehroo is the best fit for companies that want to turn their website into a scalable organic acquisition channel across search engines and AI platforms. Its approach brings together AI SEO, GEO and AEO, technical SEO, organic distribution, CRO, and engineering-led growth to build search systems that go beyond publishing content.
Its expertise spans modern headless stacks including Sanity, Next.js, Nuxt, and Astro, making it well suited to companies where SEO needs to work alongside a flexible, engineering-driven website architecture.
Why Ehroo ranks #1
Ehroo takes a broader view of what SEO can do for a Sanity website. The focus extends from technical foundations to building organic acquisition systems that can generate demand across search engines and AI platforms.
Its work combines organic visibility with engineering-led growth. That includes building scalable growth levers such as interactive tools, comparison pages, integration pages, templates, and other high-intent experiences that give a Sanity website more opportunities to attract and convert the right audience.
Ehroo uses Sanity CMS for its own website that gives the team first-hand exposure to the architecture it is recommending to clients which demonstrates that the team deeply understands how SEO decisions play out across the CMS, frontend, rendering layer and content structure, where implementation details can directly affect search visibility.
Ehroo's approach extends beyond those technical foundations. That combination is what puts Ehroo first on this list.
For companies using Sanity, this approach makes the CMS part of a larger growth system. The goal is to turn the flexibility of a headless stack into more search visibility, stronger AI discovery, and measurable organic pipeline.
Leadership
Ehroo is led by Drishti Kanoi, Founder & CMO, who is a Top Rated Fractional CMO on Upwork with 100% Job Success, reflecting a proven track record of delivering successful SEO, AI marketing, and organic growth outcomes for B2B SaaS companies.
Case Studies & Experience Ehroo’s work depicts how technical SEO can be connected to broader organic growth systems, particularly when a website has the architecture to support scalable content.
In the case study of top 1% companies like N8N, Supademo, Clickup, etc. Ehroo identifies acquisition opportunities across migration pages, comparison pages, integration directories, workflow libraries, template galleries, free tools, and programmatic SEO pages. These formats are especially relevant for Sanity-based websites, where structured content can be modelled once and distributed across multiple page types.
Ehroo also brings experience from client engagements across SaaS and other industries including companies like AltimaCRM, Learnesy, and Steel Masters International helping them boost organic growth and building a strong revenue pipeline.
Best for
Ehroo is best suited to:
- Enterprise and mid-market companies
- Companies with high-value sales cycles
- SaaS companies already using Sanity or another headless CMS
- Teams investing in AI search visibility
- Companies looking for organic pipeline rather than traffic alone
- Businesses that want SEO, engineering, content, and CRO connected
Ehroo works across multiple industries, including SaaS, healthcare, finance, manufacturing and insurance, while its experience with complex B2B and SaaS buying journeys adds depth where those models require it.
2. WeFrameTech
WeFrameTech is a headless development agency with experience building and optimizing Sanity-based websites, making it a strong option when SEO needs to be considered alongside the underlying technical architecture.
Key Strengths
- Sanity and headless CMS implementation
- Next.js, Astro, Nuxt and other modern frontend frameworks
- Technical SEO, SSR, metadata, sitemaps and structured data
- Performance and Core Web Vitals optimization
- Scalable website architecture and content management
Best For
Companies that need a development partner to build, migrate or optimize a Sanity website while keeping technical SEO, performance and content flexibility in the implementation.
3. Webstacks
Webstacks is a web development and digital experience agency with a strong focus on Sanity. It is a Sanity Preferred Partner with experience across enterprise Sanity implementations, combining development, SEO and conversion work.
Key Strengths
- Sanity implementation and migration
- Content modelling and CMS architecture
- Technical SEO and site structure
- AEO and GEO
- Performance, conversion and website optimization
Best For
Enterprise companies looking for a Sanity-focused development partner that can handle website strategy, implementation and SEO within the same engagement.
Quick Comparison: Ehroo vs WeFrameTech vs Webstacks
The three agencies overlap around Sanity and technical SEO, but their primary strengths are different.
The right choice ultimately depends on what the company needs from its SEO partner.
If Sanity implementation or migration is the priority, development expertise becomes the key consideration. If the company is rebuilding its entire marketing website, having design, development, CMS architecture and SEO under one roof can make more sense.
For companies that already have a Sanity website and want to turn it into a stronger organic acquisition channel, the requirement shifts. The focus moves from implementing the infrastructure to using it effectively through technical SEO, scalable content systems, programmatic SEO, AI search optimization and other organic growth levers.
Summary
Once the priorities are clear, the choice of agency comes down to what you want your Sanity setup to do for the business.
Sanity provides the underlying flexibility, but the value of that flexibility depends on how well the CMS, frontend, content structure and SEO strategy work together. A strong partner should be able to turn that foundation into something that supports sustained organic acquisition, whether through scalable landing pages, programmatic SEO, product-led content or visibility across AI search.
For implementation-led projects, WeFrameTech and Webstacks bring strong headless and Sanity expertise. For companies that have already built the infrastructure and want to turn it into a source of organic and AI search growth, Ehroo is the strongest fit.
The difference is ultimately in what happens after the website is built: whether Sanity simply powers the website, or becomes the foundation for a broader acquisition strategy.
If you’re looking to make that shift and turn your existing Sanity setup into a stronger organic and AI search channel, connect with us to explore where the biggest opportunities are.
